CN213269797U - Drill bit for fault fracture zone drilling - Google Patents
Drill bit for fault fracture zone drilling Download PDFInfo
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- CN213269797U CN213269797U CN202021239523.9U CN202021239523U CN213269797U CN 213269797 U CN213269797 U CN 213269797U CN 202021239523 U CN202021239523 U CN 202021239523U CN 213269797 U CN213269797 U CN 213269797U
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Abstract
The utility model provides a broken drill bit for taking drilling of fault belongs to drill bit technical field. The drill bit body is a cone-shaped pipe body, a plurality of drill teeth are arranged on the outer wall of the drill bit body, a plurality of sliding grooves are formed in the inner side wall of the drill bit body, wedge-shaped keys which slide up and down along the sliding grooves are arranged in the sliding grooves, the upper end of the drill bit body is connected with a top plate, and a clamping joint is fixedly connected to the center of the upper end of the top plate. The utility model provides a drill bit for drilling in fault fracture zone, which improves the speed of the drill bit in the drilling process by setting the drill bit body as a conical pipe body, and the drill teeth are arranged on the outer wall to reduce the resistance in the tunneling process; the wedge-shaped keys are arranged on the inner side wall, so that rock soil cannot fall off, the integrity of a core body sample is ensured, and the accuracy of later observation and detection is improved; and simple structure is reasonable, and workable, and the ground core sample of taking out that can be convenient draws ground core in-process at the broken area of fault, has practical value.
Description
Technical Field
The utility model relates to a drill bit technical field, concretely relates to broken drill bit for area drilling of fault.
Background
The fault fracture zone is a special loose rock-soil mass, the maximum resistance to seepage is called the impervious strength, and its value can be expressed in terms of critical specific drop and failure specific drop. Dividing the critical ratio drop or the damage ratio drop by a safety coefficient selected by considering various factors to obtain an allowable ratio drop; and comparing the allowable specific drop with the seepage hydraulic specific drop, wherein the conclusion can be used as a main basis for judging whether the seepage deformation occurs, and the original sample collection and the field test are difficult or difficult when the fault fracture zone rock-soil body is underwater, particularly when the covering layer is thick.
In order to find out the leakage and the infiltration stability characteristics of the fault zone, a drilling infiltration deformation tester (device) is adopted to obtain the infiltration failure ratio drop of the fault zone through a field drilling infiltration deformation test.
A pair of main holes and observation holes are arranged at each test point, the distance between the two holes is 2m, the test is carried out in a segmented mode from top to bottom along with the hole depth, and the test segment length is generally 5-10 m. A certain water head sequence of high-pressure water flow is pressed in the main hole test section, and meanwhile, the flow rate, the water level change, the water turbidity degree and the like of the main hole and the observation hole are observed. When the pressure reaches a certain high water head, fine-grained substances in the rock mass are taken away by the seepage water flow, and seepage deformation occurs until the structure of the rock mass is destroyed, at the moment, the pressure around the test section of the main hole is released, the water flow during pressing in the main hole is suddenly increased, and the water level or the flow of the corresponding observation hole is obviously increased. Therefore, an inflection point is obtained on the curve of the relation between the relevant pressure and the flow, and the damage rate drop of the penetration damage of the test section is obtained.
The drilling of main bore, inspection hole is dug and is needed to use hollow bit, and hollow bit can take out the rock stratum core sample, can observe rock stratum structure etc. originally through the core sample, but present hollow bit coring is inconvenient, and the drill bit proposes the in-process, and rock stratum sample core drops easily, and all is scattered garrulous when taking out rock stratum sample core to can not audio-visually observe soil layer structure.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a broken drill bit for area drilling of fault.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a broken drill bit of driling in area of fault, includes the drill bit body, the drill bit body is the opening downwards, and top-down diameter taper pipe body that reduces gradually, drill bit body outer wall is equipped with a plurality of brill teeth, the inside wall of drill bit body is equipped with a plurality of spouts, the spout is followed the inside wall direction of drill bit body extends to be arranged, the spout orientation the internal center of taper pipe forms the side opening, be equipped with in the spout along the spout gliding wedge key from top to bottom, drill bit body upper end is connected with the roof, roof upper end center department fixedly connected with joint.
Preferably, the outer wall of the drill bit body is further provided with a plurality of slag discharge grooves, and the slag discharge grooves and the drill teeth are arranged at intervals.
Preferably, the wedge key includes inclined plane and vertical face, the inclined plane towards the side end opening of spout to along the inside wall from bottom to top direction setting of drill bit body.
Preferably, the vertical surface is open to a side end of the chute and is provided below the inclined surface.
Preferably, the top end of the clamping joint is provided with a through hole, and the through hole penetrates through the clamping joint and the top plate from top to bottom in sequence.
Preferably, the lower end of the drill bit body is provided with a plurality of cutting teeth.
Preferably, the upper end of the outer wall of the drill bit body is also provided with a plurality of exhaust holes.
Preferably, the upper end of the drill body is fixedly connected with the top plate through a bolt.
Preferably, the drill teeth are in a triangular pyramid configuration.
Preferably, the teeth are located at 1/3 from the lower end of the bit body.
The utility model has the advantages that:
the utility model provides a drill bit for drilling in fault fracture zone, through setting the drill bit body into the conical tube body with the diameter gradually reduced from top to bottom, the cross section of the lower end of the drill bit body is smaller so as to improve the speed of the drill bit in the drilling process, and the drill teeth are arranged on the outer wall of the drill bit body, in the tunneling process, rock soil around the drill bit body can be drilled, thereby reducing the resistance in the tunneling process;
the utility model provides a fault broken zone drilling drill bit sets up the wedge key on the drill bit body inside wall, after rock fills up the drill bit inner cavity, in the in-process of lifting upwards, rock can incline left or right, and the rock of slope slides down in-process, drives the wedge key and slides down to block the rock, makes the rock can not drop, and the drill bit body can be in order to carry out the hole with the rock, thereby guarantees the integrality of the rock core sample of acquireing, improves the accuracy of later stage observation and detection;
the utility model provides a broken for area drilling drill bit of fault's simple structure is reasonable, and workable, can be convenient take out ground core sample, and can not harm drill bit and attached equipment, draw ground core in-process at the broken area of fault, have practical value.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a drill bit for fault fracture zone drilling according to the present invention;
fig. 2 is an internal structure diagram of the drill bit for fault fracture zone drilling according to the present invention.
Detailed Description
The embodiments of the present invention will be described with reference to the accompanying drawings and preferred embodiments, and other advantages and effects of the invention will be easily understood by those skilled in the art from the disclosure in the specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
As shown in fig. 1 and 2, a drill bit for drilling in fault fracture zone, including the drill bit body, the drill bit body is the opening downwards, and top-down diameter taper pipe body 1 that gradually reduces, the drill bit body outer wall is equipped with a plurality of brill teeth 2, the inside wall of drill bit body is equipped with a plurality of spouts 3, spout 3 extends along the inside wall direction of drill bit body and arranges, spout 3 forms the side opening towards the internal center of taper pipe, be equipped with in the spout 3 along spout gliding wedge key 4 from top to bottom, drill bit body upper end is connected with roof 5, roof 5 upper end center department fixedly connected with joint 6.
The drill bit body is a conical pipe body with the diameter gradually reduced from top to bottom, and the cross section of the lower end of the drill bit body is smaller, so that the speed of the drill bit in the drilling process can be increased. The drill bit creeps into the in-process, fills up the inside cavity of drill bit after the ground, to lifting the in-process, and the ground can incline left or right, and the ground of slope slides down the in-process, drives the wedge key and slides down to block the ground, make the ground can not drop, the drill bit body alright with carry out the hole with the rock soil.
The outer wall of the drill bit body is further provided with a plurality of slag discharge grooves 7, and the slag discharge grooves 7 and the drill teeth 2 are arranged at intervals. The slag discharge groove provides a channel for redundant rock stratum slag in the process of tunneling the drill bit body, and the tunneling resistance is reduced.
The wedge key 4 comprises an inclined surface 8 and a vertical surface 9, wherein the inclined surface 8 faces the side end opening of the sliding chute and is arranged along the inner side wall of the drill bit body from bottom to top. The vertical surface 9 is open toward the side end of the chute and is provided below the inclined surface 8. The inclined plane is arranged towards the side end opening of the sliding groove, the inclined plane is arranged in an outward inclined mode along the inner side wall of the drill bit body from bottom to top, inclined rock soil can be trapped into a groove formed by the inclined plane of the wedge-shaped key in the lifting process of the drill bit body, and the wedge-shaped key enables the rock soil to be clamped more tightly. The vertical face of wedge key, vertical face are arranged towards the side end opening of spout, and arrange the below on the inclined plane, make like this when the drill bit body lifts, and the contact surface of wedge key and ground is bigger, and what ground was blocked is more steady for the wedge key is difficult for wearing and tearing, has prolonged the life of wedge key.
The top end of the clamping head 6 is provided with a through hole 10 which sequentially penetrates through the clamping head and the top plate from top to bottom.
The lower end of the drill body is provided with a plurality of cutting teeth 11. Cutting teeth are used to excavate rock.
The upper end of the outer wall of the drill bit body is also provided with a plurality of exhaust holes 12. The interior of the conical pipe body is hollow, the interior of the conical pipe body is filled with air in an initial state, rock soil is gradually filled into the conical pipe body in the tunneling process, the interior air can be compressed, extra resistance is added for tunneling, the exhaust holes can provide a passage for the interior air, the interior air is gradually exhausted in the tunneling process, and the resistance of the interior air to the tunneling process is effectively reduced.
The upper end of the drill bit body is fixedly connected with the top plate through a bolt 13. Along with the extension of the tunneling depth, rock soil can be filled in the drill bit body, the drill bit body is withdrawn from the drill hole, the drill bit body is withdrawn together with the rock soil core body sample, the drill bit body carrying the rock soil core body sample is horizontally placed on the ground or a working platform, the bolt is unscrewed, and the top plate is opened, so that the complete core body sample can be obtained.
The drill teeth 2 are in a triangular pyramid configuration. The teeth 2 are located at 1/3 from the lower end of the bit body. The drill teeth are arranged on the outer wall of the drill bit body, and rock soil around the drill bit body can be drilled away in the tunneling process, so that resistance in the tunneling process is reduced.
The utility model provides a broken drill bit that takes drilling of fault, in the actual operation process, install the drill bit on the rig through the joint, dig out the ground through the cutting teeth of drill bit lower extreme, make the ground get into in the inner chamber of drill bit body, be full of this internal back of drill bit when the ground, withdraw from drilling with the drill bit body, withdraw from the in-process at the drill bit body, the ground of slope can be absorbed in the recess that wedge key inclined plane formed, make the wedge key card the ground tighter, thereby guarantee the integrality of ground core sample, after the drill bit body will carry ground core sample to withdraw from, keep flat in ground or work platform, unscrew the bolt, open the roof, can obtain complete core sample, then observe and detect it.
The utility model provides a broken drill bit for taking drilling of fault is through establishing the drill bit body into the conical body that top-down diameter reduces gradually for the lower extreme cross section of drill bit body is less, in order to improve the speed of drill bit at the in-process of creeping into, and sets up on the outer wall of drill bit body and bore the tooth, at the tunnelling in-process, can bore away the ground around the drill bit body, thereby reduces the resistance of tunnelling in-process. Simultaneously, set up the wedge key on the drill bit body inside wall, fill the drill bit inside cavity back when the ground, to lifting the in-process, the ground can incline left or right, and the ground of slope slides down the in-process, drives the wedge key and slides down to block the ground, make the ground can not drop, the drill bit body alright with carry out the hole with the rock soil outside, thereby guarantee the integrality of the ground core sample of acquireing, improve the accuracy of later stage observation and detection. The utility model provides a broken for area drilling drill bit of fault's simple structure is reasonable, and ground core sample takes out that can be convenient draws ground core in-process at the broken area of fault, has practical value.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The utility model provides a broken drill bit of driling in area of fault, includes the drill bit body, its characterized in that, the drill bit body is the opening downwards, and the drill bit body is the toper body of top-down diameter reduction gradually, drill bit body outer wall is equipped with a plurality of brill teeth, the inside wall of drill bit body is equipped with a plurality of spouts, the spout is followed the inside wall direction of drill bit body extends to be arranged, the spout orientation the toper body internal center forms the side opening, be equipped with in the spout along the spout gliding wedge key from top to bottom, drill bit body upper end is connected with the roof, roof upper end center department fixedly connected with joint.
2. The drill bit for drilling in the fault fracture zone as claimed in claim 1, wherein the outer wall of the drill bit body is further provided with a plurality of slag discharge grooves, and the slag discharge grooves and the drill teeth are arranged at intervals.
3. The bit for drilling a fault-breaking zone according to claim 1, wherein the wedge key includes an inclined surface and a vertical surface, the inclined surface being open to a side end of the chute and being provided along an inner side wall of the bit body in a direction from bottom to top.
4. The bit for fault-breaking zone drilling according to claim 3, wherein the vertical surface is open to a side end of the chute and is provided below the inclined surface.
5. The drill bit for drilling in a fault fracture zone as claimed in claim 1, wherein a through hole is formed at the top end of the clamping head, and the through hole penetrates through the clamping head and the top plate from top to bottom in sequence.
6. The bit for drilling a fault-breaking zone of claim 1, wherein the lower end of the bit body is provided with a plurality of cutting teeth.
7. The bit for drilling a fault-breaking zone as claimed in claim 1, wherein a plurality of exhaust holes are further formed in the upper end of the outer wall of the bit body.
8. The bit for drilling a fault-breaking zone of claim 1, wherein the upper end of the bit body is fixedly connected with the top plate through a bolt.
9. The bit for use in drilling a fault-breaking zone of claim 1, wherein the drill teeth are of triangular pyramid configuration.
10. The belt drill bit of claim 1, wherein the teeth are positioned 1/3 from the lower end of the bit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021239523.9U CN213269797U (en) | 2020-06-30 | 2020-06-30 | Drill bit for fault fracture zone drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021239523.9U CN213269797U (en) | 2020-06-30 | 2020-06-30 | Drill bit for fault fracture zone drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213269797U true CN213269797U (en) | 2021-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021239523.9U Active CN213269797U (en) | 2020-06-30 | 2020-06-30 | Drill bit for fault fracture zone drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213269797U (en) |
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2020
- 2020-06-30 CN CN202021239523.9U patent/CN213269797U/en active Active
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