JP6923132B2 - Perforated navigation device - Google Patents

Description

The present invention relates to a perforation navigation device that supports tunnel construction work.

Conventionally, there is disclosed a perforation navigation device that supports a tunnel construction work, which is performed by using a perforation device provided with a boom provided on a mobile carriage and a perforator provided on the boom (for example, Patent Document). 1).
In the perforation navigation device described in Patent Document 1, in the tunnel construction using the blasting method, the perforation of the charge hole is based on various information such as the position of the face in the tunnel extension direction, the position of the moving carriage, the posture and the orientation. The position is calculated and the calculated position of the charge hole is displayed.

JP-A-2015-230189

By the way, in tunnel construction using the blasting method, surveying and recording the empty wall inside the tunnel after blasting is important information that can be used to judge the success or failure of blasting and to improve the blasting plan in the future. be. On the other hand, in the perforation navigation device described in Patent Document 1, although the perforation position of the charge hole can be calculated, there is a problem that the position of the empty wall in the tunnel after blasting cannot be calculated.
On the other hand, in general, the empty wall inside the tunnel immediately after blasting tends to collapse, so early closure is required. Therefore, there is a problem that it is difficult for a person to survey the tunnel interior air wall in order to prevent a person from entering the vicinity of the face, in addition to not having sufficient time to survey the tunnel interior air wall. In addition, it is desirable to record the information on the inner space cross section after concrete spraying, as it will be important information in the subsequent lining work. However, it was difficult to actually do it because it takes time to survey them.

Therefore, the present invention has been made by paying attention to such a problem, and provides a perforation navigation device capable of safely acquiring the position information of the empty wall surface in the tunnel immediately after blasting or after spraying concrete. Make it an issue.

In order to solve the above problems, the perforation navigation device according to one aspect of the present invention includes a boom provided in a mobile carriage and a perforator provided in the boom and capable of perforating a lock bolt hole. It is a drilling navigation device that supports tunnel construction work performed using the device, and among the drilling information acquired when drilling a lock bolt hole for a tunnel closure, the drilling position coordinates and the unit volume at those coordinates. Calculated by the inner empty wall position calculation unit that calculates the estimated cross-sectional information of the inner empty wall surface of the tunnel immediately after rupture or after spraying concrete, and the inner empty wall position calculation unit, based on the drilling energy value used to crush the tunnel. It is characterized by including a display execution unit for displaying an image of the estimated cross section on a monitor from the estimated estimated cross section information.

According to the drilling navigation device according to one aspect of the present invention, the estimated cross-sectional information of the empty wall surface in the tunnel immediately after blasting or after spraying concrete is based on the drilling information acquired at the time of drilling each lock bolt hole for the closed portion of the tunnel. Is calculated, and the image of the estimated cross section is displayed on the monitor from the calculated estimated cross section information. Can be assisted.

As described above, according to the present invention, it is possible to safely acquire the position information of the empty wall surface in the tunnel immediately after blasting or after spraying concrete, and use this to support the construction work of the tunnel.

It is a conceptual diagram which shows the schematic structure of one Embodiment of the perforation navigation device which concerns on one aspect of this invention. It is a front view which shows the display example of the monitor of the perforation navigation device which concerns on one aspect of this invention. It is a conceptual diagram which shows the image of drilling a lock bolt hole with a drilling device. It is an enlarged view of the part A of FIG. 3, and is the figure explaining the relationship between the drilling start position of the lock bolt hole with respect to the closing part, and the cross section of the empty wall in the tunnel immediately after blasting. It is a conceptual diagram which shows an example of the cross section of the empty wall in a tunnel immediately after blasting. It is a conceptual diagram which shows the example of the cross section of the tunnel after the empty wall in the tunnel immediately after blasting is closed by concrete spraying and construction of support work. It is a figure for showing the cross section and the planned cross section of the empty wall in the tunnel immediately after blasting, and for explaining the definition of "excavation". It is a conceptual diagram which shows an example of the cross section of the tunnel which is drilling a lock bolt hole. It is a conceptual diagram which shows an example of the cross section of a tunnel after drilling a lock bolt hole. It is a conceptual diagram which shows an example of the cross section of the tunnel where the lock bolt was constructed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate. The perforation navigation device according to the present embodiment is a device for supporting the construction work of the tunnel. This is a suitable example for the construction work of a tunnel that is closed by construction.
The drawings are schematic. Therefore, it should be noted that the relationship, ratio, etc. between the thickness and the plane dimension are different from the actual ones, and there are parts where the relationship and ratio of the dimensions are different between the drawings. Further, the embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention describes the material, shape, structure, and arrangement of constituent parts. Etc. are not specified in the following embodiments.

As shown in FIG. 1, the drilling navigation device 1 of the present embodiment is a work vehicle such as a drill jumbo for drilling a lock bolt hole with respect to a closing portion H of the peripheral wall surface of the face K (hereinafter, “drilling device”). 4 ”). The drilling device 4 includes a mobile carriage 5, a boom 6 provided on the mobile carriage 5 and having a plurality of movable portions (described later), and a guide cell 8 provided on the boom 6 on which the drilling machine 7 is mounted.
The boom 6 includes a boom swing 9 that swings the boom 6 in the horizontal direction (hereinafter, also referred to as a “first movable portion 9”) and a boom slide 10 that moves the boom 6 back and forth (hereinafter, “second movable portion 9”). The movable portion 10 ”), the guide swing 11 that swings the guide cell 8 in the horizontal direction (hereinafter, also referred to as the“ third movable portion 11 ”), and the guide tilt that swings the guide cell 8 in the vertical direction. It has a 12 (hereinafter, also referred to as a “fourth movable portion 12”) and a guide slide 13 (hereinafter, also referred to as a “fifth movable portion 13”) that moves the guide cell 8 back and forth.

Each of the first to fifth movable portions 9 to 13 is driven by the oil supply supplied from the hydraulic pump 18 driven by the electric motor 19 described later. As a result, the boom 6 is configured so that the position and orientation of the drilling machine 7 can be changed according to the operation of the operator of the drilling device 4.
The drilling machine 7 has a drilling rod 14 provided with a drilling bit at the tip end portion, and a drifter 15 that gives a blow to the rear end portion of the drilling rod 14. The puncher 7 is provided with a feeder 16 that moves the puncher 7 forward and backward (that is, in the rod axial direction). As a result, the drilling machine 7 applies a striking force to the rear end portion of the drilling rod 14 by the drifter 15 in response to the operator's operation, and moves forward to the closing portion H of the peripheral wall surface of the face K. The lock bolt hole L can be drilled.

As a result, the operator operates the drilling device 4, presses the tip of the drilling rod 14 against the closing portion H of the peripheral wall surface of the face K, gives a blow to the rear end of the drilling rod 14, and causes the drilling machine 7. By repeating the operation of moving in the forward direction, it is possible to drill a plurality of lock bolt holes L in the closing portion H.
Further, the drilling device 4 has a motor start switch 17 and a hydraulic pump 18. The motor start switch 17 is a switch pressed by the operator when the hydraulic pump 18 is started (that is, when the first to fifth movable portions 9 to 13 are started to be driven). When pressed by the operator, the motor start switch 17 outputs a signal for starting the hydraulic pump 18 (hereinafter, also referred to as a “start signal”) to the electric motor 19 and the controller 3 (described later).

The hydraulic pump 18 is a pump driven by an electric motor 19 to supply oil to the drifter 15 and feeder 16 of the drilling machine 7, and the hydraulic cylinders and the like provided in the first to fifth movable portions 9 to 13. .. The electric motor 19 starts driving the hydraulic pump 18 when a start signal is output from the motor start switch 17, and ends driving the hydraulic pump 18 when a stop signal (described later) is output from the controller 3.
Further, the perforation navigation device 1 of the present embodiment includes relative information acquisition units 20 to 24, a start operation detection unit 25, a perforation information storage unit 26, a monitor 2, and a controller 3. The relative information acquisition units 20 to 24 acquire information on the bit position (that is, the relative position of the bit), the posture, and the orientation of the punch 7 with respect to the moving carriage 5 (hereinafter, also referred to as “relative information”). Then, the relative information acquisition units 20 to 24 output the acquired relative information to the controller 3.

For example, the relative information acquisition unit 20 (hereinafter, also referred to as “horizontal angle detection unit 20”) is arranged in the first movable unit 9, detects the horizontal swing angle of the boom 6, and detects the detection result. Output to controller 3. Further, the relative information acquisition unit 21 (hereinafter, also referred to as “horizontal angle detection unit 21”) is arranged in the third movable unit 11 to detect the horizontal swing angle of the guide cell 8 and its detection result. Is output to the controller 3.
Further, the relative information acquisition unit 22 (hereinafter, also referred to as “vertical angle detection unit 22”) is arranged in the fourth movable unit 12 to detect the swing angle of the guide cell 8 in the vertical direction, and the detection result thereof. Is output to the controller 3. Further, the relative information acquisition unit 23 (hereinafter, also referred to as “advance / retreat amount detection unit 23”) is arranged in the second movable unit 10 to detect the amount of advance / retreat of the boom 6 in the front-rear direction, and the detection result is used as a controller. Output to 3. Further, the relative information acquisition unit 24 (hereinafter, also referred to as “advance / retreat amount detection unit 24”) is arranged in the feeder 16 to detect the amount of advance / retreat of the guide cell 8 in the front-rear direction, and outputs the detection result to the controller 3. do.

The drilling information storage unit 26 stores the drilling position and the drilling energy value of the lock bolt hole L drilled during the drilling operation.
As the drilling position of the lock bolt hole L with respect to the closing portion H, for example, the coordinate data of the drilling position of the lock bolt hole L can be used. Further, as the drilling energy value, for example, the detection data of the oil pressure supplied to the drifter 15 at the time of drilling the lock bolt hole L can be used. The monitor 2 is arranged at a position visible to the operator, and is used to support the drilling operation of the charging hole to be drilled into the mirror of the face, as shown in the image generated by the controller 3 (for example, as shown in FIG. 2). Image) is displayed.

The controller 3 is a microcomputer connected to the motor start switch 17, the horizontal angle detection units 20, 21, the vertical angle detection unit 22, the advance / retreat amount detection units 23, 24, the start operation detection unit 25, the drilling information storage unit 26, and the monitor 2. Is. The controller 3 logically includes hardware resources such as a hydraulic pressure detection unit 30, an information acquisition unit 31, a drilling information calculation unit 32, a display execution unit 34, a storage execution unit 35, and a stop unit 36.
In the example shown in FIG. 1, the oil pressure detection unit 30, the information acquisition unit 31, the drilling information calculation unit 32, the display execution unit 34, the storage execution unit 35, the stop unit 36, the inner empty wall position calculation unit 33, and the like are logical. It is a formal representation of hardware resources that focus on functionality. That is, the expression in FIG. 1 does not necessarily mean a functional block that independently exists as a physical region on the semiconductor chip.

The oil pressure detection unit 30 starts the feeder 16 of the drilling machine 7 and the hydraulic pump 18 for driving the first to fifth movable parts 9 to 13 of the boom 6, and the hydraulic pressure supplied to the feeder 16 at any time. Is detected, and the detection result is output to the information acquisition unit 31. As a method of detecting the start operation of the hydraulic pump 18, for example, a method of determining whether or not a start signal is output from the motor start switch 17 can be used. Further, for example, a configuration can be adopted in which the start operation of the first to fifth movable parts 9 to 13 of the boom 6, the drifter 15 of the drilling machine 7, and the hydraulic pump 18 for driving the feeder 16 is detected.

When the oil pressure detection unit 30 detects the start operation of the hydraulic pump 18, the information acquisition unit 31 transmits information on the position of the face K in the tunnel extension direction and information on the position, attitude, and orientation of the moving carriage 5. A signal (hereinafter, also referred to as a “transmission request signal”) is transmitted to the tunnel comprehensive survey system 40. Hereinafter, this information is also referred to as "calculation information".
As the position of the face K, for example, the tunnel progress length from the tunnel starting point (0 [m]) can be used. Further, as the position of the drilling device 4, for example, the coordinate data of the drilling device 4 can be used. Transmission of signals and the like between the information acquisition unit 31 and the tunnel comprehensive surveying system 40 is performed using, for example, wireless communication via a wireless LAN (Local Area Network).

Here, the comprehensive tunnel surveying system 40 causes the total station 41 installed in the tunnel mine and the total station 41 to measure the calculation information when the transmission request signal is transmitted from the information acquisition unit 31, and the measured calculation information. It has an arithmetic control unit 42 that transmits the information to the controller 3 (information acquisition unit 31). As the comprehensive surveying system 40 for tunnels, for example, the one disclosed in Japanese Patent No. 3418682 can be used.
The perforation information calculation unit 32 acquires the calculation information acquired by the information acquisition unit 31 and the detection results of the horizontal angle detection units 20 and 21, the vertical angle detection unit 22 and the advance / retreat amount detection units 23 and 24 (that is, relative information acquisition). Based on the relative information acquired in the parts 20 to 24), the information of the drilling position coordinates of the lock bolt hole L with respect to the closing part H is calculated. Further, the drilling information calculation unit 32 acquires the occasional oil pressure data supplied to the drifter 15 detected by the oil pressure detection unit 30, and supplies the information of the drilling position coordinates at any time and the drifter 15 at that time. It is linked with the oil pressure data to obtain drilling information.

Here, the occasional hydraulic data supplied to the drifter 15 corresponds to the drilling energy value used to crush the unit volume at that time. Therefore, the drilling energy value used to crush the unit volume at the drilling position coordinates by associating and storing the information of the drilling position coordinates at any time and the hydraulic data supplied to the drifter 15 at that time. I understand.
Then, the drilling information calculation unit 32 outputs the calculated drilling information of the lock bolt hole L to the display execution unit 34. The display execution unit 34 causes the monitor 2 to display the drilling position of the lock bolt hole L based on the drilling information of the lock bolt hole L calculated by the drilling information calculation unit 32, as shown in FIG.

In the display example shown in FIG. 2, the estimated cross section G of the inner empty wall S of the tunnel and the plan, which are generated by the inner empty wall position calculation process described later and calculated from the drilling results of the plurality of lock bolt holes L for the closing portion H. This is an example in which the cross section P and the cross section P are superimposed and displayed in a comparable manner, and at the same time, the perforation pattern of the charge hole to be perforated with respect to the mirror of the face is superimposed and displayed. In the figure, the position of the opening of the charge hole is represented by a square figure “□”, and the direction of the charge hole is represented by a straight line extending from the figure “□”.
Further, by monitoring the drilling energy value, it is naturally possible to obtain the position of the empty wall surface in the tunnel (that is, the surface of the closing portion H) after the concrete is sprayed. Therefore, in the present embodiment, the inside sky cross-section information after concrete spraying is also acquired, and the display execution unit 34 uses the inside sky cross-section information after concrete spraying on the monitor 2 as a single motion or the above tunnel inner sky wall S. The estimated cross section G and the planned cross section P can be superposed and displayed in a comparable manner (see, for example, FIG. 6).

The storage execution unit 35 stores the drilling information of the lock bolt hole L calculated by the drilling information calculation unit 32 in the drilling information storage unit 26. The drilling information stored in the drilling information storage unit 26 is used not only for calculating the estimated cross-section G of the tunnel inner wall surface S immediately after blasting and for calculating the inner-sky cross-section information after concrete spraying, but also for analyzing the drilling result.
The inner air wall position calculation unit 33 executes the inner air wall position calculation process, and estimates the surfaces of the tunnel inner air wall S and the closing portion H after blasting from the recording of the drilling result of the lock bolt hole L, and the cross section G and the closing portion G. It is calculated as the surface position information of the part H. Here, in the present embodiment, an example in which a support is provided to the closed portion H is shown, but the present invention is not limited to this, and the present invention is also applied to a tunnel in which a support is not provided to the closed portion H. can.

For details, in order to prevent the inner wall of the tunnel from collapsing in the cross section of the tunnel where the support work enters, a certain thickness of spray concrete is constructed and the support work is built, and then the secondary spray concrete is applied to the surface of the support work. It is common to construct and close the digging part. Therefore, after spraying the secondary concrete, the shape of the inner air wall after blasting cannot be visually confirmed.
On the other hand, as described above, according to the perforation device 4 equipped with the perforation navigation device 1 of the present embodiment, when the lock bolt hole L is perforated, the coordinates of the perforation start position and the unit volume at the coordinates are used. Since the drilling information of the lock bolt hole L such as the drilling energy value used for crushing is recorded in the drilling information storage unit 26 of the system, its coordinates and the drilling energy value at that time can be easily confirmed. Can be done.

That is, since the navigation system of the present embodiment always records the coordinates of the bits and the drilling energy by associating them with each other, if the change point at which the drilling energy value is considered to have changed from concrete to rock is known, the concrete is naturally used. And the coordinates of the boundary point of the bedrock will also be known.
Here, the drilling energy required to crush the sprayed concrete is almost constant. Therefore, in the inner sky wall position calculation process of the present embodiment, the inner sky wall coordinates (Y2, Z2) are determined by the process of estimating that the coordinates of the change point of the drilling energy are the positions of the inner sky wall.

That is, in the inner air wall position calculation process of the present embodiment, the inner air wall position calculation unit 33 creates each lock bolt hole L at all the perforation positions of the plurality of lock bolt holes L radially perforated in the circumferential direction. Monitor changes in drilling energy values acquired during drilling.
Then, the position coordinates in each lock bolt hole L when the change of the drilling energy value exceeds a predetermined value are determined to be the position coordinates reaching the cross section after blasting, which is the empty wall surface in the tunnel immediately after blasting. Further, by fastening the position coordinates of the determined lock bolt holes L with each other by a straight line or a curved line by a regression spline or the like, estimated cross-sectional information that approximates the empty wall surface in the tunnel immediately after blasting is acquired. The same applies to the drilling start point, and the surface position information of the closing portion H, that is, the interior cross-section information after concrete spraying is acquired from the position information when the drilling energy value suddenly rises from a state of almost no load. can. Therefore, it is possible to acquire the inner space cross-section information (estimated cross-section information) simply by touching the inner air wall with the guide shell without performing the drilling work.

In addition, various criteria can be set as "predetermined" of "when the change of the drilling energy value exceeds a predetermined value". For example, the rate of change of the drilling energy value can be monitored, and the time when the rate of change exceeds a predetermined rate can be used as a judgment criterion. Further, for example, the amount of change in the drilling energy value can be monitored, and the time when the amount of change exceeds a predetermined amount can be used as a determination criterion. Further, for example, a threshold value of the drilling energy value can be set, and the time when a predetermined threshold value is exceeded can be used as a determination criterion.
The inner air wall position calculation unit 33 of the present embodiment estimates the inner air wall surface S of the tunnel immediately after blasting based on the perforation information when perforating each lock bolt hole L in the closing portion H according to this processing procedure. The cross-sectional information and the surface position information of the closing portion H are calculated. Then, as shown in FIG. 2, the display execution unit 34 causes the monitor to display an image of the estimated cross section G from the estimated cross section information calculated by the inner empty wall position calculation unit 33. In the example shown in the figure, as described above, the image of the estimated cross section G, the image of the planned cross section P, and the perforation pattern of the charge hole to be perforated from the mirror of the face are superimposed and displayed. In addition, the surface position information of the closing portion H can also be displayed.

(motion)
Next, the operation and operation / effect of the perforation navigation device 1 according to the present embodiment will be described.
By the way, in the construction work of the tunnel, first, a charge hole is made in the ground, an explosive is charged into the charge hole to blast it, and then the displacement is performed. As a result, as shown in FIG. 5, an empty wall surface S in the tunnel immediately after blasting is formed around the unclosed portion of the face. Then, as shown in FIG. 6, the blasted tunnel inner wall S is quickly sprayed with concrete and the support M is built, and the tunnel inner wall S becomes the closing portion H. Closed by.

Here, as shown in FIG. 7, an extra digging (a concave portion with respect to the planned cross section P) may occur in the tunnel inner empty wall surface S formed by blasting with respect to the planned cross section P of the tunnel. It is extremely important to control the amount of excess digging within a predetermined range in order to improve the construction quality of blasting. On the other hand, as described above, since the empty wall surface S in the tunnel immediately after blasting is liable to collapse, closure is required at an early stage. Therefore, it is difficult for a person to survey the inside of the tunnel in order to prevent a person from entering the vicinity of the face, in addition to not having sufficient time to survey the inside of the tunnel.

On the other hand, in the present embodiment, the controller 3 always automatically executes the inner empty wall position calculation process together with the acquisition process of the drilling information of the lock bolt hole L, whereby the blasting that has been difficult to acquire until now is performed. It is possible to safely acquire the shape information of the empty wall surface S in the tunnel immediately after, and by displaying the result on the monitor 2, it is possible to carry out more precise blasting work than ever before.
Specifically, in the present embodiment, when the lock bolt hole L is drilled in the closing portion H, the operator activates the motor in order to drive the first to fifth movable portions 9 to 13 of the boom 6. Press the switch 17. As a result, the motor start switch 17 outputs a start signal to the electric motor 19 and the controller 3. When the start signal is output, the electric motor 19 starts driving the hydraulic pump 18.

As a result, the drifter 15 and the feeder 16 of the drilling machine 7 and the first to fifth movable parts 9 to 13 of the boom 6 can be driven. Then, the controller 3 transmits the information acquisition signal to the arithmetic control unit 42 of the comprehensive tunnel surveying system 40. When the information acquisition signal is transmitted, the calculation control unit 42 causes the total station 41 to measure calculation information such as the position of the mobile carriage 5, and transmits the measured calculation information to the controller 3.
When the calculation information is transmitted, the controller 3 acquires the transmitted calculation information, and the acquired calculation information, horizontal angle detection units 20, 21, vertical angle detection units 22, and advance / retreat amount detection units 23, 24. Based on each detection result of the above and the detection result of the hydraulic pressure by the hydraulic pressure detection unit 30, the drilling position of the lock bolt hole L with respect to the closing portion H and the drilling used to crush the unit volume at that coordinate at that time. Calculate the energy value.

As a result, the controller 3 has the coordinates of the drilling position of each lock bolt hole L to be drilled radially in the circumferential direction of the tunnel inner air wall S and the drilling energy used at that time, as shown in the image in the middle of drilling in FIG. Can be obtained as drilling information. Then, as shown in FIG. 2, the controller 3 displays the calculated drilling position of the lock bolt hole L on the monitor 2, and stores the drilling information in the drilling information storage unit 26. As a result, the image of the monitor 2 can be visually recognized by the operator, and the drilling work of the lock bolt hole L can be supported.
Further, in the controller 3 of the present embodiment, the inner empty wall position calculation unit 33 executes the above-mentioned inner empty wall position calculation process at all the positions where the lock bolt holes L are drilled, and reaches the cross section after rupture. It is possible to acquire approximate inner sky wall information by concluding the obtained position coordinates (Y2, Z2) with a straight line or a curved line.

That is, as shown in FIG. 9, when all the predetermined lock bolt holes L are drilled, the controller 3 of the present embodiment records the drilling result of each lock bolt hole L and records the drilling result of the tunnel inner wall S after blasting. By finding the position coordinates (Y2, Z2) of the point that intersects with and concluding the obtained position coordinates with a straight line or a curve such as a regression spline, it is estimated to approximate the empty wall surface S in the tunnel immediately after blasting. Cross section information can be obtained safely.
Then, as shown in FIG. 2, the controller 3 superimposes and displays the estimated cross section G of the tunnel inner wall S and the planned cross section P in a comparable manner, and at the same time, the charge for drilling the mirror of the face from now on. The perforation pattern of the holes can be superimposed and displayed. As a result, it is possible to safely acquire the shape information of the inner air wall, which has been difficult to acquire until now, and by displaying the result on the monitor 2, it is possible to carry out more precise blasting work than ever before.

Further, according to the perforation navigation device 1 according to the present embodiment, in addition to acquiring the estimated cross-sectional information of the empty wall surface (the surface corresponding to the reference numerals S and H) in the tunnel immediately after blasting and after spraying concrete, a predetermined lock bolt hole is obtained. After the drilling of L, as shown in FIG. 10, the lock bolt LB is driven into each lock bolt hole L. It is also possible to superimpose and display the position of. Therefore, according to the perforation navigation device 1 according to the present embodiment, it is extremely excellent in supporting the construction work of the tunnel more comprehensively.

For example, according to the drilling navigation device 1 according to the present embodiment, the drilling cross section can be grasped based on the estimated cross section information of the empty wall surface S in the tunnel immediately after blasting. Therefore, it is possible to grasp the over-digging more accurately and correct the drilling position and angle at the next blasting to reduce the over-digging. In addition, where the result of lining concrete is affected by the unevenness before lining, the over-digging is grasped more accurately (that is, the shape before lining is grasped more accurately), thereby in the previous process. The problem can be improved in the same process next time, and the unevenness on the back surface of the lining can be reduced. Therefore, it has an excellent effect that the lining thickness can be made uniform and restraint cracks can be prevented or suppressed.

Further, according to the perforation navigation device 1 according to the present embodiment, for example, "estimated cross-sectional information of the tunnel inner wall surface (the surface corresponding to the closing portion H) after concrete spraying" and "the tunnel inner air wall surface S immediately after blasting". Since the shape and thickness of the sprayed cross section can be grasped from the "estimated cross-section information", it is possible to estimate the amount of lining concrete and check whether the support work installation and the spray installation are correct. In addition, it is possible to check whether or not the waterproof sheet conforms to the installation standard due to the unevenness of the spray surface. Furthermore, as a measuring engineer, it is possible to grasp the deformation of the entire circumference of the tunnel.

Further, according to the perforation navigation device 1 according to the present embodiment, since the shape and thickness of the sprayed cross section can be grasped, it can be confirmed whether or not the sprayed all-around winding thickness can be secured. In addition, by estimating the spray amount from the spray thickness, the residual spray rate and the rebound rate can be calculated more accurately, and it can be used as a material for changing the spray composition.
That is, not all of the sprayed concrete adheres to the closed portion, and a part of the sprayed concrete falls. This is called "rebound", and "rebound" is a so-called material loss. Here, the ratio of the total amount of discharged concrete to the rebound is called the "rebound rate", and the rebound rate is usually an estimated value.

On the other hand, according to the perforated navigation device 1 according to the present embodiment, the total amount of concrete is known, and further, the shape of the empty wall surface in the tunnel after the concrete is sprayed and the empty wall surface in the tunnel before the spraying (that is, blasting). Since the amount of concrete adhering to the closed portion can be known from the difference from the shape of the empty wall surface S) in the tunnel immediately after, it has an excellent effect that the rebound rate can be obtained more accurately.
As described above, the drilling navigation device 1 according to the present embodiment has an empty wall surface (S) in the tunnel immediately after blasting and after spraying concrete, based on the drilling information when drilling the lock bolt hole L in the closed portion. And H), at least one of the estimated cross-section information is calculated, and an image such as the estimated cross-section G is displayed on the monitor 2 from the calculated estimated cross-section information, so that the position information of the empty wall surface S in the tunnel immediately after blasting can be safely acquired. can.

It should be noted that the perforation navigation device according to the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.
For example, in the perforation navigation device 1 according to the above embodiment, the inner air wall position calculation unit 33 shows an example in which the inner air wall position calculation process is always automatically executed together with the acquisition process of the perforation information of the lock bolt hole L. However, the present invention is not limited to this, and the inner empty wall position calculation process may be executed independently of the acquisition process of the drilling information of the lock bolt hole L. For example, it can be executed when the operator inputs an execution instruction.

Further, for example, in the perforation navigation device 1 according to the above embodiment, the perforation information calculation unit 32 has the calculation information acquired by the information acquisition unit 31, the relative information acquired by the relative information acquisition units 20 to 24, and the oil pressure detection unit. An example of calculating the drilling position of the lock bolt hole L and the drilling energy value associated with the drilling position based on the detection result of the oil pressure by 30 is shown, but other configurations may be applied.
Further, for example, if the drilling operation is started by the drilling device 4 before the drilling information calculation unit 32 completes the acquisition of the calculation information by the information acquisition unit 31, the information acquisition unit 31 has acquired the calculation information in the past. The drilling position of the lock bolt hole L may be calculated based on the information (for example, the calculation information acquired last time) and the relative information.

In this case, the drilling information storage unit 26 stores the drilling position (hereinafter, also referred to as “temporary calculation position”) of the lock bolt hole L calculated by the storage execution unit 35 based on the calculation information acquired in the past. In this case, after the information acquisition unit 31 completes the acquisition of the calculation information, the temporary calculation position stored in the perforation information storage unit 26 is corrected based on the calculation information for which the acquisition has been completed.
As a result, according to the perforation navigation device 1 according to the present modification, the perforation work is started before, for example, the surveying of the position of the moving carriage 5 by the total station 41 is completed, that is, before the acquisition of the calculation information is completed. Even if the drilling information storage unit 26 stores the uncertain drilling position of the lock bolt hole L, the accuracy of the drilling position of the lock bolt hole L stored in the drilling information storage unit 26 can be improved.

Further, the perforation navigation device 1 according to the above embodiment includes horizontal angle detection units 20 and 21, vertical angle detection units 22, and advance / retreat amount detection units 23 and 24, and detection results (relative information) of these detection units 20 to 24. ) And the calculation information, an example of calculating the drilling position of the lock bolt hole L has been shown, but the present invention is not limited to this, and other configurations may be adopted. For example, instead of the detection units 20 to 24, sensors for detecting the operating states of the first to fifth movable units 9 to 13 and the feeder 16 are provided, and based on the detection results of these sensors and the information for calculation, The drilling position of the lock bolt hole L may be calculated.

1 ... Drilling navigation device 2 ... Monitor 3 ... Controller 4 ... Drilling device 5 ... Moving trolley 6 ... Boom 7 ... Drilling machine 8 ... Guide cell 9 ... First moving part (boom swing)
10 ... Second movable part (boom slide)
11 ... Third moving part (guide swing)
12 ... Fourth moving part (guide tilt)
13 ... Fifth movable part (guide slide)
14 ... Drilling rod 15 ... Drifter 16 ... Feeder 17 ... Motor start switch 18 ... Hydraulic pump 19 ... Electric motor 20 ... Horizontal angle detection unit (relative information acquisition unit)
21 ... Horizontal angle detection unit (relative information acquisition unit)
22 ... Vertical angle detection unit (relative information acquisition unit)
23 ... Advance / retreat amount detection unit (relative information acquisition unit)
24 ... Advance / retreat amount detection unit (relative information acquisition unit)
25 ... Start operation detection unit 26 ... Drilling information storage unit 30 ... Hydraulic detection unit 31 ... Information acquisition unit 32 ... Drilling information calculation unit 33 ... Inner empty wall position calculation unit 34 ... Display execution unit 35 ... Storage execution unit 36 ... Stop unit 40 ... Comprehensive surveying system for tunnels 41 ... Total station 42 ... Arithmetic control unit K ... Face L ... Lock bolt hole LB ... Lock bolt Ls ... Lock bolt hole blasting start position Le ... Lock bolt hole blasting end position M ... Support work S … Cross section after blasting (empty wall surface in the tunnel immediately after blasting)
H ... Closed part (empty wall surface inside the tunnel after spraying concrete)
P ... Planned cross section G ... Estimated cross section

Claims (5)

A drilling navigation device that supports tunnel construction work, which is performed using a drilling device provided with a boom provided on a mobile carriage and a drilling machine provided on the boom that can drill a lock bolt hole. ,
Immediately after blasting or after concrete spraying, based on the drilling position coordinates and the drilling energy value used to crush the unit volume at those coordinates, among the drilling information acquired when drilling the lock bolt hole for the tunnel closure. The inner sky wall position calculation unit that calculates the estimated cross-sectional information of the inner sky wall of the tunnel,
A perforation navigation device including a display execution unit that displays an image of the estimated cross section on a monitor from the estimated cross section information calculated by the inner empty wall position calculation unit. The perforation navigation device according to claim 1, wherein the display execution unit displays an image of the estimated cross section on a monitor and superimposes and displays an image of a perforation pattern of a charge hole to be perforated on a mirror of a face. .. The inner empty wall position calculation unit monitors changes in the drilling energy value acquired at the time of drilling each lock bolt hole at all drilling positions of a plurality of lock bolt holes radially drilled in the circumferential direction, and drills the lock bolt holes. The drilling position coordinates in each lock bolt hole when the change in energy value exceeds a predetermined value are determined to be the position coordinates reaching the empty wall surface in the tunnel immediately after rupture or after spraying concrete, and each determined lock bolt is determined. The perforation navigation device according to claim 1 or 2, wherein the position coordinates in the hole are fastened to each other with a straight line or a curved line to acquire estimated cross-sectional information that is close to the empty wall surface in the tunnel immediately after rupture or after spraying concrete. Further provided with a drilling information calculation unit that calculates the drilling energy value used for crushing the drilling position coordinates of the rock bolt hole drilled during the tunnel closing operation and the unit volume at those coordinates as drilling information.
The claim that the inner empty wall position calculation unit calculates the estimated cross-sectional information of the empty wall surface in the tunnel immediately after blasting or after concrete spraying based on the drilling information of each lock bolt hole calculated by the drilling information calculation unit. The perforation navigation device according to any one of 1 to 3. A reference information acquisition unit that acquires information on the position of the face in the tunnel extension direction and information on the position, posture, and orientation of the moving carriage, and
A relative information acquisition unit that acquires information on the position, posture, and orientation of the drilling machine with respect to the moving carriage, and
Further provided with a hydraulic pressure detection unit that acquires the drilling energy value from the hydraulic pressure that drives the drifter of the drilling machine.
The perforation navigation device according to claim 4, wherein the perforation information calculation unit calculates the perforation information based on the information acquired by the reference information acquisition unit, the relative information acquisition unit, and the oil pressure detection unit.

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