Hole throwing device for collapsed hole channel

Abstract

The invention discloses a hole throwing device for a collapsed hole channel, and relates to the technical field of coal mine production, the hole throwing device comprises a water stop valve and a drill rod, the left end of the water stop valve is installed at the end of a sleeve, an anti-falling device is arranged at the right end of the water stop valve, the anti-falling device comprises a fixed disc, and a fixed baffle is fixedly installed in the middle of an inner cavity of the fixed disc; a movable baffle is arranged on the upper portion of the fixed baffle and installed at the top end of an inner cavity of the fixed disc through a tensioning spring, a waste rock discharging hole is formed by the fixed baffle and the bottom of the inner cavity of the fixed disc, a drill bit is arranged at one end of the drill rod and arranged in the sleeve, and the other end of the drill rod penetrates through the water stop valve and is connected with a drilling machine. The drill rod is limited and installed between the movable baffle and the fixed baffle in the anti-falling device, the hole collapse situation can be effectively handled, hole throwing and dredging can be conducted in time, the situation that a drill hole collapses, is blocked and abandoned, the drill rod falls off accidentally in the process of increasing the drill rod is avoided, and the construction reliability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine production, in particular to a hole-casting device used for collapsing hole channels. Background Art

[0002] In recent years, the coal industry has shown a stable development trend. In order to continuously improve the production technology level and safety guarantee level, the safe mining of coal resources is given top priority. However, the geology and hydrology around the coal mines are complex, and the mines are mainly subject to "four major water hazards", namely surface water hazards, old empty water hazards, surrounding coal mine water hazards and floor pressure water hazards. At present, the construction of water exploration and drainage is particularly important. Through strengthening the exploration of hydrogeological conditions, comprehensive management of the wells, and improving the mine hydrological automatic monitoring system and emergency response plans, a series of water prevention and control measures have been gradually formed, including "prevention, blocking, dredging, drainage, interception, exploration, and monitoring", which effectively ensures the safe production of mines.

[0003] Drilling is required for water exploration and drainage. The drilling rig drives a drill rod that can be extended, and a drill bit is set at the front end of the drill rod. The outer diameter of the drill bit is larger than the outer diameter of the drill rod. During the drilling process, the drill rod generally does not contact the hole wall. After the drilling is completed, the drill rod and the drill bit are withdrawn together. The hole after drilling is installed with casing. Due to the harsh geological conditions, the rock stress is very large, and the coal seam is sometimes too hard or too soft. During the drilling process or after the drilling is completed, the drilled hole often collapses, which greatly affects the drainage efficiency, forms a blockage, causes safety hazards, and seriously affects production efficiency. Summary of the invention

[0004] In order to overcome the defects in the prior art that the collapse of the hole causes blockage, resulting in insufficient drilling depth and greatly affecting the emptying efficiency and production efficiency, the present invention provides a drilling device for collapsed hole channels.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a drilling device for collapsed holes, including a water stop valve and a drill rod, the left end of the water stop valve is installed at the end of the casing, and the right end of the water stop valve is provided with an anti-slip device, the anti-slip device includes a fixed disc, a fixed baffle is fixedly installed in the middle of the inner cavity of the fixed disc, a movable baffle is provided on the upper part of the fixed baffle, the movable baffle is installed on the top of the inner cavity of the fixed disc through a tensioning spring, the fixed baffle and the bottom of the inner cavity of the fixed disc form a waste discharge hole, one end of the drill rod is provided with a drill bit and is arranged in the casing, the other end of the drill rod passes through the water stop valve and is connected to the drilling rig, and the drill rod is limited and installed between the movable baffle and the fixed baffle in the anti-slip device.

[0006] As a further improvement of the present invention, the drill rod is a twist drill rod.

[0007] As a further improvement of the present invention, a plurality of fixing bolts are provided on the fixing disc.

[0008] As a further improvement of the present invention, the fixed baffle and the fixed disc are welded into one body.

[0009] As a further improvement of the present invention, both the movable baffle and the fixed baffle are provided with limiting grooves.

[0010] As a further improvement of the present invention, a mounting seat is provided at the top of the inner cavity of the fixed disc, and a tension spring is arranged on the mounting seat.

[0011] As a further improvement of the present invention, a guide column is provided on the fixed baffle plate, and the movable baffle plate is slidably connected to the guide column.

[0012] As a further improvement of the present invention, a sealing ring is provided between the water stop valve and the anti-dropping device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: in this scheme, the drilling rig drives the drill rod to rotate, and the drill bit at the end of the drill rod crushes the gangue at the collapsed hole. Under the continuous rotation of the drill rod, the crushed gangue is introduced into the casing, and the crushed gangue is continuously discharged outward in the gap between the drill rod and the casing, and is discharged through the water stop valve and the gangue discharge hole in the anti-slip device. The collapsed hole can be effectively handled, and the hole can be dredged in time to avoid the blockage and abandonment of the collapsed hole. Under the action of the tension spring, the drill rod is limited and installed between the movable baffle and the fixed baffle in the anti-slip device to prevent the drill rod from accidentally falling off during construction and increasing the drill rod, thereby improving the reliability of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 The present invention is a schematic structural diagram of a hole-casting device for collapsing a hole channel.

[0016] Figure 2 It is a schematic structural diagram of the anti-falling device of the present invention.

[0017] In the figure: 1. water stop valve; 2. casing; 3. drill rod; 4. drill bit; 5. anti-slip device; 6. fixed disc; 7. tension spring; 8. movable baffle; 9. fixed baffle; 10. fixing bolt; 11. gangue discharge hole; 12. collapsed gangue; 13. coal rock; 14. limit groove; 15. mounting seat; 16. guide column. DETAILED DESCRIPTION

[0018] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0019] Reference Figure 1The embodiment of the present invention discloses a drilling device for a collapsed hole, comprising a water stop valve 1 and a drill rod 3. The left end of the water stop valve 1 is installed at the end of a casing 2, and the right end of the water stop valve 1 is provided with an anti-slip device 5. One end of the drill rod 3 is provided with a drill bit 4 and is arranged in the casing 2. The other end of the drill rod 3 passes through the water stop valve 1 and is connected to a drilling rig. The drill rod 3 is limited and installed in the anti-slip device 5.

[0020] Reference Figure 2 The anti-slip device 5 includes a fixed disc 6, a fixed baffle 9 is fixedly installed in the middle of the inner cavity of the fixed disc 6, a movable baffle 8 is provided on the upper part of the fixed baffle 9, and the movable baffle 8 is installed on the top of the inner cavity of the fixed disc 6 through a tension spring 7. The fixed baffle 9 and the bottom of the inner cavity of the fixed disc 6 form a gangue discharge hole 11, and the drill rod 3 is limited and installed between the movable baffle 8 and the fixed baffle 9 in the anti-slip device 5.

[0021] When collapsed gangue 12 is generated in the channel of the coal rock mass 13, the drilling rig drives the drill rod 3 to rotate, and the drill bit 4 at the end of the drill rod 3 breaks the gangue at the collapsed hole. Under the continuous rotation of the drill rod 3, the broken gangue is introduced into the casing 2. The drill rod 3 is a twist drill rod, and the special spiral structure can improve the slag discharge efficiency. The broken gangue is continuously discharged outward in the gap between the drill rod 3 and the casing 2, and is discharged through the water stop valve 1 and the gangue discharge hole 11 in the anti-detachment device 5. The anti-detachment device 5 also prevents the drill rod 3 from falling off. Under the action of the tension spring 7, the drill rod 3 is limited and installed between the movable baffle 8 and the fixed baffle 9 in the anti-detachment device 5 to prevent the drill rod from accidentally falling off during construction and increasing the drill rod, thereby improving the reliability of construction.

[0022] Use a Φ42mm drill bit 4 with a Φ38mm twist drill rod. When the drill bit 4 is pushed to the position of the collapsed gangue 12, the drill rig is used to rotate the drill rod 3 to drive the drill bit 4 to break the gangue blocked in the hole. A plurality of fixing bolts 10 are arranged on the fixing disc 6. The fixing disc 6 is fixed to the water stop valve 1 by the fixing bolts 10, and a sealing ring is arranged between the water stop valve 1 and the anti-dropping device 5, so as to improve the sealing performance.

[0023] The fixed baffle 9 is welded to the fixed disc 6 as a whole, and the movable baffle 8 and the fixed baffle 9 are both provided with a limit groove 14. The drill rod 3 is limitedly installed between the limit grooves 14, so that the locking is more stable. The top of the inner cavity of the fixed disc 6 is provided with a mounting seat 15, and the tension spring 7 is arranged on the mounting seat 15, so that the force is more stable. A guide column 16 is provided on the fixed baffle 9, and the movable baffle 8 is slidably connected to the guide column 16. The movable baffle 8 rises and falls along the guide column 16, which plays a guiding role and prevents deviation.

[0024] With very little investment, the drilling device can promptly clear the drilling holes for exploration and drainage, ensure that the accumulated water can be discharged in time, avoid repeated construction and repair work due to hole collapse, thereby saving time and engineering costs and ensuring mine safety.

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A hole-casting device for collapsing a hole channel, characterized in that: The invention comprises a water stop valve (1) and a drill rod (3). The left end of the water stop valve (1) is mounted on the end of a casing (2). The right end of the water stop valve (1) is provided with an anti-slip device (5). The anti-slip device (5) comprises a fixed disc (6). A fixed baffle (9) is fixedly mounted in the middle of the inner cavity of the fixed disc (6). A movable baffle (8) is provided on the upper part of the fixed baffle (9). The movable baffle (8) is mounted on the top of the inner cavity of the fixed disc (6) through a tension spring (7). The fixed baffle (9) and the bottom of the inner cavity of the fixed disc (6) form a gangue discharge hole (11). A drill bit (4) is provided at one end of the drill rod (3) and is arranged in the casing (2). The other end of the drill rod (3) passes through the water stop valve (1) and is connected to a drilling rig. The drill rod (3) is limited and mounted between the movable baffle (8) and the fixed baffle (9) in the anti-slip device (5).

2. A hole-casting device for collapsing a hole channel according to claim 1, characterized in that: The drill rod (3) is a twist drill rod.

3. A hole-casting device for collapsing a hole channel according to claim 2, characterized in that: A plurality of fixing bolts (10) are provided on the fixing disc (6).

4. A hole-casting device for collapsing a hole channel according to claim 3, characterized in that: The fixed baffle (9) and the fixed disc (6) are welded together as one body.

5. A hole-casting device for collapsing a hole channel according to claim 4, characterized in that: The movable baffle (8) and the fixed baffle (9) are both provided with limiting grooves (14).

6. A hole-casting device for collapsing a hole channel according to claim 5, characterized in that: A mounting seat (15) is provided at the top of the inner cavity of the fixed disc (6), and a tension spring (7) is arranged on the mounting seat (15).

7. A hole-casting device for collapsing a hole channel according to claim 6, characterized in that: A guide column (16) is provided on the fixed baffle (9), and the movable baffle (8) is slidably connected to the guide column (16).

8. A hole casting device for collapsing a hole channel according to claim 7, characterized in that: A sealing ring is provided between the water stop valve (1) and the anti-drop device (5).

Images