Bedding drilling fixed-point whole-pipe hole sealing extraction device

Abstract

The utility model discloses a bedding drilling fixed-point whole-pipe hole sealing extraction device which comprises an integrated extraction hose which is horizontally arranged, a hole opening bag is arranged at the end close to a hole sealing outer opening, a hole bottom bag is arranged at the end close to the hole sealing bottom, and the extraction hose is fixed to the hole opening bag and the hole bottom bag. The extraction hose is provided with a solid pipe in parallel, one end of the solid pipe is connected with the floral pipe and inserted into the inner side of a drill hole, a connector is reserved in the solid pipe, and the inner end of the extraction hose penetrates through the hole bottom bag and is connected with the reserved connector in the solid pipe. Compared with a traditional hole sealing process, the integrated extraction hose is adopted, compared with a traditional hole sealing process, use of a sleeve and a slitting type extraction hard pipe is reduced, more material cost is saved, meanwhile, the integrated extraction hose is high in overall pressure resistance and is integrally connected with the bag, the problems that the connecting position is broken and the like are solved, the integrated extraction hose can be tripped into a hole more easily, and the hole sealing efficiency is improved. The overall design is reasonable, the extraction efficiency is improved, and the hole sealing difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal seam drilling and sealing, in particular to a fixed-point whole-tube sealing and extracting device for a coal seam drilling. Background Art

[0002] The traditional "two plugging and one injection" sealing technology for drilling holes in the layer uses multiple sections of two-inch casing 20m to 30m inside the hole mouth, and one-inch casing is installed throughout the drilling process, and the one-inch casing passes through the middle of the two-inch casing. The traditional sealing technology has the following problems:

[0003] 1. The two-inch casing used for sealing the outer section of the borehole has an inner diameter of 51mm. When the coal seam is broken and soft, it is difficult to put the two-inch casing into place, resulting in insufficient sealing length;

[0004] 2. Due to the small gap between the two-inch casing and the borehole wall, coupled with factors such as hole collapse, the amount of grouting during hole sealing is small, making it difficult to seal the borehole tightly;

[0005] 3. In the traditional sealing technology, two-inch casings are connected using two-inch elbows and two-inch short circuits. There are many joints and leaks, resulting in poor sealing effects (calculated based on 30m of external sealing, plus the joints used for the joints outside the hole, a borehole requires at least 34 joints).

[0006] Based on this, the present application proposes a fixed-point whole-tube sealing and extraction device for drilling holes in the layer to solve the above-mentioned shortcomings. Utility Model Content

[0007] The technical problem to be solved by the utility model is: how to solve the problem that the sealing of the hole caused by the current two-inch casing is difficult and has a poor effect.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] A fixed-point whole-tube sealing and extraction device for drilling a hole in a layer, comprising a horizontally arranged integrated extraction hose, a hole mouth bag being arranged at one end close to the outer opening of the sealing hole, and a hole bottom bag being arranged at one end close to the bottom of the sealing hole, wherein the extraction hose is fixed to the hole mouth bag and the hole bottom bag;

[0010] The extraction hose is arranged in parallel with a real tube, wherein one end of the real tube is connected to the flower tube and inserted into the inner side of the borehole, a connection port is reserved on the real tube, and the inner end of the extraction hose passes through the hole bottom bag and is connected to the reserved connection port on the real tube.

[0011] The present application adopts an integrated extraction hose, which reduces the use of casing and split extraction hard pipes compared to the traditional sealing process, saving more material costs. At the same time, the integrated extraction hose has high overall pressure resistance and is integrated with the bag to prevent problems such as disconnection at the connection, making it easier to lower into the borehole. The overall design is reasonable, which improves extraction efficiency and reduces the difficulty of sealing.

[0012] As a further solution of the utility model: the extraction hose adopts a six-point hose.

[0013] As a further solution of the utility model: the flower tube and the solid tube are both one-inch tubes.

[0014] As a further solution of the utility model: the inner side of the solid tube is connected to the floral tube, and the other side passes through the bag at the bottom of the hole and is connected to the plug after passing through. The plug is provided with a notch for connecting the probe tube.

[0015] As a further solution of the utility model: the hole bottom bag is connected to the hole bottom bag pipeline, wherein the other end of the hole bottom bag pipeline extends out from the hole opening.

[0016] As a further solution of the utility model: the orifice bag is connected to the orifice bag pipe, wherein the other end of the orifice bag pipe extends out from the orifice.

[0017] As a further solution of the utility model: it also includes a grouting pipe and a return grouting pipe, wherein the grouting pipe is inserted from the orifice and passes through the orifice bag and stays between the hole bottom bag and the orifice bag;

[0018] One end of the return slurry pipe is located between the hole bottom bag and the hole mouth bag, and the other end passes through the hole mouth bag.

[0019] As a further solution of the utility model: a plurality of air extraction holes are opened on the pipe of the flower tube close to the bottom of the hole, and a pointed cone is provided at the end of the flower tube close to the bottom of the hole.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The present application adopts an integrated extraction hose, which reduces the use of casing and split extraction hard pipes compared to the traditional sealing process, saving more material costs. At the same time, the integrated extraction hose has high overall pressure resistance and is integrated with the bag to prevent problems such as disconnection at the connection, making it easier to lower into the borehole. The overall design is reasonable, which improves extraction efficiency and reduces the difficulty of sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a fixed-point whole-tube hole sealing and extraction device for drilling holes in a layer according to an embodiment of the utility model;

[0023] Figure 2 This is a dimension marking diagram of a fixed-point whole-tube hole sealing and extraction device for a layer-by-layer drilling according to an embodiment of the utility model;

[0024] Description of reference numerals:

[0025] 1. Pointed cone; 2. Flower tube; 3. Solid tube; 4. Extraction hose; 5. Bottom bag; 6. Plug; 7. Orifice bag; 8. Probe tube; 9. Orifice bag pipeline; 10. Grouting pipe; 11. Return grouting pipe; 12. Bottom bag pipeline. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 A fixed-point whole-tube sealing and extraction device for drilling holes in the layer, comprising a pointed cone 1, a flower tube 2, a solid tube 3, an extraction hose 4, a bottom bag 5, a plug 6, a hole mouth bag 7, a probe tube 8, a hole mouth bag pipeline 9, a grouting pipe 10, a return grouting pipe 11 and a bottom bag pipeline 12.

[0028] The extraction hose 4 is a six-point rubber hose, and is arranged horizontally in an integrated manner. A hole mouth bag 7 is arranged at one end of the sealing section close to the outer opening, and a hole bottom bag 5 is arranged at one end of the sealing section close to the bottom of the hole. The six-point extraction hose 4 is fixedly connected to the hole mouth bag 7 and the hole bottom bag 5. The three can be designed to be an integrated connection relationship, which is convenient for subsequent lowering into the borehole.

[0029] Reference Figure 1 The pointed cone 1 is installed at one end of the flower tube 2, and the other end of the flower tube 2 is connected to the solid tube 3. The solid tube 3 has a reserved connection port for connecting a six-point extraction hose 4. The extraction hose 4 is arranged in parallel with the solid tube 3, that is, the inner end of the extraction hose 4 passes through the hole bottom bag 5 and is connected to the reserved connection port on the solid tube 3. The flower tube 2 and the solid tube 3 are both one-inch tubes, and a plurality of extraction holes are opened on the pipe of the flower tube 2 near the bottom of the hole, and the flower tube 2 and the solid tube 3 are sleeved.

[0030] Reference Figure 1 The inner side of the solid tube 3 is connected to the flower tube 2, and the other side passes through the hole bottom bag 5, and is connected to the plug 6 after passing through. The plug 6 is provided with a slot for connecting the probe tube 8.

[0031] Reference Figure 1The hole bottom bag 5 is connected to the hole bottom bag pipeline 12, wherein the other end of the hole bottom bag pipeline 12 extends out from the hole; the orifice bag 7 is connected to the orifice bag pipeline 9, wherein the other end of the orifice bag pipeline 9 extends out from the hole.

[0032] Reference Figure 1 The grouting pipe 10 is inserted from the orifice and passes through the orifice bag 7 to stay between the hole bottom bag 5 and the orifice bag 7; one end of the return grouting pipe 11 is located between the hole bottom bag 5 and the orifice bag 7, and the other end passes through the orifice bag 7.

[0033] The specific operating principles of this application are as follows:

[0034] 1. After the drilling is completed, a one-inch PVC flower pipe 2 is lowered to the bottom of the hole, leaving 22m to 24m at the hole mouth (refer to Figure 2 ), the outer opening is sealed with a new type of "two blocking and one injection" sealing bag, the "two blocking" refers to the hole opening bag 7 and the hole bottom bag 5, and the "one injection" refers to the grouting area between the two bags;

[0035] 2. Lower an inch-long flower tube 2 throughout the entire process. When the flower tube 2 is lowered to 22m to 24m, add a inch-long solid tube 3, insert the six-point extraction hose 4 into the inch-long solid tube 3 (insert 2m), use an anchoring agent to seal the middle section of the inch-long solid tube 3, and reserve about 0.5m of space for the outer section. Use the probe tube 8 to continue lowering the inch-long flower tube 2 to the bottom of the hole. At the same time, in the remaining 24m of space, set up the bottom bag 5, the return grouting pipe 11, the grouting pipe 10 and the hole mouth bag 7 in sequence, and finally pull out the probe tube 8 (the probe tube 8 is a threaded connection, and can be installed in sequence according to the length of the sealed hole), and then perform pressure grouting in sequence to complete the sealing of the hole;

[0036] 3. The new type of sealing bag six-point extraction hose 4 is inserted into the one-inch solid pipe 3 (the distance of inserting a one-inch PVC solid pipe, that is, 2m), and the distance leading out of the hole mouth is not less than 1m for easy jointing (reserved according to the actual situation on site, in principle, all boreholes are reserved with the same length to maintain a unified standard). The bottom bag 5 is lowered 22-24m from the hole mouth, and the hole mouth bag 7 is lowered 6-8m from the hole mouth. Lead out the grouting pipes of each bag and the middle section injection and return grouting pipes 11 respectively;

[0037] 4. Grouting sequence: first grout the bottom bag 5, then grout the hole bag 7, then grout the middle section grouting pipe 10, and after the middle section grouting pipe 11 grouts, pressurize the middle section grouting pipe 11. The bag grouting pressure is not less than 1MPa, and the middle section grouting pressure is not less than 1.5MPa;

[0038] 5. After the grouting cement has fully solidified, joint extraction can be carried out.

[0039] This application has undergone a large number of experiments, improvements, and independent innovative research and development. An inch casing is installed throughout the drilling process, and a six-point integral high-pressure resistant hose is used on the outer section, making it faster and more convenient to seal the hole and lower the pipe, greatly reducing the number of joints such as two-inch casing, two-inch elbows, and two-inch short connections (the "two plugging and one injection" section at the outer port is calculated as 30m, and the number of joints is reduced from 32 to 3). The grouting space is increased, and the cement slurry can fully seal the borehole tightly, greatly reducing leakage points, effectively increasing the extraction concentration and pure amount, and greatly improving the extraction efficiency.

[0040] Compared with the traditional sealing process, the present invention simplifies the sealing process, reduces the difficulty of sealing, effectively shortens the sealing time, improves the sealing rate, and improves the quality and efficiency of sealing. The present invention's new sealing process greatly reduces the number of joints such as two-inch casing, two-inch elbow, and two-inch short connection, greatly reduces the leakage points, effectively improves the extraction concentration and pure amount, and greatly improves the extraction efficiency.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixed-point whole-tube sealing and extraction device for drilling holes in the layer, characterized in that: It comprises a horizontally arranged integrated extraction hose (4), a hole mouth bag (7) is arranged at one end close to the outer opening of the sealed hole, and a hole bottom bag (5) is arranged at one end close to the bottom of the sealed hole, wherein the extraction hose (4) is fixed to the hole mouth bag (7) and the hole bottom bag (5); The extraction hose (4) is arranged in parallel with a solid tube (3), wherein one end of the solid tube (3) is connected to the flower tube (2) and inserted into the inner side of the borehole, a connection port is reserved on the solid tube (3), and the inner end of the extraction hose (4) passes through the hole bottom bag (5) and is connected to the reserved connection port on the solid tube (3).

2. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1 is characterized in that: The extraction hose (4) is a six-point rubber hose.

3. The device for sealing and extracting a hole at a fixed point in a layer drilled hole according to claim 1, characterized in that: The flower tube (2) and the solid tube (3) are both one-inch tubes.

4. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1 is characterized in that: The inner side of the solid tube (3) is connected to the flower tube (2), and the other side passes through the hole bottom bag (5), and is connected to the plug (6) after passing through. The plug (6) is provided with a notch for connecting the probe tube (8).

5. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1 is characterized in that: The hole bottom bag (5) is connected to the hole bottom bag pipeline (12), wherein the other end of the hole bottom bag pipeline (12) extends out from the hole opening.

6. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1, characterized in that: The orifice bag (7) is connected to the orifice bag pipe (9), wherein the other end of the orifice bag pipe (9) extends out from the orifice.

7. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1 is characterized in that: It also includes a grouting pipe (10) and a return grouting pipe (11), wherein the grouting pipe (10) is inserted from the orifice and passes through the orifice bag (7) to stay between the hole bottom bag (5) and the orifice bag (7); One end of the return slurry pipe (11) is located between the hole bottom bag (5) and the hole mouth bag (7), and the other end passes through the hole mouth bag (7).

8. The device for sealing and extracting a hole at a fixed point in a layer according to claim 1, characterized in that: A plurality of air extraction holes are provided on the pipe of the flower tube (2) close to the bottom of the hole, and a pointed cone (1) is provided at the end of the flower tube (2) close to the bottom of the hole.

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