CN219953238U - Drilling device penetrating goaf - Google Patents
Drilling device penetrating goaf Download PDFInfo
- Publication number
- CN219953238U CN219953238U CN202320530841.8U CN202320530841U CN219953238U CN 219953238 U CN219953238 U CN 219953238U CN 202320530841 U CN202320530841 U CN 202320530841U CN 219953238 U CN219953238 U CN 219953238U
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- China
- Prior art keywords
- drilling
- sleeve
- goaf
- casing
- traversing
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- 238000005553 drilling Methods 0.000 title claims abstract description 125
- 230000000149 penetrating effect Effects 0.000 title abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 10
- 239000011435 rock Substances 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000011835 investigation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a drilling device penetrating through a goaf, and belongs to the technical field of geological investigation. The drilling device crossing the goaf comprises: a sleeve; the drilling mechanism is movably arranged in the sleeve, the drilling end of the drilling mechanism is close to one end part of the sleeve, and one end of the drilling mechanism away from the drilling end extends out of the sleeve through the other end part of the sleeve; the clamping mechanism is arranged at one end of the sleeve, which is far away from the drilling end, and is clamped with the sleeve and connected with the drilling mechanism. By arranging the clamping mechanism, the drilling mechanism can drive the casing pipes to drill together during drilling, so that the casing pipes are conveniently lowered; meanwhile, when the goaf is traversed, the casing pipe can form effective isolation and protection for the drilling mechanism; after the device drills into the rock stratum below the goaf, a drilling mechanism is provided, and the sleeve is reserved in the hole, so that the follow-up construction of the conventional drilling in the next step is facilitated, and the problem of difficult construction when the drilled hole passes through the goaf is solved.
Description
Technical Field
The utility model relates to the technical field of geological exploration, in particular to a drilling device penetrating through a goaf.
Background
When the geological survey area construction drilling passes through the goaf, the stratum at the top of the goaf is loose and broken due to the fact that the stratum at the top of the goaf is already fallen, the condition that the wall of the drilling hole collapses is very easy to occur, meanwhile, the stratum is lost, a large amount of drilling fluid is lost during drilling, drilling burying and drilling clamping accidents can occur due to the fact that the drilling fluid is lost, and the drilling is seriously scrapped. The existing drilling method for drilling holes mainly comprises the steps of drilling holes, then, putting down the sleeve to isolate the goaf, wherein due to the reasons, drilling construction difficulty is very high, accidents frequently occur, and when the sleeve is put down, the sleeve is often put down to the midway and blocked due to the instability of the wall of the drilled hole, so that the drilling is scrapped, and economic loss is huge.
Disclosure of Invention
The utility model provides a drilling device penetrating through a goaf, which is used for solving the problems that in the prior art, when a conventional drilling device penetrates through the goaf to perform drilling construction, the construction difficulty is high and the casing is not smooth.
The utility model provides a drilling device penetrating through a goaf, which comprises:
a sleeve;
the drilling mechanism is movably arranged in the sleeve, the drilling end of the drilling mechanism is close to one end part of the sleeve, and one end of the drilling mechanism away from the drilling end extends out of the sleeve through the other end part of the sleeve;
the clamping mechanism is arranged at one end of the sleeve, which is far away from the drilling end, and is in clamping connection with the sleeve, and the clamping mechanism is connected with the drilling mechanism.
According to the drilling device penetrating through the goaf, the drilling mechanism comprises the drill bit, the drill collar and the drill rod which are sequentially connected, the drill bit is the drilling end of the drilling mechanism, the drill bit and the drill collar are located in the casing, and one end of the drill rod extends out of the casing.
According to the drilling device penetrating through the goaf, the protruding blocks are arranged at one end, close to the clamping mechanism, of the sleeve, and the protruding blocks are evenly distributed on the peripheral wall of the sleeve.
According to the drilling device penetrating through the goaf, the clamping mechanism comprises the end cover and the shifting blocks, the end cover is fixedly sleeved on the drill rod, the shifting blocks are uniformly distributed at the edge of the lower end face of the end cover, the end cover is abutted with the end face of the sleeve, and the shifting blocks are in nested connection with the protruding blocks.
According to the drilling device for penetrating through the goaf, the thickness of the poking block is consistent with that of the protruding block in the radial direction of the sleeve.
According to the drilling device penetrating through the goaf, provided by the utility model, the device further comprises a reinforcing mechanism, wherein the reinforcing mechanism is arranged at one end of the sleeve close to the drill bit.
According to the drilling device penetrating through the goaf, the reinforcing mechanism comprises the inner rib plates and the outer rib plates, wherein the inner rib plates are uniformly distributed on the inner peripheral wall, close to the end portion, of the sleeve, and the outer rib plates are uniformly distributed on the outer peripheral wall, close to the end portion, of the sleeve.
According to the drilling device for penetrating through the goaf, the thickness of the outer rib plate in the radial direction of the sleeve is larger than that of the poking block.
According to the drilling device for penetrating through the goaf, the drill bit, the inner rib plate and the outer rib plate are all provided with the hard alloy heads at the end parts far away from one end of the clamping mechanism.
According to the drilling device for penetrating through the goaf, the clamping mechanism is arranged, so that the drilling mechanism can drive the casing pipes to drill together during drilling, and the casing pipes are smoothly lowered; meanwhile, when the goaf is traversed, the casing pipe can form effective isolation and protection for the drilling mechanism; after the device drills into the rock stratum below the goaf, a drilling mechanism is provided, and the sleeve is reserved in the hole, so that the follow-up construction of the conventional drilling in the next step is facilitated, and the problem of difficult construction when the drilled hole passes through the goaf is solved. The drilling device has the characteristics of simple structure, simplicity and reliability in operation, low processing and manufacturing cost and the like, and has strong applicability.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a goaf traversing drilling apparatus provided by the present utility model;
FIG. 2 is a schematic top view of a dial-bump connection.
Reference numerals:
100. a sleeve; 101. a bump;
200. a drilling mechanism; 201. a drill bit; 202. a drill collar; 203. a drill rod;
300. a clamping mechanism; 301. an end cap; 302. a shifting block;
400. a reinforcing mechanism; 401. an inner rib plate; 402. an outer rib plate;
500. a cemented carbide tip.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A goaf-traversing drilling apparatus of the present utility model is described below in conjunction with fig. 1-2, comprising: casing 100, drilling mechanism 200, engagement mechanism 300, and reinforcement mechanism 400.
The drilling mechanism 200 is movably arranged in the sleeve 100, the drilling end of the drilling mechanism 200 is close to one end part of the sleeve 100, and one end of the drilling mechanism 200 away from the drilling end extends out of the sleeve 100 through the other end part of the sleeve 100;
specifically, the drilling mechanism 200 comprises a drill bit 201, a drill collar 202 and a drill rod 203 which are sequentially connected, wherein screw threads are adopted to connect the drill bit 201 with the drill collar 202 and between the drill collar 202 and the drill rod 203; the drill bit 201 is the drilling end of the drilling mechanism 200, the drill bit 201 and the drill collar 202 are positioned in the casing 100, the lower end of the drill bit 201 slightly exposes the casing 100, and one end of the drill rod 203 extends out of the casing 100.
The end of the sleeve 100 near the clamping mechanism 300 is provided with protruding blocks 101, the protruding blocks 101 are uniformly distributed on the peripheral wall of the sleeve 100, and the protruding blocks 101 can be fixed on the sleeve 100 in a welding mode.
The clamping mechanism 300 is arranged at one end of the sleeve 100 away from the drilling end, the clamping mechanism 300 is clamped with the sleeve 100, and the clamping mechanism 300 is connected with the drilling mechanism 200;
specifically, the clamping mechanism 300 includes an end cover 301 and a shifting block 302, the end cover 301 is fixedly sleeved on the drill rod 203, the shifting block 302 is uniformly distributed at the edge of the lower end surface of the end cover 301, the shifting block 302 can be fixedly connected with the end cover 301 in a welding manner, the end cover 301 is abutted with the end surface of the sleeve 100, the shifting block 302 and the protruding block 101 are in nested connection, i.e. the shifting block 302 and the protruding block 101 can be mutually separated;
in this embodiment, the number of the shifting blocks 302 is identical to the number of the protruding blocks 101, which may be six, eight, or other even number greater than six, and is reasonably selected according to the actual diameter of the sleeve 100;
further, the dial 302 conforms to the thickness of the boss 101 in the radial direction of the sleeve 100; in addition, the heights of the dial 302 and the boss 101 may be set to be uniform so as to be uniformly stressed.
The reinforcing mechanism 400 is disposed at one end of the casing 100 near the drill bit 201; specifically, the reinforcing mechanism 400 includes an inner rib plate 401 and an outer rib plate 402, the inner rib plate 401 is uniformly distributed on the inner peripheral wall of the sleeve 100 near the end, and the outer rib plate 402 is uniformly distributed on the outer peripheral wall of the sleeve 100 near the end; the reinforcement mechanism 400 can further strengthen the strength of the drilling end of the whole device;
the outer rib plates 402 are in one-to-one correspondence with the inner rib plates 401, the number of the outer rib plates 402 and the number of the inner rib plates 401 are all an even number greater than or equal to six, the thickness of the outer rib plates 402 in the radial direction of the sleeve 100 is greater than that of the shifting block 302, and similarly, the outer wall of the end cover 301 is closer to the axis of the sleeve 100 than the outer wall of the outer rib plates 402;
in this embodiment, the thickness of the outer rib 402 is slightly greater than the thickness of the dial block 302 or the bump 101, so that the sleeve 100 and the end cap 301 can pass through the drilled hole; the thickness of the inner web 401 is much smaller than the thickness of the outer web 402, and the diameter of the drill bit 201 may be considered to be substantially the same as the inner diameter of the sleeve 100, so as to reduce the gap between the drill bit 201 and the inner wall of the sleeve 100; the outer diameter of the drill bit 201 is movably attached to the inner rib plate 401 so as to reduce the connecting gap between the drill bit 201 and the inner rib plate, and prevent large-particle rock from entering the sleeve 100 from the gap during drilling;
the end parts of the drill bit 201, the inner rib plate 401 and the outer rib plate 402, which are far away from one end of the clamping mechanism 300, are respectively provided with a hard alloy head 500, and the hard alloy heads 500 can be fixed on corresponding parts in an inlaid mode so as to complete rock breaking work during drilling.
The workflow of the utility model comprises the following steps:
the drilling mechanism 200 is put into the sleeve 100 after being connected, and the shifting block 302 is nested and clamped with the convex block 101; before the method, the accurate depth of the goaf is obtained according to geological data during mining, or the position and the depth of the goaf are judged according to the situation that stratum fracture zones are encountered during drilling, the length of the sleeve 100 is selected to be at least 20m greater than the depth of the goaf, and then a conventional drilling mode is adopted to drill to the position about 10m above the goaf;
lowering the casing 100 and the drilling mechanism 200 into a borehole in the upper part of the goaf, so that the drilling ends of the casing 100 and the drilling mechanism 200 are about 10m away from the goaf;
starting drilling work, wherein the drill rod 203 drives the sleeve 100 to rotate together, and the hard alloy heads 500 on the inner rib plate 401, the outer rib plate 402 and the drill bit 201 jointly crush rock strata, so that simultaneous drilling of the sleeve 100 and the drilling mechanism 200 is realized; during drilling, under the further action of the gravity of the drill collar 202, the end cover 301 generates certain downward pressure on the sleeve 100, so that the rebound phenomenon of the drill bit 201 is reduced, and the stability of the whole device in the drilling process is realized; meanwhile, during drilling, the conventional slurry drilling method is replaced by an air foam method for drilling;
after the casing 100 and the drilling mechanism 200 enter the goaf, drilling is continued along the rock stratum below the goaf, and the drilling is stopped when the preset depth is about 8-12 m, preferably about 10m, the drilling mechanism 200 is lifted out of the casing 100, the casing 100 is left in the hole, at the moment, two ends of the casing 100 are respectively positioned in the rock stratum on the upper side and the lower side of the goaf, namely, two ends of the casing 100 are respectively approximately 10m long in the rock stratum, and effective isolation is formed for the goaf, so that the function of protecting the drilling mechanism 200 and the hole wall is achieved;
the conventional drill bit, which is lowered into the casing 100 a small step, continues to drill until the hole is completed.
The goaf is an underground space formed after the working face of the coal bed is mined, and has a certain depth and thickness. Because the roof of the upper coal seam collapses, the goaf is filled with loose rock fragments, a slurry conventional drilling method can be adopted before drilling holes pass through the goaf, when the slurry is seriously leaked to the top of the goaf, the conventional drilling method is difficult to continue construction, then the device is put into the drilling holes, meanwhile, the air foam method is used for drilling, after the device passes through the bottom of the goaf, drilling is continued for about 10m, drilling is stopped, a drill rod 203, a drill collar 202 and a drill bit 201 in the holes are put in the holes, the sleeve 100 is reserved in the holes, effective isolation and protection are formed for the goaf, and then a small-stage drill bit is put into the sleeve 100 to continue drilling until a final hole. If the second goaf is encountered in the drilling process, repeating the method, firstly performing isolation protection on the goaf, and then resuming the conventional drilling method until the drilling construction is finished.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. A drilling apparatus for traversing a goaf, comprising:
a sleeve;
the drilling mechanism is movably arranged in the sleeve, the drilling end of the drilling mechanism is close to one end part of the sleeve, and one end of the drilling mechanism away from the drilling end extends out of the sleeve through the other end part of the sleeve;
the clamping mechanism is arranged at one end of the sleeve, which is far away from the drilling end, and is in clamping connection with the sleeve, and the clamping mechanism is connected with the drilling mechanism.
2. The goaf-traversing drilling device according to claim 1, wherein the drilling mechanism comprises a drill bit, a drill collar and a drill rod which are sequentially connected, the drill bit being the drilling end of the drilling mechanism, the drill bit and the drill collar being located within the casing, one end of the drill rod extending outside the casing.
3. The goaf-traversing drilling device according to claim 2, wherein the casing is provided with protrusions at an end thereof adjacent to the engagement mechanism, the protrusions being uniformly distributed on an outer peripheral wall of the casing.
4. A goaf-traversing drilling device as claimed in claim 3, wherein the engagement means comprises an end cap and a poking block, the end cap is fixedly sleeved on the drill rod, the poking blocks are uniformly distributed at the edge of the lower end face of the end cap, the end cap abuts against the end face of the sleeve, and the poking block and the protruding block are in nested connection.
5. The goaf-traversing drilling device as recited in claim 4, wherein the dial-up block is of uniform thickness as the boss in a radial direction of the casing.
6. The goaf-traversing drilling device according to claim 5, further comprising a reinforcing mechanism disposed at an end of the casing proximate the drill bit.
7. The goaf-traversing drilling device according to claim 6, wherein the reinforcing mechanism comprises inner rib plates and outer rib plates, the inner rib plates are uniformly distributed on an inner peripheral wall of the sleeve near the end, and the outer rib plates are uniformly distributed on an outer peripheral wall of the sleeve near the end.
8. The goaf-traversing drilling device according to claim 7, wherein the thickness of the outer rib plate in the radial direction of the sleeve is greater than the thickness of the dial block.
9. The goaf-traversing drilling device according to claim 7, wherein the drill bit, the inner rib plate and the outer rib plate are each provided with a cemented carbide head at an end portion remote from one end of the engagement mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320530841.8U CN219953238U (en) | 2023-03-10 | 2023-03-10 | Drilling device penetrating goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320530841.8U CN219953238U (en) | 2023-03-10 | 2023-03-10 | Drilling device penetrating goaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953238U true CN219953238U (en) | 2023-11-03 |
Family
ID=88553476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320530841.8U Active CN219953238U (en) | 2023-03-10 | 2023-03-10 | Drilling device penetrating goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953238U (en) |
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2023
- 2023-03-10 CN CN202320530841.8U patent/CN219953238U/en active Active
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