JPH0721180B2 - Underground obstacle treatment method and its equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention investigates the situation of underground springs, buried obstacles, existing buried matters, etc., which are obstacles to civil engineering work accompanied with underground excavation, and performs underground obstacle treatment for dealing with the situation. It concerns the construction method and its equipment.

[0002]

2. Description of the Related Art Conventionally, when encountering construction faults such as underground springs, buried obstacles, and existing buried objects in civil engineering works for tunnel excavation and underground structure construction, sampling pipes are used as the target ground. Measures to trouble-shoot are considered after confirming directly by sampling by piercing or by trial excavation of the ground, and further by investigating the crustal history and past construction record of the ground with a written document. , Processing is taking place.

In addition, regarding the shape investigation of the underground cavity, the shape is grasped by the analysis of the sound wave by transmitting the ultrasonic wave and capturing the reflection echo, but the obstacle treatment is performed while directly observing the underground condition visually. Is not done. In addition, confirmation of the curing material injection range is an issue in the injection method and the like, but it has not been established yet.

[0004]

[Problems to be Solved by the Invention] As described above, conventionally, there is no direct visual observation of the inside of the drilling hole, but the situation inside the drilling hole is grasped based on the indirect data according to the purpose, and then the countermeasure for the failure is taken. Has been considered, a treatment plan has been established, and a method of treating according to this plan has been adopted.

Therefore, since it is not possible to grasp the complicated situation inside the mine due to obstacles such as encountering an underground buried object during excavation, there is a problem that the cause corresponding to the purpose of drilling cannot be found out. there were. In particular, regarding the stoppage of underground spring water, the existence of water veins and waterways must be estimated and trial and digging and injection are repeated.

Under such circumstances, once the construction encounters a failure, large-scale investigation and treatment work are required for the treatment, and it takes a lot of labor and time, resulting in a large delay in the construction period. ing.

[0007]

[Means for Solving the Problems] In order to solve the above problems, the present invention inserts an insertion rod equipped with an obstacle exploration processing device directly into the ground causing the obstacle, and cleans the surrounding area by high-pressure injection of fresh water at required locations. Widen the hole and check the condition of the fault-causing part from the operation part outside the hole using the equipped shooting camera, and operate the insertion rod to move or directly trouble-shoot with the underground fault-handling device inserted in the relevant part. It is the one.

Further, since the gas and fresh water in the drill hole often become turbid due to the drilling operation and the temperature difference, the temperature-controlled compressed gas is injected and filled into the drill hole to clear the view in the drill hole. Alternatively, a floc settling agent was added to the filling water in the mine to cause the suspended matter in the filling water to aggregate and settle to make the filling water transparent.

[0009]

[Operation] When the injection water or the temperature-controlled gas is injected by the injection of fresh water or the injection of compressed gas into the hole drilled to widen the hole by inserting the insertion rod, the inner wall of the hole causes the hole wall of the hole to be drilled. Is protected, the collapse of the pit wall is prevented, the roughness of the wall surface due to excavation etc. is arranged, and the reflection of the light from the light source equipped in the photographing camera is maintained to make it easy to understand as an image.

When fresh water is filled in the mine, the mixture and turbidity of slime due to the stirring action of excavation and injection, which has been continued until then, causes the turbid suspended matter to flocculate and settle due to the action of the floc sedimentation agent added to the fresh water. Therefore, the filling water in the drilling pit becomes permeate without turbidity.

When a gas such as air is filled in the mine, since the gas in the mine is turned into an opaque gas due to the stirring action of excavation and jetting, which has been continued until then, and geothermal heat, the field of view becomes cloudy and extremely bad. When the temperature-controlled gas is filled therein, the turbid gas is vaporized or liquefied and the inside of the drilling hole is cleared.

Then, a photographing camera equipped on the insertion rod photographs the inside of the mine, and the photographed image is transmitted to an image receiving device such as a TV monitor installed in the outside operation section. It is possible to perform a target operation such as injecting a hardening material, cutting an obstacle, and making a hole while capturing the situation.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an insertion rod, which is supported by an operation mechanism 2 and is given operations such as lowering, raising, rotating, and reciprocating rotation at an arbitrary angle. An injection nozzle 3 is provided on the side wall of the distal end portion of the insertion rod 1, and a photographing camera 4 equipped with a light source is provided on the setting rear surface thereof. Further, a suction hole 7 for slime or the like is opened from the spray nozzle 3 at an appropriate interval.

The injection nozzle 3 is provided with a material supply hose 10 through the injection material supply path 8 in the drilling rod 1 and a swivel 5.
To the material supply tank 13 such as fresh water. Further, as the photographing camera 4, an ultra-small camera such as a head-separated charge-coupled device (CCD) camera equipped with RGB output is used, and an image receiving device in which a video transmission mechanism is installed in an operation section outside the hole.
It is connected to 12, and the angle and direction of shooting can be controlled from the outside of the hole.

On the other hand, a supply switching device 9 is installed in the swivel 5 so that the supply of fresh water and the supply of injection material such as ground hardening material can be switched appropriately, and the fresh water from the drilling rod 1 can be switched. When the hole drilling by the injection and the situation inside the mine are confirmed to the required position, the supply is switched to the ground hardening material, etc., so that the underground structure for water stop etc. can also be created. Has become.

Further, the supply hose 10 for supplying fresh water,
A floc-precipitating agent adding device 11 for adding an inorganic floc-precipitating agent whose main component is polychlorinated aluminum or the like or an organic-type floc precipitating agent whose main component is nonion, anion or cation to fresh water at the time of supply is additionally provided.

When supplying the temperature adjusting gas, the supply hose 10 is provided with a temperature adjusting device such as a liquid nitrogen supply mechanism or a hot air supply mechanism instead of the floc sedimentation agent addition device 11.

The photographing camera 4 equipped with a light source transmits the image photographed in the mine to the image receiving device 12 installed in the outside hole operating section by the electric transmission mechanism, and the worker receives it in the image receiving television monitor 12 in the outside hole operating section. Drilling operation can be performed while checking the inside of the pit.

The processing of the ground fault according to the present invention is performed by, for example,
Using such an apparatus system, first, the insertion rod 1 is propelled and inserted into the target ground where the cause of the obstacle exists by an appropriate means such as rotation or an insertion casing.

At a predetermined depth, fresh water is pressure-fed to the insertion rod 1 to be injected from the injection nozzle 3 to fill the inside of the drilling hole, and the injection pressure is increased to cut the drilling wall with a high-pressure jet of fresh water to cut the earth and sand. The slime is sucked by the slime suction hole 7 capable of operating a suction device as needed, and is lifted and discharged.

In this way, when the insertion rod 1 is rotated and retracted while cutting the surrounding pit wall ground with the high-pressure and high-speed fresh water jet, it has an arbitrary shape such as a column or a fan along the trajectory of the fresh water jet. Shimizu filling cavity A is created.

When the fresh water filling cavity A is formed up to the required portion and the drilling pit reaches the required position where the cause of failure can be confirmed, the fresh water injection is stopped and the floc sedimentation agent is pumped by the floc sedimentation agent addition device 11. Then, when the floc sedimentation agent is added to the filling water in the fresh water filling cavity A, the floating material and the turbid material of the filling water settle and the filling water becomes transparent.

Therefore, the light source mounted on the photographing camera 4 is turned on to operate the camera, and the photographed image inside the mine is transmitted to the image receiving device 12 installed in the outside hole operating section by the electric transmission mechanism, and the worker outside the hole. While confirming the inside of the drilling hole received by the image receiving television monitor 12 in the operation section, a processing device according to the cause of the failure is inserted into the relevant part, or a hardening material by the injection nozzle 3 equipped on the insertion rod 1. The process is performed while confirming the obstacle status such as injection and crushing obstacles by laser beam emission.

When a boulder is present on the front surface of the mechanical shield as a construction obstacle and it is an obstacle, the insertion rod 1 is inserted from the upper part of the ground and the condition of the boulder is confirmed by the operation. It is also possible to perform a process in which the lower part of the cobblestone is loosened by injecting fresh water to sink the cobblestone.

Further, from a position different from the insertion hole of the insertion rod 1, an insertion rod having a chain saw mechanism at its tip is inserted to cut an obstacle, or a hardening material injection rod is inserted to insert an underground structure. It is also possible to perform processing such as repairing and repairing.

On the other hand, if the supply hose 10 is provided with a liquid nitrogen supply mechanism, a hot air supply mechanism, etc., and a temperature control gas is supplied, a dry space can be obtained in the drilling pit, which is difficult to process in water. It can also handle processing.

[0027]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, it is possible to directly confirm the situation in the underground drilling hole, which has been conventionally captured by indirect data and estimation, and waste unnecessary labor such as trial drilling. Instead, it is possible to grasp the situation inside the drilling pit and to trust the construction state of the underground structure.
This has the effect of increasing efficiency in terms of work and cost in the construction of underground structures, injection of hardening material, etc.

[0028]

[Brief description of drawings]

FIG. 1 is an overall explanatory diagram showing a drilling condition of a fresh water filling cavity.

FIG. 2 is an overall explanatory diagram showing a failure processing situation while capturing a situation by an insertion rod.

FIG. 3 is an enlarged side view of an insertion rod tip portion with a notched cross section of a main portion.

[Explanation of symbols]

 1 Insertion Rod 2 Operation Mechanism 3 Injection Nozzle 4 Photographic Camera 5 Swivel 6 Injection Material Supply Hose 7 Slime Suction Hole 8 Injection Material Supply Path 9 Supply Switching Device 10 Fresh Water Supply Hose 11 Flock Precipitating Agent Addition Device 12 Image-Receiving Television Monitor Equipment 13 Fresh Water Supply Tank 14 Light source A Fresh water filling cavity B Obstacle C Treatment equipment

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-119219 (JP, A)

Claims (6)

[Claims] 1. A shooting camera and a light source are provided at the tip to transmit an image taken inside the mine to an image receiving device installed in the outside hole operation section, and an insertion rod having a jet nozzle on the side wall is inserted into the ground causing the obstacle. Then, at the required location, the surrounding area is widened by high-pressure injection of fresh water, and the operation of the insertion rod is performed while checking the condition of the failure-causing part from the operation part outside the hole with the shooting camera or the underground inserted separately at the relevant part. Underground obstacle treatment method characterized by performing obstacle treatment by obstacle treatment equipment 2. The underground obstacle according to claim 1, wherein a compressed gas whose temperature has been adjusted is injected and filled into the hole drilling hole having a widened hole in the periphery so as to clear the field of view in the hole drilling hole. Processing method 3. Injecting and filling fresh water into the hole pit,
The underground obstacle treatment method according to claim 1, wherein a floc sedimentation agent is added to the filling water to cause the suspended matter in the filling water to coagulate and settle to make the filling water transparent. 4. A "claim 1" or "claim 2" in which a curable hardening layer is formed in the trouble-causing part by injecting a hardening material at a high pressure from a spray nozzle to the cause-causing part according to the situation of the trouble-causing part. Underground obstacle treatment method according to claim 3 5. A laser beam or ultra-high pressure water radiating mechanism is provided at the tip of the insertion rod so that an obstacle existing at a required position can be cut by the laser beam or ultra-high pressure water radiation. Claim 2 ", Claim 3"
Underground obstacle treatment method described 6. A drilling hole provided with a photographing camera and a light source for transmitting a photographed image to an image receiving device installed in an operation section outside the hole, and a jet nozzle and a laser beam or a mechanism for radiating ultra-high pressure water on a side wall at a tip portion. Underground obstacle treatment device in which the rod is supported by a rotating vertical movement mechanism.