Material drilling repair device based on shape memory topological grid structure

Abstract

The utility model relates to the technical field of mine gas control, and discloses a drill hole repairing device based on shape memory topological grid structure materials, which comprises a drilling machine, the output end of the drilling machine is connected with a transmission mechanism, and the transmission mechanism extends into an extraction drill hole to be connected with a front end through hole drill bit; wherein the drilling machine drives the transmission mechanism to drive the front-end through hole drill bit to rotate, so that the front-end through hole drill bit drills in the extraction drill hole, and coal cinder is discharged out of the hole through the transmission mechanism; the heating mechanism penetrates through the transmission mechanism and the front-end through hole drill bit and is sleeved with a net-shaped hole protection pipe; wherein after the heating mechanism heats the net-shaped hole protection pipe, the net-shaped hole protection pipe expands to support the collapse failure position in the extraction drill hole. The gas extraction effect can be improved, the gas treatment efficiency is improved, the gas treatment cost is reduced, and safe and efficient production of a mine is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of mine gas control, in particular to a drilling repair device based on shape memory topological grid structure material. Background Art

[0002] Coal mine gas, also known as coalbed methane, is one of the main factors threatening the safe production of coal mines. At present, the most commonly used means of gas control is to pre-extract coal seam gas by drilling holes underground. However, affected by the geological conditions of the coal seams, the boreholes will collapse to varying degrees at different stages from the completion of construction to the extraction process. On the one hand, this affects the effect of gas extraction and restricts the safe and efficient production of mines. On the other hand, it increases the investment in gas control and the cost of gas control. In order to further promote the improvement of quality and efficiency in mine gas control, it is necessary to empower gas control with science and technology and form a technology that can repair collapsed and failed boreholes. Utility Model Content

[0003] The utility model aims to provide a drilling repair device based on shape memory topological grid structure material to solve the technical problem of underground coal seam gas extraction drilling collapse failure existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a drilling repair device based on shape memory topological grid structure material, comprising:

[0005] A drilling rig, wherein the output end of the drilling rig is connected to a transmission mechanism, and the transmission mechanism extends into the extraction borehole and is connected to a front through-hole drill bit;

[0006] The drilling rig drives the transmission mechanism to drive the front through-hole drill bit to rotate, so that the front through-hole drill bit drills in the extraction borehole and discharges the coal slag out of the hole through the transmission mechanism;

[0007] A heating mechanism passes through the transmission mechanism and the front through-hole drill bit and is sleeved with a mesh hole protection tube; wherein, after the heating mechanism heats the mesh hole protection tube, the mesh hole protection tube expands to support the collapsed failure position in the extraction borehole.

[0008] Preferably, the transmission mechanism is the triangular drill rod, and is configured as an internal core drill rod, and two adjacent drill rods in the triangular drill rod are connected by threads.

[0009] Preferably, the front through-hole drill bit is connected to the starting end of the triangular drill rod via a threaded connection.

[0010] Preferably, the electromagnetic generating rod passes through the upper and lower drill rods at the rear of the drilling rig, penetrates into the through-core triangular drill rod, and passes out from the front end through-hole drill bit.

[0011] Preferably, the electromagnetic generating rod is a flexible rod.

[0012] Preferably, the heating mechanism is configured as an electromagnetic wave generating rod, the electromagnetic wave generating rod passes through the triangular drill rod and the front end through-hole drill bit, and is sleeved with a mesh hole protection tube.

[0013] The utility model discloses the following technical effects: the utility model performs point-to-point repair on collapsed and failed boreholes, thereby, on the one hand, improving the service life of the boreholes, extending the effective extraction time, and saving gas control costs; on the other hand, in the process of heating the mesh hole protection pipe by the electromagnetic wave generating rod, the coal body on the hole wall is simultaneously radiated and heated, which promotes gas desorption, further improves the gas extraction effect, and promotes safe and efficient production in mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic structural diagram of a drilling repair device based on shape memory topological grid structure material of the utility model;

[0016] Figure 2 It is a detailed structural diagram of the mesh hole-protecting tube in the utility model;

[0017] Among them, 1. Electromagnetic wave generating rod; 2. Mesh hole protection tube; 3. Front-end through-hole drill bit; 4. Extraction drilling hole; 5. Triangular drill rod; 6. Solid coal. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figure 1-Figure 2The utility model provides a drilling rig, the output end of which is connected to a transmission mechanism, which extends into the extraction borehole 4 and is connected to the front through-hole drill bit 3;

[0021] The drilling rig drives the transmission mechanism to drive the front through-hole drill bit 3 to rotate, so that the front through-hole drill bit 3 drills in the extraction borehole 4 and discharges the coal slag out of the hole through the transmission mechanism;

[0022] The heating mechanism passes through the transmission mechanism and the front end through-hole drill bit 3, and is sleeved with a mesh hole protection tube 2; wherein, after the heating mechanism heats the mesh hole protection tube 2, the mesh hole protection tube 2 expands to support the collapsed failure position in the extraction borehole 4.

[0023] The heating mechanism is configured as an electromagnetic wave generating rod 1 , which penetrates a triangular drill rod 5 and a front end through-hole drill bit 3 , and is sleeved with a mesh hole protection tube 2 .

[0024] The utility model performs point-to-point repair on collapsed and failed boreholes. On the one hand, it increases the service life of the borehole, prolongs the effective extraction time, and saves gas control costs. On the other hand, in the process of heating the mesh hole protection tube 2 by the electromagnetic wave generating rod 1, the coal body on the hole wall is simultaneously radiated and heated, which promotes gas desorption, further improves the gas extraction effect, and promotes safe and efficient production in the mine.

[0025] According to a further optimization scheme, the mesh hole protection tube 2 is formed by rolling a shape memory topological grid structure material.

[0026] This structural material has shape memory function, can expand by heating, and then maintains the same shape, and has high radial strength.

[0027] To further optimize the solution, the electromagnetic generating rod passes through the upper and lower drill rods at the rear of the drilling rig, penetrates into the through-core triangular drill rod 5, and passes out from the front through-hole drill bit 3.

[0028] According to a further optimized solution, the electromagnetic generating rod is a flexible rod.

[0029] According to a further optimized solution, the transmission mechanism is a triangular drill rod 5, which is arranged as an internal core drill rod, and two adjacent drill rods in the triangular drill rod 5 are connected by threads.

[0030] The mesh hole protection tube 2 is closely attached to the electromagnetic wave generating rod 1 by nesting. The electromagnetic generating rod covered with the mesh hole protection tube 2 passes through the upper and lower drill rods at the rear of the drilling rig, penetrates into the internal through-core triangular drill rod 5 and passes out from the front end hole of the drill bit.

[0031] The main principle is: for the collapsed and failed extraction borehole 4, first, the drilling rig uses the matching front-end through-hole drill bit 3 and triangular drill rod 5 to lower the electromagnetic wave generating rod 1 and the mesh hole protection tube 2 used to support the borehole to the collapsed and failed part of the borehole; second, the drilling rig drills into the collapsed borehole coal body in front, and uses the strong stirring force of the triangular drill rod 5 to discharge the coal slag during the drilling process to the outside of the hole, and drills until it passes through the collapsed and failed part of the borehole; third, the front-end through-hole drill bit 3 and the triangular drill rod 5 are withdrawn, and only the mesh hole protection tube 2 with the electromagnetic wave generating rod 1 embedded in it remains in the hole; fourth, the electromagnetic wave generating rod 1 is started to generate electromagnetic waves to heat the mesh hole protection tube 2, and after heating, the hole protection tube expands and deforms until it is in close contact with the hole wall and is fixed; fifth, the electromagnetic wave generating rod 1 is withdrawn, and the borehole repair is completed.

[0032] The specific use process of the utility model is as follows:

[0033] S1. Determine the collapse failure borehole;

[0034] S2, clearing the collapsed coal slag of the extraction borehole 4; the drilling rig uses the matching front-end through-hole drill bit 3 and triangular drill rod 5 to lower the electromagnetic wave generating rod 1 and the mesh hole protection pipe 2 used to support the borehole to the collapsed failure position of the borehole; the drilling rig drills the collapsed coal body in front, and uses the strong stirring force of the triangular drill rod 5 to discharge the coal slag during the drilling process to the outside of the hole, and drills until it passes through the collapsed failure position of the extraction borehole 4;

[0035] S3, repair the drilling tool and withdraw it; withdraw the front through-hole drill bit 3 and the triangular drill rod 5 from the extraction borehole 4;

[0036] S4, supporting the collapsed part of the borehole; starting the electromagnetic wave generating rod 1 to generate electromagnetic waves to heat the mesh hole protection pipe 2, and after heating, the hole protection pipe expands and deforms until it is in close contact with the hole wall and is fixed;

[0037] S5. The repair device is withdrawn and the hole is sealed.

[0038] To further optimize the scheme, in S1, by analyzing the single-hole gas pre-extraction data, the boreholes with small gas extraction pure volume and large fluctuation in extraction concentration among similar boreholes are determined to be collapsed and failed boreholes.

[0039] To further optimize the solution, in S3, the reverse step of the drilling operation is performed, the front end through-hole drill bit 3 and the triangular drill rod 5 are withdrawn, and only the mesh hole protection tube 2 in which the electromagnetic wave generating rod 1 is nested is left in the extraction borehole 4.

[0040] To further optimize the solution, in S5, the electromagnetic generating rod is closed and then slowly extracted from the extraction borehole 4, and then the extraction borehole 4 is sealed and continuously extracted according to the gas extraction requirements.

[0041] The directions or positional relationships indicated by “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0042] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A drilling repair device based on shape memory topological grid structure material, characterized in that: include: A drilling rig, wherein the output end of the drilling rig is connected to a transmission mechanism, and the transmission mechanism extends into the extraction borehole (4) and is connected to a front through-hole drill bit (3); The drilling machine drives the transmission mechanism to drive the front through-hole drill bit (3) to rotate, so that the front through-hole drill bit (3) drills in the extraction borehole (4) and discharges the coal slag out of the hole through the transmission mechanism; A heating mechanism passes through the transmission mechanism and the front through-hole drill bit (3), and is sleeved with a mesh hole protection tube (2); wherein, after the heating mechanism heats the mesh hole protection tube (2), the mesh hole protection tube (2) expands to support the collapsed failure position in the extraction borehole (4).

2. According to claim 1, a drilling repair device based on shape memory topological grid structure material is characterized by: The transmission mechanism comprises a triangular drill rod (5), wherein the triangular drill rod (5) is arranged as an internal core drill rod, and two adjacent drill rods in the triangular drill rod (5) are connected via a thread.

3. The drilling repair device based on shape memory topological grid structure material according to claim 2 is characterized by: The front through-hole drill bit (3) is connected to the starting end of the triangular drill rod (5) via a threaded connection.

4. The drilling repair device based on shape memory topological grid structure material according to claim 3 is characterized by: It also includes an electromagnetic generating rod, which penetrates into the core-through triangular drill rod (5) through the upper and lower drill rods at the rear of the drilling machine and passes through the front through-hole drill bit (3).

5. The drilling repair device based on shape memory topological grid structure material according to claim 4 is characterized in that: The electromagnetic generating rod is a flexible rod.

6. The drilling repair device based on shape memory topological grid structure material according to claim 5 is characterized by: The heating mechanism is configured as an electromagnetic wave generating rod (1), the electromagnetic wave generating rod (1) penetrates the triangular drill rod (5) and the front end through-hole drill bit (3), and is sleeved with a mesh hole protection tube (2).

Images