CN213710969U - Rotary excavating mine type karst cave extrusion drill bit for karst development area - Google Patents
Rotary excavating mine type karst cave extrusion drill bit for karst development area Download PDFInfo
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- CN213710969U CN213710969U CN202021322731.5U CN202021322731U CN213710969U CN 213710969 U CN213710969 U CN 213710969U CN 202021322731 U CN202021322731 U CN 202021322731U CN 213710969 U CN213710969 U CN 213710969U
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Abstract
The utility model relates to the technical field of rotary excavating filling pile karst cave treatment, and discloses a rotary excavating mine type karst cave extrusion drill bit in a karst development area, which comprises a connecting section, a straight hole diameter-protecting section and an extrusion section, wherein the connecting section, the straight hole diameter-protecting section and the extrusion section are sequentially and fixedly connected from top to bottom; when a karst cave is met, the rotary drilling rig is connected with a mine type extrusion drill bit, slow pressure drilling is carried out in a pile hole, the drill bit is used for simultaneously extruding a backfill layer in the hole downwards and transversely towards the bottom and the side wall of the hole through a downward pressure device of the rotary drilling rig in the downward rotary drilling process, so that a mixture of rubbles and clay is filled into the karst cave, a new retaining wall structure is formed in the hole through repeated backfilling and extrusion operations, the karst cave section is ensured to be filled and stabilized, the karst cave can be effectively filled through repeated backfilling and extrusion, hole collapse and slurry leakage are prevented, and the next step of drilling is ensured.
Description
Technical Field
The patent of the utility model relates to a dig the technical field that bored concrete pile karst cave was handled soon, particularly, relate to karst development area and dig land mine formula karst cave extrusion drill bit soon.
Background
The cast-in-place pile is constructed in a karst development area, generally, a percussion or rotary drilling machine is adopted to drill for hole forming, when in percussion drilling, a cross hammer is used for impact extrusion and crushing a stratum, and drilling slag is returned upwards through mud circulation; when a karst cave is met, firstly, a mixture of the rubble and the clay is backfilled, then impact extrusion is carried out by using a hammer, the mixture of the rubble and the clay is filled into the karst cave, a complete hole wall is formed again, and punching and drilling have certain advantages when the karst cave is processed, but in the drilling of an upper soil layer, the impact construction speed is low, the mud quantity is large, and the field civilization construction condition is poor.
In order to improve the drilling efficiency, the rotary drilling rig is also frequently used for construction of a karst cave pile hole in a karst development area, and the high efficiency of rotary drilling on a soil layer section is fully exerted; however, for the drilling of the karst cave section, the rotary drilling rig lacks an impact function, so that the karst cave processing capacity is weaker, and a drill bit which can process the karst cave in the karst development area after being connected with the rotary drilling rig is lacked.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a karst development district digs land mine formula solution cavity extrusion drill bit soon, aims at solving prior art, lacks one kind and can carry out the problem of the drill bit handled to karst development district solution cavity after digging the rig soon and being connected.
The utility model discloses a realize like this, karst development area digs land mine formula karst cave extrusion drill bit soon, including be used for with dig linkage segment, straight hole guarantor section and the extrusion section that the rig is connected soon, linkage segment, straight hole guarantor section and extrusion section top-down fixed connection in proper order.
Furthermore, the connecting section is in a round table shape and is arranged in a small-upper-part and large-lower-part manner.
Further, the diameter-protecting section of the straight hole is cylindrical.
Further, the diameter of the straight hole diameter-keeping section is equal to the design diameter of the pile hole.
Further, the extrusion section is in a round table shape.
Further, the extrusion section is arranged in a large-size mode and a small-size mode.
Further, the mine extrusion drill bit is arranged in a completely closed shape.
Further, the land mine type extrusion drill bit is welded by a steel plate.
Further, the thickness of the steel plate is 2 cm.
Further, the inside of the mine type extrusion drill bit is hollow.
Compared with the prior art, the utility model provides a karst development area digs land mine formula solution cavity extrusion drill bit soon, meet after the solution cavity, dig the rig soon and connect land mine formula extrusion drill bit, carry out the pressurization drilling at a slow speed in the stake hole, the drill bit is in the downward rotary drilling in-process, through the pressurization device downwards of digging the rig soon, the drill bit bottom is to downthehole backfill layer go on to the drilling bottom downwards, the lateral wall transversely extrudees simultaneously, make the mixture of schist and clay fill get into the solution cavity in, through the backfill and the extrusion operation of relapse a lot of times, play downthehole and play and form new dado structure, ensure that the solution cavity section is filled and stable, through backfilling repeatedly, extrusion treatment, can effectually fill the solution cavity, prevent hole collapse and mud leakage, ensure to creep into the pore-forming on next step; the mine type extrusion drill bit is connected to the rotary drilling rig, so that the rotary drilling rig has a good extrusion function, and the application range of the rotary drilling rig is widened.
Drawings
FIG. 1 is a schematic structural view of a mine extrusion drill of the present invention;
FIG. 2 is a schematic view of the pile hole before backfilling;
fig. 3 is a schematic view of the pile hole after backfilling of the present invention;
fig. 4 is a schematic view of the present invention as it is being drilled with a landmine extrusion drill bit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-4, the preferred embodiment of the present invention is shown.
The rotary mine type karst cave 11 extrusion drill bit 12 in the karst development area can be used for construction of the karst development area karst cave 11, and certainly, can also be used for construction of other pile holes, and is not limited to application in the embodiment.
The extrusion drill bit 12 of the rotary mine type karst cave 11 in the karst development area comprises a connecting section 13, a straight hole diameter-protecting section 14 and an extrusion section 15, wherein the connecting section 13, the straight hole diameter-protecting section 14 and the extrusion section 15 are used for being connected with a rotary drilling rig, and the connecting section 13, the straight hole diameter-protecting section 14 and the extrusion section 15 are fixedly connected in sequence from top to bottom.
The rotary drilling rig is connected with the mine type extrusion drill bit 12 after encountering the karst cave 11, slow pressurized drilling is carried out in a pile hole, the drill bit 12 is in downward rotary drilling, a backfill layer 16 in the hole is transversely and simultaneously extruded towards the bottom and the side wall of the hole by the bottom of the drill bit 12 through a downward pressurizing device of the rotary drilling rig in the downward rotary drilling process, so that a mixture of slate and clay is filled into the karst cave 11, a new retaining wall structure is formed in the hole by repeated backfilling and extruding operations, the karst cave 11 section is ensured to be filled and stabilized, the karst cave 11 can be effectively filled through repeated backfilling and extruding, hole collapse and slurry leakage are prevented, and the next drilling is ensured; the landmine type extrusion drill bit 12 is connected to the rotary drilling rig, so that the rotary drilling rig has a good extrusion function, and the application range of the rotary drilling rig is widened.
The connecting section 13 is in a circular truncated cone shape and is arranged in a large manner from top to bottom, so that the drill bit 12 is conveniently connected with a drill rod of the rotary drilling rig, and the connection accuracy is improved.
The straight hole diameter-keeping section 14 is cylindrical, the diameter of the straight hole diameter-keeping section 14 is equal to the designed diameter of the pile hole, the diameter of the pile hole can be ensured during drilling and extrusion, a drilling guiding effect can be achieved, the drill bit 12 is not deviated, and the drill bit 12 can be conveniently and smoothly drilled by a subsequent rotary drilling machine.
The extrusion section 15 is in a circular truncated cone shape, the extrusion section 15 is arranged in a large-sized and small-sized mode, the drill bit 12 can conveniently enter the backfill layer 16, the circular truncated cone and the inclined plane which are large-sized and small-sized are designed, the extrusion effect can be fully played, and downward and peripheral pressure is generated on the backfill layer 16.
The landmine type extrusion drill bit 12 is arranged in a completely closed manner, so that sundries are prevented from entering the interior of the drill bit 12 and affecting the use of the drill bit 12.
The landmine type extrusion drill bit 12 is welded by adopting a steel plate, the thickness of the steel plate is 2cm, the drill bit 12 is ensured to have enough strength, and deformation in the drilling process is avoided.
The inside of the mine type extrusion drill bit 12 is hollow, the material can be saved due to the hollow inside, the cost is reduced, the weight of the drill bit 12 is also reduced, and the phenomenon that too much burden is caused on a rotary drilling rig is avoided.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The rotary mine type karst cave extrusion drill bit is characterized by comprising a connecting section, a straight hole diameter-protecting section and an extrusion section, wherein the connecting section, the straight hole diameter-protecting section and the extrusion section are used for being connected with a rotary drilling rig, the extrusion section is in a round table shape, the extrusion section is arranged in a large-end-up mode, and the connecting section, the straight hole diameter-protecting section and the extrusion section are sequentially and fixedly connected from top to bottom.
2. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 1, wherein the connecting section is in a circular truncated cone shape and is arranged in a small upper part and a large lower part.
3. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 2, wherein the diameter-preserving section of the straight hole is cylindrical.
4. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 3, wherein the diameter of the straight hole diameter-keeping section is equal to the design diameter of a pile hole.
5. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to any one of claims 1 to 4, wherein the mine type extrusion drill bit is arranged in a completely closed shape.
6. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 5, wherein the mine type extrusion drill bit is welded by steel plates.
7. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 6, wherein the thickness of the steel plate is 2 cm.
8. The rotary excavating mine type karst cave extrusion drill bit in the karst development area according to claim 7, wherein the interior of the mine type extrusion drill bit is hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322731.5U CN213710969U (en) | 2020-07-06 | 2020-07-06 | Rotary excavating mine type karst cave extrusion drill bit for karst development area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322731.5U CN213710969U (en) | 2020-07-06 | 2020-07-06 | Rotary excavating mine type karst cave extrusion drill bit for karst development area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213710969U true CN213710969U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021322731.5U Active CN213710969U (en) | 2020-07-06 | 2020-07-06 | Rotary excavating mine type karst cave extrusion drill bit for karst development area |
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|---|---|
| CN (1) | CN213710969U (en) |
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2020
- 2020-07-06 CN CN202021322731.5U patent/CN213710969U/en active Active
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