Ground directional drilling grouting device

Abstract

The utility model discloses a ground directional drilling grouting device, which belongs to the technical field of coal mine water disaster ground prevention and control, and is provided with an intermediate casing pipe opening connecting device, the intermediate casing pipe opening connecting device is connected with an intermediate casing pipe ground opening through an intermediate casing pipe connecting male buckle, and a water inlet pipe is arranged on the side edge of the intermediate casing pipe opening connecting device; a grouting channel connecting device is inserted and installed in the intermediate casing pipe opening connecting device, the intermediate casing pipe opening connecting device and the grouting channel connecting device form orifice sealing through a sealing flange and a fixing bolt, and the grouting channel connecting device is connected with a grouting drill rod through a grouting drill rod connecting male buckle. Grouting pipes are arranged on the two sides of the grouting channel connecting device. According to the grouting device, cement grout does not flow through the technical casing, the cement grout can be prevented from being reserved in the technical casing, waste of the cement grout is reduced, and invalid grouting cost is reduced; as no cement deposits exist in the technical casing, hole sweeping and clearing are not needed, the construction auxiliary time is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ground prevention and treatment of water hazards in coal mines, in particular to a ground directional drilling and grouting device. Background Art

[0002] In the ground area management of coal mine water prevention and control, ground directional drilling requires grouting to seal and manage the water channel. The traditional grouting method is to press cement slurry directly into the hole through the ground pipeline for grouting.

[0003] After grouting, a large amount of cement-based deposits will accumulate in the technical casing. On the one hand, the cement slurry in the technical casing will not be utilized, resulting in a waste of cement slurry and increased ineffective costs. On the other hand, the cement deposits in the technical casing need to be cleared by hole sweeping. Generally, the technical casing is hundreds of meters long, which leads to a long drilling and hole sweeping time and increased construction auxiliary time. In addition, during the hole sweeping process, occasional contact between the drill bit and the inner wall of the casing can easily aggravate the wear of the casing, shorten the service life of the casing, and cause safety hazards in the hole.

[0004] Therefore, there is an urgent need for designers to design reasonable ground directional drilling grouting devices to solve the defects brought by traditional grouting methods. Utility Model Content

[0005] The utility model aims to provide a ground directional drilling grouting device, which is dedicated to solving the problems of ineffective drilling grouting cost, construction efficiency and safety in the drilling hole.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A ground directional drilling grouting device: having a technical casing port connection device, the technical casing port connection device is connected to the ground port of the technical casing through a technical casing connection male buckle, a water inlet pipe is arranged on the side of the technical casing port connection device, a water pipe joint, a first control valve, and a first pressure gauge are installed on the water inlet pipe, and the water pipe joint is connected to the water pipeline; a grouting channel connection device is inserted and installed in the technical casing port connection device, the technical casing port connection device and the grouting channel connection device form a hole seal through a sealing flange and a fixing bolt, and the grouting channel connection device is connected to the grouting drill rod through The grouting drill rod is connected through a male buckle, and grouting pipes are arranged on both sides of the grouting channel connecting device, wherein the opening position of the left grouting pipe is slightly lower than that of the right grouting pipe, and the left grouting pipe is equipped with a first grouting pipe joint, a second control valve, and a second pressure gauge, and the right grouting pipe is equipped with a second grouting pipe joint, a third control valve, and a third pressure gauge, and the first grouting pipe joint and the second grouting pipe joint are connected to the grouting pipeline; the grouting drill rod extends into the space under the ground, the inner diameter space of the grouting drill rod is the grouting channel, and the space between the inner diameter of the technical casing and the outer diameter of the grouting drill rod is the annulus channel.

[0008] Preferably, the first control valve is installed on the water inlet pipe to control the water flow rate; the second control valve and the third control valve are installed on the grouting pipe to control the slurry flow rate.

[0009] Preferably, the first pressure gauge and the second pressure gauge are seismic-resistant pressure gauges for monitoring the orifice pressure; and the third pressure gauge is a seismic-resistant pressure gauge for monitoring the annular space pressure.

[0010] Preferably, the ground opening of the technical casing is the position where the technical casing is exposed on the ground, and the opening is a female buckle; the lower end of the technical casing opening connecting device is provided with a technical casing connecting male buckle, which is connected to the female buckle of the ground opening of the technical casing.

[0011] Preferably, the grouting drill rod is a flow channel for the slurry in the technical casing, the inner diameter space of the grouting drill rod is the grouting channel, and a grouting drill rod female buckle is provided on the top of the grouting drill rod; a grouting drill rod connecting male buckle is provided at the lower end of the grouting channel connecting device, which is connected to the grouting drill rod female buckle.

[0012] Preferably, the grouting drill rod extends into the space below the ground opening of the technical casing, and its bottom reaches the pre-set bottom opening of the technical casing hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Compared with the traditional hole grouting device, the utility model prevents cement slurry from flowing through the technical casing, thereby avoiding the retention of cement slurry in the technical casing, reducing the waste of cement slurry and reducing the cost of ineffective grouting.

[0015] 2. Compared with the traditional hole grouting device, the utility model has no cement deposits in the technical casing, so there is no need to clean the hole, which greatly shortens the drilling and cleaning time, reduces the construction auxiliary time, and improves the construction efficiency.

[0016] 3. Compared with the traditional hole grouting device, the utility model has no cement accumulation in the technical casing, so there is no need to sweep the hole in the technical casing, which avoids the occasional contact between the drill bit and the inner wall of the casing during the sweeping process, causing the casing to wear and shorten the service life of the casing, which is beneficial to the safety of the drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the casing connection device of the utility model;

[0019] Figure 3It is a schematic diagram of the structure of the grouting channel connecting device of the utility model.

[0020] In the figure: 1. technical casing port connection device; 2. grouting channel connection device; 3. water pipe joint; 4. first control valve; 5. first pressure gauge; 6. sealing flange; 7. fixing bolt; 8. first grouting pipe joint; 9. second control valve; 10. second pressure gauge; 11. second grouting pipe joint; 12. third control valve; 13. third pressure gauge; 14. technical casing ground port; 15. grouting drill rod; 16. ground; 17. grouting channel; 18. annular channel; 19. technical casing bottom hole port; 20. technical casing connection male buckle; 21. grouting drill rod connection male buckle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-3 The utility model provides a technical solution: a ground directional drilling grouting device: it has a technical casing port connecting device 1, the technical casing port connecting device 1 is connected to the technical casing ground port 14 through a technical casing connecting male buckle 20, a water inlet pipe is arranged on the side of the technical casing port connecting device 1, a water pipe joint 3, a first control valve 4, and a first pressure gauge 5 are installed on the water inlet pipe, and the water pipe joint 3 is connected to the water pipeline; a grouting channel connecting device 2 is inserted and installed in the technical casing port connecting device 1, the technical casing port connecting device 1 and the grouting channel connecting device 2 form a hole seal through a sealing flange 6 and a fixing bolt 7, and the grouting channel connecting device 2 is connected to the grouting drill rod 15 is connected through a grouting drill pipe connecting male buckle 21, and grouting pipes are arranged on both sides of the grouting channel connecting device 2, wherein the opening position of the left grouting pipe is slightly lower than that of the right grouting pipe, and the left grouting pipe is installed with a first grouting pipe joint 8, a second control valve 9, and a second pressure gauge 10, and the right grouting pipe is installed with a second grouting pipe joint 11, a third control valve 12, and a third pressure gauge 13, and the first grouting pipe joint 8 and the second grouting pipe joint 11 are connected to the grouting pipeline; the grouting drill pipe 15 extends into the space under the ground 16, the inner diameter space of the grouting drill pipe 15 is the grouting channel 17, and the space between the inner diameter of the technical casing and the outer diameter of the grouting drill pipe 15 is the annulus channel 18.

[0023] Furthermore, the first control valve is installed on the water inlet pipe to control the water flow rate; the second control valve and the third control valve are installed on the grouting pipe to control the slurry flow rate.

[0024] Furthermore, the first pressure gauge and the second pressure gauge are seismic-resistant pressure gauges for monitoring the orifice pressure; the third pressure gauge is a seismic-resistant pressure gauge for monitoring the annular space pressure.

[0025] Furthermore, the ground opening of the technical casing is the position where the technical casing is exposed on the ground, and the opening is a female buckle; the lower end of the technical casing opening connection device is provided with a technical casing connection male buckle, which is connected to the female buckle of the ground opening of the technical casing.

[0026] Furthermore, the grouting drill rod is a flow channel for the slurry in the technical casing, the inner diameter space of the grouting drill rod is the grouting channel, and a grouting drill rod female buckle is arranged on the top of the grouting drill rod; the lower end of the grouting channel connecting device is provided with a grouting drill rod connecting male buckle, which is connected to the grouting drill rod female buckle.

[0027] Furthermore, the grouting drill rod extends into the space below the ground opening of the technical casing, and its bottom reaches the pre-set technical casing hole bottom opening 19.

[0028] The key technical points of the embodiment are:

[0029] 1. The grouting device prevents cement slurry from flowing through the technical casing;

[0030] 2. Fill the annular channel 18 with clean water to prevent the cement slurry from flowing back to the technical casing;

[0031] 3. Set the first pressure gauge 5, the second pressure gauge 10, and the third pressure gauge 13 to monitor the pressure and determine whether the grouting channel is unobstructed.

[0032] Working principle: Before grouting, lower the grouting drill rod 15 to the bottom of the technical casing hole 19, connect the technical casing port connection device 1, the grouting channel connection device 2 and the grouting drill rod 15, connect the water pipeline to the water pipeline joint 3, and connect the grouting pipeline to the first grouting pipe joint 8 and the second grouting pipe joint 11; open the first control valve 4 and close the second control valve 9 and the third control valve 12, fill the annular channel 18 with clean water to prevent the cement slurry from flowing back into the technical casing during grouting; then close the first control valve 4 and open the second control valve 9 and the third control valve 12. Control valve 9 and the third control valve 12. After grouting starts, the cement slurry flows along the grouting channel 17 to the bottom of the technical casing hole 19 and enters the target formation. The second pressure gauge 10 and the third pressure gauge 13 are used to monitor the grouting hole pressure, and the first pressure gauge 5 is used to monitor the annular channel pressure. At the same time, by comparing the values ​​of the three pressure gauges, it is judged whether the grouting channel is unobstructed; before the end of grouting, use clean water to replace the cement slurry in the grouting channel 17 into the target formation, and then close the second control valve 9 and the third control valve 12 to hold the pressure and wait for solidification.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ground directional drilling grouting device, characterized in that: It has a technical casing port connection device, which is connected to the ground port of the technical casing through a technical casing connection male buckle. A water inlet pipe is arranged on the side of the technical casing port connection device, and a water pipe joint, a first control valve, and a first pressure gauge are installed on the water inlet pipe. The water pipe joint is connected to the water pipeline; a grouting channel connection device is inserted and installed in the technical casing port connection device, and the technical casing port connection device and the grouting channel connection device form a hole seal through a sealing flange and a fixing bolt, and the grouting channel connection device is connected to the grouting drill rod through the grouting drill rod The grouting channel connecting device is connected with a male buckle, and grouting pipes are arranged on both sides of the grouting channel connecting device, wherein the opening position of the left grouting pipe is slightly lower than that of the right grouting pipe, and the left grouting pipe is installed with a first grouting pipe joint, a second control valve, and a second pressure gauge, and the right grouting pipe is installed with a second grouting pipe joint, a third control valve, and a third pressure gauge, and the first grouting pipe joint and the second grouting pipe joint are connected with the grouting pipeline; the grouting drill rod extends into the space under the ground, the inner diameter space of the grouting drill rod is the grouting channel, and the space between the inner diameter of the technical casing and the outer diameter of the grouting drill rod is the annulus channel.

2. The ground directional drilling grouting device according to claim 1 is characterized in that: The first control valve is installed on the water inlet pipe to control the water flow rate; the second control valve and the third control valve are installed on the grouting pipe to control the slurry flow rate.

3. The ground directional drilling grouting device according to claim 1 is characterized in that: The first pressure gauge and the second pressure gauge are earthquake-resistant pressure gauges to monitor the orifice pressure; the third pressure gauge is an earthquake-resistant pressure gauge to monitor the annular space pressure.

4. The ground directional drilling grouting device according to claim 1 is characterized in that: The ground opening of the technical casing is the position where the technical casing is exposed on the ground, and the opening is a female buckle; the lower end of the technical casing opening connection device is provided with a technical casing connection male buckle, which is connected to the female buckle of the ground opening of the technical casing.

5. The ground directional drilling grouting device according to claim 1, characterized in that: The grouting drill rod is a flow channel for the slurry in the technical casing, the inner diameter space of the grouting drill rod is the grouting channel, and a grouting drill rod female buckle is arranged on the top of the grouting drill rod; the lower end of the grouting channel connecting device is provided with a grouting drill rod connecting male buckle, which is connected to the grouting drill rod female buckle.

6. The ground directional drilling grouting device according to claim 1, characterized in that: The grouting drill rod extends into the space below the ground opening of the technical casing, and the bottom of the grouting drill rod reaches the pre-set bottom opening of the technical casing hole.

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