JPH0631531B2 - Split rock method and its device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a split rock method and an apparatus therefor utilizing elastic deformation of an elastic body.

[Technical Background and Prior Art] An elastic body is inserted into a hole formed by drilling rock or the like, and the elastic body is expanded in the radial direction to perform split rock, and a device therefor is disclosed, for example, in Japanese Patent Laid-Open No. 58-41189. Gazette and Japanese Patent Laid-Open No.
It is known as Japanese Patent No. 52797.

However, in these conventional techniques, the drilling process and the split rock process are performed in separate and independent processes using separate devices.

Therefore, it is necessary to move the boring device after the boring process by the boring device is completed, move the rock breaking device to the boring position, and perform the rock breaking method.

For example, JP-A-59-109698 and JP-A-60-
Japanese Patent Publication No. 95099 discloses a technique in which an elastic body is inserted into a hole excavated in rock to expand the elastic body in a radial direction with a jack to crush the rock. However, in such a known technique, since the drilling work and the elastic body inserting work use separate devices, the work efficiency is not sufficient.

[PROBLEMS TO BE SOLVED] Therefore, an object of the present invention is to provide a grooving method and an apparatus thereof capable of performing an excellent grooving work without exchanging the device after drilling work.

[Means for Solving the Problems] According to the invention of the method, in a crushing rock method in which the elastic deformation of an elastic body in the radial direction is utilized, a drill bit guided along a guide cell has a drill bit at its tip. A rod is attached, an elastic deformation device having an outer tube and an elastic body provided around the rod is attached to a center hole jack which is guided along a guide cell and has a built-in piston jack, and rock is drilled with a drilling bit. Then, the elastic deformation device is inserted into the drilled hole, the piston jack is pulled up to expand the elastic deformation device in the radial direction, and thereby the rock mass is crushed.

According to the invention of the device, in the crushing rock device which utilizes the elastic deformation of the elastic body in the radial direction, a drifter provided along a guide cell is provided, and a rod having a drill bit at the tip thereof is provided in the drifter. Further, a center hole jack that is installed along the guide cell is provided below the drifter, and an elastic deformation device including an outer tube and an elastic body is attached to the center hole jack, and the outer tube is attached to the outer circumference of the rod. A piston jack is provided in the center hole jack, and a lock nut that holds the rod when the elastic body is radially expanded is provided between the drifter and the center hole jack.

[Explanation of Operation and Effect] Therefore, the elastic body is held on the ground by the center hole jack during the drilling work by the drilling bit, and the elastic body is removed by lowering the center hole jack after the drilling work is completed. It is inserted into the drilled hole. When the lock nut is positioned above the center hole jack and engaged with the rod, and the piston jack is moved upward from the center hole jack, the rod moves upward. Then, the upper part of the elastic body is held by the outer tube, and the lower part of the elastic body is pressed by the hole-eliminating bit to expand radially outward,
As a result, split rock work is performed.

As described above, according to the present invention, the elastic body is made to stand by in advance, and after the drilling work, the elastic body can be immediately inserted to perform the split rock work, so that the working time can be shortened and the working efficiency is improved.

And since there is no need for two devices as in the prior art,
The labor required for moving the device can be eliminated, and the work amount can be reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show a split rock method of the present invention and an apparatus used for the method, which comprises a drifter 2 for driving a rod 1, a guide cell 6 arranged in parallel with the rod 1,
A center hole jack 4 guided by the guide cell 6, a self-propelled lock nut 3 provided between the drifter 2 and the center hole jack 4, and the like are provided.

The elastic deformation device provided below the center hole jack 4 is composed of an outer tube 10 and urethane rubber 11, and upper and lower washers 1 are provided above and below the urethane rubber 11, respectively.
2 and the lower washer 13 are attached.

A drill bit 14 is attached below the lower washer 13, and a fall prevention device 7 is arranged to prevent the elastic deformation device from falling into the hole when the drill bit is operated. FIG. 1 shows a state in which the entire apparatus described above is set at a drilling position. After the positioning is completed, the process moves to the drilling step shown in FIG. In this drilling step, the rod 1 is driven by the drifter 2 and the drill bit 14 attached to the tip of the rod 1
The rock is drilled by.

The self-propelled lock nut 3, the center hole jack 4, the outer tube 10, etc. are made so as not to interfere with the rotation and the rolling movement of the rod 1, and the elastic deformation device 1
The inner diameter of 1 is also larger than the outer diameter of the rod 1.

During the drilling, the fall prevention device 7 is used to elastically deform the device 1.
Support 1.

FIG. 3 shows a drilling end step after the tip of the drilling bit 14 has been drilled to a specified depth.

Simultaneously with the completion of drilling, the process proceeds to the elastic deformation device insertion step shown in FIG. In this step, the fall prevention device 7 is opened to make the elastic deformation device free, and the rod 1 is rotated by the self-propelled lock nut device 3 to insert the entire elastic deformation device into the drilled hole. The insertion is continued until the lower washer 13 contacts the drill bit 14.

After the insertion of the elastic deformation device is completed, as shown in FIG. 5, the lock nut device 3 is lowered to a position in contact with the upper end of the center hole jack 4, and the lock nut device 3 is locked to the rod 1.

Next, the split rock process shown in FIG. 6 will be described. The center hole jack 4 is driven with the lock nut device 3 fixed to the rod 1, and the piston jack 8 arranged inside the center hole jack 4 is lifted. When the piston jack 8 rises, the rod 1 is pushed through the lock nut 3.
Is forcibly raised. The drill bit 14 attached to the lower end of the rod 1 tries to push up the lower washer 13 and the urethane rubber 11, but the upper washer 12 cannot be lifted by being pressed by the center hole jack 4 by the outer tube 10.

Upon receiving this axial pressure, the urethane rubber 11 expands in the radial direction and crushes the bedrock 20 in a known manner.
After the split rock process is completed, the expansion of the urethane rubber 11 is returned, and the entire elastic deformation device is pulled out to complete the work.
In this embodiment, the urethane rubber 11 is used as the expansion body of the elastic deformation device, but it is naturally possible to use another elastic body.

[Effects of the Invention] As described above, the present invention has the following excellent effects.

(I) Since drilling work and split rock work can be performed using one device, work time is shortened and work efficiency is improved.

(Ii) Since two devices are not required as in the conventional technique, the labor required for moving the devices is reduced and the work amount can be reduced.

(Iii) As for the device itself, it is sufficient to attach the lock nut, the center hole jack, and the elastic deformation device to the conventional drilling device, and the conventional device can be easily improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an explanatory view showing a movement and positioning process of the entire apparatus, FIG. 2 is an explanatory view showing a drilling process, and FIG. 3 is a completion status of the drilling process. FIG. 4 is an explanatory view showing an elastic deformation device inserting step, and FIG. 5 is an explanatory view showing a center hole jack fixing step.
FIG. 6 is an explanatory view showing the split rock process. 1 ... Rod, 2 ... Drifter, 3 ... Self-propelled lock nut, 4 ... Center hole jack, 10 ... Outer tube, 11 ... Urethane rubber, 14 ... Drill bit

Claims (2)

[Claims] 1. A method of splitting rocks by utilizing elastic deformation of an elastic body in a radial direction, wherein a rod having a drill bit at its tip is attached to a drifter guided along the guide cells, and along the guide cells. An elastic deformation device having an outer tube provided around the rod and an elastic body is attached to a center hole jack having a built-in piston jack that is guided, and rock mass is drilled with a drill bit, and then the elastic deformation device is drilled in the hole. The rock breaking method is characterized in that the rock mass is crushed by inserting the piston into the piston, pulling up the piston jack to expand the elastic deformation device in the radial direction. 2. In a rock breaking device for breaking rocks by utilizing elastic deformation of an elastic body in a radial direction, a drifter guided along a guide cell is provided, and a rod having a drill bit at its tip is attached to the drifter. Further, a center hole jack guided along a guide cell is provided below the drifter, and an elastic deformation device including an outer tube and an elastic body is attached to the center hole jack, and the outer tube is arranged on the outer circumference of the rod. A piston jack is provided in the center hole jack, and a lock nut that holds a rod when the elastic body is radially expanded is provided between the drifter and the center hole jack. Split rock device.