CN114000841B - Punching device and punching method - Google Patents
Punching device and punching method Download PDFInfo
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- CN114000841B CN114000841B CN202111287765.4A CN202111287765A CN114000841B CN 114000841 B CN114000841 B CN 114000841B CN 202111287765 A CN202111287765 A CN 202111287765A CN 114000841 B CN114000841 B CN 114000841B
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- 238000004080 punching Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 114
- 238000005520 cutting process Methods 0.000 claims abstract description 65
- 238000005553 drilling Methods 0.000 claims abstract description 41
- 238000011010 flushing procedure Methods 0.000 claims abstract description 37
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 27
- 239000011707 mineral Substances 0.000 claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 9
- 230000004323 axial length Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 14
- 239000004568 cement Substances 0.000 description 10
- 238000002386 leaching Methods 0.000 description 10
- 229910052770 Uranium Inorganic materials 0.000 description 8
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000013049 sediment Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
The invention discloses a punching device which comprises an adapter, a flushing pipe and an outer protection pipe, wherein the axial length of the outer protection pipe is larger than that of a mineral seam cutting surface in a drilling hole to be flushed, the mineral seam cutting surface can be completely shielded, flushing liquid is prevented from entering between the outer protection pipe and the mineral seam cutting surface, and punching waste liquid is reversely discharged through an annular liquid outlet cavity formed between the outer protection pipe and the flushing pipe, so that impact of water flow on the mineral seam cutting surface during punching is effectively avoided, and collapse of a mineral seam of the cutting surface is avoided. The invention provides a punching method by adopting the punching device, firstly, the punching device is put down into a to-be-washed drilling hole, the outer protective tube completely shields the cutting surface of the mineral seam along the axial direction of the outer protective tube, then punching liquid is led into the to-be-washed drilling hole through the washing tube, and punching waste liquid in the to-be-washed drilling hole is discharged back to the ground surface through the annular liquid outlet cavity between the outer protective tube and the washing tube, so that the impact of water flow on the cutting surface of the mineral seam during punching is effectively avoided.
Description
Technical Field
The invention belongs to the field of on-site leaching uranium mining, relates to a drilling and well washing technology, and particularly relates to a punching device and a punching method.
Background
The on-site leaching process drilling holes are channels for on-site leaching uranium extraction, and the drilling hole structure and construction process directly influence the working quality and state of the drilling holes and also directly influence the production and economic feasibility of the on-site leaching uranium extraction. The well flushing of the drilling is an important link in drilling construction, and influences the drilling quality and the on-site leaching production. On one hand, drilling fluid blocking the mineral seam in the construction process can be reduced, and on the other hand, the polluted mineral seam can restore the natural permeability as much as possible, so that the pumping and injecting liquid quantity of the drilling can be ensured.
At present, the field of in-situ leaching uranium mining researches and applies a secondary well-forming drilling construction process, and aims to realize accurate control of the seepage range of a leaching agent and obtain leaching liquid with ideal uranium concentration and flow. The construction process is that after the construction of the bare hole is completed, a sleeve is installed, full Kong Nixiang cement slurry injection is carried out, then a mineral layer cutting surface is formed by cutting at a target mineral layer section (the span of the mineral layer cutting surface along the axial direction of the bare hole is called as the axial length), the sleeve and the cement ring are windowed, and a hydraulic connection working channel is opened. Then the waste water enters a built-in filter, and finally reverse gravel throwing is carried out. In the cutting process of the mineral seam section, the thin drilling fluid is often adopted for punching, so that the phenomenon that the drilling fluid blocks the mineral seam as much as possible is avoided, and the permeability of the cutting surface of the mineral seam is reduced. Under such conditions, a small portion of slag, cement sheath and casing residues inevitably settle to the bottom of the casing, which causes an obstacle to the subsequent installation of the built-in filter; during reverse grouting, part of the slurry and cement slurry are retained at the bottom of the casing. Before the built-in filter is installed, if the measurement sand setting is found to exceed the standard, clear water or dilute drilling fluid is generally used for punching; but also cannot excessively punch holes so as not to cause collapse of the cut surface seam and enlarge bad results.
Disclosure of Invention
The invention aims to provide a punching device and a punching method, which can avoid the impact of water flow on a cutting surface (formed by cutting a seam section) as much as possible during punching so as to solve the problem of collapse of the seam on the cutting surface caused by excessive punching.
In order to achieve the above object, the present invention provides the following solutions:
the present invention provides a punching device, comprising:
the adapter is provided with a liquid inlet channel and a liquid outlet channel which are arranged at intervals; one end of the adapter is used for being connected with the lowering piece;
The flushing pipe is connected with the other end of the adapter so as to introduce punching liquid in the liquid inlet flow channel into a drilling hole to be flushed and punch the hole;
the outer protection pipe is connected with the other end of the adapter, the outer protection pipe is sleeved on the periphery of the flushing pipe, an annular liquid outlet cavity is formed between the outer protection pipe and the flushing pipe, and any liquid outlet flow passage is connected with the annular liquid outlet cavity so as to reversely discharge punching waste liquid in the to-be-flushed drilling hole; the axial length of the outer protection tube is larger than that of the cutting surface of the mineral seam in the drilling hole to be flushed.
Optionally, the lowering member is a drill rod.
Optionally, the adapter is a tubular adapter; the center of the tubular adapter is provided with the liquid inlet flow passage along the axial direction of the tubular adapter; the liquid outlet channels are distributed on the periphery of the liquid inlet channels and are arranged parallel to the liquid inlet channels.
Optionally, the outer protective tube and the flushing tube are coaxially arranged; the outer wall of the outer sheath sleeve is in clearance fit with the inner wall of the borehole to be flushed.
Optionally, one end of the liquid inlet channel extends along the axial direction thereof to a direction far away from the liquid outlet channel to form a convex inlet, and the convex inlet is used for being connected with the downward-falling piece; the other end of the liquid inlet flow passage is connected with the flushing pipe;
One end of any one of the liquid outlet channels, which is close to the outer convex inlet, is provided with a bevelled end surface, and any two adjacent bevelled end surfaces are connected along the circumferential direction of the liquid outlet channel to form a conical curved surface sleeved on the outer periphery of the outer convex inlet; one end of any one of the liquid outlet channels, which is far away from the convex inlet, is connected with the annular liquid outlet cavity.
Optionally, an end of the flushing pipe far away from the convex inlet is flush with an end of the outer protection pipe far away from the convex inlet;
or one end of the flushing pipe far away from the convex inlet is positioned inside the outer protection pipe.
Optionally, 4 to 6 liquid outlet channels are uniformly arranged on the periphery of the liquid inlet channel along the circumferential direction of the liquid inlet channel.
Optionally, the drill pipe further comprises a cutting blade, wherein the cutting blade is arranged at one end of the outer protection pipe far away from the adapter and can cut sediment in the drill hole to be flushed.
Optionally, 4 to 6 cutting blades are welded at intervals at one end of the outer protective tube far away from the adapter.
Meanwhile, the invention provides a punching method by adopting any one of the punching devices, which comprises the following steps:
The punching device is lowered into the drilling hole to be washed, and the outer protection tube completely shields the cutting surface of the mineral seam along the axial direction of the outer protection tube;
And introducing punching liquid into the drilling hole to be washed through the washing pipe, and returning the punching waste liquid in the drilling hole to be washed to the ground surface through the annular liquid outlet cavity.
In the punching method, a cutting blade may be provided at an end of the outer sheath remote from the adapter so as to be able to cut the deposit in the borehole to be washed.
Compared with the prior art, the invention has the following technical effects:
According to the punching device provided by the invention, the axial length of the outer protective tube is larger than that of the ore bed cutting surface in the drill hole to be washed, so that the ore bed cutting surface can be completely shielded, flushing liquid is prevented from entering between the outer protective tube and the ore bed cutting surface as much as possible, and punching waste liquid is reversely discharged through the annular liquid outlet cavity formed between the outer protective tube and the flushing tube. In the process of punching by using the punching device, neither punching liquid inlet nor punching waste liquid is in contact with the cutting surface of the mineral seam, so that the impact of water flow on the cutting surface of the mineral seam during punching is effectively avoided, and the collapse of the mineral seam of the cutting surface is avoided.
In another technical scheme disclosed by the invention, the end part of the outer protective tube is provided with the cutting blade, so that sediment difficult to clean, such as sand setting or cement paste, slurry mixing residues and the like in the pore canal can be effectively cut (the process can be driven to rotate by the drill rod), thereby being beneficial to completing punching work and improving punching effect.
The punching device provided by the invention is mainly used for cutting and building the filter secondary well-forming in-situ leaching uranium production well, and can also be used for washing the in-situ leaching uranium production well and hydrologic water well.
In addition, the punching method provided by the invention comprises the steps of firstly lowering the punching device into the drilling hole to be washed, enabling the outer protective tube to completely shield the cutting surface of the mineral seam along the axial direction of the outer protective tube, then introducing punching liquid into the drilling hole to be washed through the washing tube, and discharging the punching waste liquid in the drilling hole to be washed back to the ground surface through the annular liquid outlet cavity between the outer protective tube and the washing tube, so that the impact of water flow on the cutting surface of the mineral seam during punching is effectively avoided. According to actual conditions, the cutting blade can be arranged at one end of the outer protective tube far away from the adapter, so that sediment in a drilling hole to be washed is cut in the punching process, and the punching effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a transfer joint in a punching device according to an embodiment of the present invention;
FIG. 2 is a left side view of the adapter of FIG. 1;
Fig. 3 is a schematic structural view of an outer protective tube in a punching device according to an embodiment of the present invention;
FIG. 4 is a right side view of the outer sheath of FIG. 3;
FIG. 5 is a schematic view of a flushing pipe in a punching device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the operation of the punching device according to the embodiment of the present invention.
Wherein, the reference numerals are as follows:
100. A punching device;
1. an adapter; 11. a liquid inlet flow channel; 12. a liquid outlet channel;
2. a flushing pipe;
3. an outer protective tube;
4. an annular liquid outlet cavity;
5. A drill rod;
6. A conical curved surface;
7. A cutting blade;
8. a sleeve;
9. a seam cutting surface;
10. A cement sheath.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a punching device which can avoid the impact of water flow on a cutting surface (formed by cutting a seam section) as much as possible during punching and mainly solves the problem of collapse of the seam on the cutting surface caused by excessive punching.
Another object of the present invention is to provide a punching method using the above punching device.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1 to 6, the present embodiment provides a punching device 100, in particular, a punching device capable of performing secondary well forming process drilling and punching for cutting and building a filter, which mainly comprises an adapter 1, a flushing pipe 2 and an outer protection pipe 3. The adapter 1 is provided with a liquid inlet flow channel 11 and a liquid outlet flow channel 12, and the liquid inlet flow channel 11 and the liquid outlet flow channel 12 are arranged at intervals; one end of the adapter 1 is adapted to be connected to a drop-down member. The flushing pipe 2 is connected to the other end of the adapter 1 to introduce the punching liquid in the liquid inlet channel 11 into the borehole to be flushed and to perform punching. The outer protection tube 3 is connected with the other end of the adapter 1, the outer protection tube 3 is sleeved on the periphery of the flushing tube 2, an annular liquid outlet cavity 4 is formed between the outer protection tube 3 and the flushing tube 2, and any liquid outlet flow channel 12 is connected with the annular liquid outlet cavity 4 so as to reversely discharge punching waste liquid in a to-be-flushed drilling hole; the axial length of the outer protection tube 3 is larger than that of the mineral seam cutting surface 9 in the drill hole to be washed, so that the mineral seam cutting surface 9 is completely shielded when the drill hole is used, and impact of water flow on the mineral seam cutting surface 9 during punching is avoided. The "punching waste liquid" refers to the liquid discharged from the punching device 100 and having undergone preliminary punching, and the liquid can be directly discharged and filtered and then enters the well through the punching device 100 again, so as to realize the recycling of the punching liquid.
In this embodiment, the borehole to be flushed may be a borehole in which the casing 8 and cement sheath 10 have been provided. A bare hole is formed in the well, and the casing 8 and cement sheath 10 are disposed in the bare hole.
In this embodiment, the lowering member may be a drill pipe, a fixed pulley rope, or the like. Preferably, the running member is a drill rod 5.
In this embodiment, the adapter 1 is preferably a tubular adapter 1; the center of the tubular adapter 1 is provided with a liquid inlet flow passage 11 along the axial direction; the liquid outlet channels 12 are distributed on the periphery of the liquid inlet channel 11 and are arranged parallel to the liquid inlet channel 11. Wherein the outer protective tube 3 and the flushing tube 2 are coaxially arranged; the outer wall of the outer protective tube 3 sleeve is in clearance fit with the inner wall of the borehole to be washed, and more preferably, the outer diameter of the outer protective tube 3 is close to the inner diameter of the sleeve 8, so that a large amount or excessive punching waste liquid can be effectively prevented from entering a gap between the outer protective tube and the inner wall, and impact on the cutting surface 9 of the mineral seam is caused.
In this embodiment, one end of the liquid inlet channel 11 extends along the axial direction thereof in a direction away from the liquid outlet channel 12 to form a convex inlet, and the convex inlet is used for connecting with a lowering member; the other end of the liquid inlet flow passage 11 is connected with a flushing pipe 2; one end of any one liquid outlet channel 12, which is close to the outer convex inlet, is provided with a bevelled end surface, and any two adjacent bevelled end surfaces are connected along the circumferential direction of the liquid outlet channel 12 to form a conical curved surface 6 sleeved on the outer circumference of the outer convex inlet; one end of any liquid outlet channel 12 far away from the convex inlet is connected with the annular liquid outlet cavity 4.
In this embodiment, the flushing pipe 2 and the adapter 1 are preferably in threaded connection, for example, an external thread is provided at one end (the top end in view of fig. 4) of the flushing pipe 2, and a corresponding internal thread is provided at the liquid outlet of the liquid inlet channel 11 of the adapter 1, i.e. at the end of the liquid inlet channel 11 away from the external convex inlet thereof. In the actual operation process, the length of the flushing pipe 2 is preferably equal to that of the outer protecting pipe 3, namely, one end of the flushing pipe 2 far away from the outer convex inlet is flush with one end of the outer protecting pipe 3 far away from the outer convex inlet; or the end of the flushing pipe 2 remote from the male inlet is located inside the outer protection pipe 3.
In this embodiment, 4 to 6 liquid outlet channels 12 are uniformly arranged on the outer periphery of the liquid inlet channel 11 along the circumferential direction thereof.
In this embodiment, the adapter 1 is preferably screwed with the outer protection tube 3, for example, an external thread is provided at the end of the adapter 1 away from the outer convex inlet, and an internal thread matched with the external thread is provided at the end of the outer protection tube 3. Likewise, it is preferred that the adapter 1 is also threaded, for example, by providing an internal thread in the male inlet of the adapter 1, and the drop, for example, by providing a corresponding external thread in the end of the drill rod 5.
In this embodiment, the punching liquid may be drilling liquid or clear water.
In this embodiment, a cutting blade 7 is also included, the cutting blade 7 being arranged at the end of the outer sheath 3 remote from the adapter 1, which is capable of cutting the deposit in the borehole to be flushed. The cutting process is mainly carried out with the introduction of punching liquid and/or the discharge of punching waste liquid.
In this embodiment, 4 to 6 cutting blades 7 are welded at intervals to the end of the outer protection tube 3 far away from the adapter 1.
Meanwhile, the present embodiment proposes a punching method using the above-mentioned punching device 100, mainly including:
Step 1: in a conventional manner, the casing 8 and corresponding cement sheath 10 are cut at a section of the seam being drilled to form a seam cutting face 9.
Step 2: the punching device 100 is lowered into the borehole to be flushed through the drill rod 5 and the outer shield 3 is made to completely shield the seam cutting surface 9 in its axial direction, i.e. it should be that one end of the outer shield 3 (top end in view of fig. 6) is located above the top of the seam cutting surface 9 and the other end of the outer shield 3 (bottom end in view of fig. 6) is located below the bottom of the seam cutting surface 9. The assembly of the punching device 100 should also be performed before, namely: firstly, connecting a flushing pipe 2 with an adapter 1 through threads, and then connecting an outer protection pipe 3 with the adapter 1 through threads;
Step 3: and (3) introducing punching liquid into the drilling hole to be washed through the washing pipe 2, and returning the punching waste liquid in the drilling hole to be washed to the ground surface through the annular liquid outlet cavity 4. Among them, the punching liquid is preferably drilling liquid, and the power for guiding the punching liquid can be derived from a slurry pump. Because the clearance between the outer protecting pipe 3 and the sleeve pipe 8 of the punching device 100 is very small, the mud (flushing waste liquid) carries sand, sediment and the like, and basically or totally flows back to the ground surface through the annular liquid outlet cavity 4.
In actual operation, since the end portion (the bottom end in the view angle shown in fig. 6) of the outer protection tube 3 is further provided with the cutting blade 7, in the process performed in step 3, when the sand setting surface formed by the deposition of the bottom portion of the sleeve 8 is still very high, the punching device 100 can be driven by the rotation of the drill rod 5 to perform drilling while punching (also referred to as "hole cleaning", mainly referred to as a process of introducing punching liquid), and the drilling process, that is, the process of cutting the sand setting surface or the deposition by the cutting blade 7 is beneficial to improving the punching effect.
After the punching operation is completed, the slurry pump is turned off, and the drill pipe 5 and the punching device 100 are sequentially lifted up to the ground surface. Finally, a built-in filter can be placed down.
The above-mentioned can know, this technical scheme has realized avoiding rivers to the impact of seam cutting face as far as possible when punching a hole to avoid causing the collapse of cutting face seam. When sand setting or cement slurry, drilling fluid mixing residues and the like are difficult to clean, the cutting blade welded on the end face of the outer protection pipe can play a role in cutting, and punching work is completed. The punching device has the functions of punching and clearing the duct barriers (mainly realized by the cutting function of the cutting blade 7), so that the punching device also has the surface detection effect, and has the path detection function on whether the subsequent built-in filter can be placed smoothly. The punching device 100 and the punching method can be applied to flushing of uranium production wells and hydrologic water wells in general, and particularly deep wells and refractory sand setting which are difficult to clean by an air compressor.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. A punching device, characterized by comprising:
The adapter is provided with a liquid inlet channel and a liquid outlet channel which are arranged at intervals; one end of the adapter is used for being connected with the lowering piece; the dropping piece is a drill rod; the adapter is a tubular adapter, the center of the tubular adapter is provided with the liquid inlet flow channels along the axial direction of the tubular adapter, and the liquid outlet flow channels are distributed on the periphery of the liquid inlet flow channels and are arranged parallel to the liquid inlet flow channels;
The flushing pipe is connected with the other end of the adapter so as to introduce punching liquid in the liquid inlet flow channel into a drilling hole to be flushed and punch the hole;
The outer protection pipe and the flushing pipe are connected to the same end of the adapter, the outer protection pipe is sleeved on the periphery of the flushing pipe, an annular liquid outlet cavity is formed between the outer protection pipe and the flushing pipe, and any liquid outlet flow passage is connected with the annular liquid outlet cavity so as to reversely discharge punching waste liquid in the to-be-flushed drilling hole; the axial length of the outer protection tube is greater than that of a seam cutting surface in the drill hole to be washed, the outer wall of the outer protection tube is in clearance fit with the inner wall of the drill hole to be washed, and the outer diameter of the outer protection tube is close to the inner diameter of a sleeve of the drill hole to be washed, so that punching waste liquid is prevented from entering a gap between the outer protection tube and the sleeve.
2. A punching device according to claim 1, characterized in that the outer sheath is arranged coaxially with the flushing pipe.
3. A punching device according to claim 1 or 2, characterized in that one end of the liquid inlet channel extends in the axial direction thereof in a direction away from the liquid outlet channel to form a convex inlet for connection with the drop member; the other end of the liquid inlet flow passage is connected with the flushing pipe;
One end of any one of the liquid outlet channels, which is close to the outer convex inlet, is provided with a bevelled end surface, and any two adjacent bevelled end surfaces are connected along the circumferential direction of the liquid outlet channel to form a conical curved surface sleeved on the outer periphery of the outer convex inlet; one end of any one of the liquid outlet channels, which is far away from the convex inlet, is connected with the annular liquid outlet cavity.
4. A punching device according to claim 3, characterized in that the end of the flushing pipe remote from the male inlet is flush with the end of the outer protection pipe remote from the male inlet;
or one end of the flushing pipe far away from the convex inlet is positioned inside the outer protection pipe.
5. The punching device according to claim 1 or 2, characterized in that 4 to 6 liquid outlet channels are uniformly arranged on the periphery of the liquid inlet channel along the circumferential direction of the liquid inlet channel.
6. A punching device according to claim 1 or 2, characterized in that it further comprises a cutting blade arranged at the end of the outer sheath remote from the adapter, which is capable of cutting deposits in the borehole to be washed.
7. A punching method using the punching device according to any one of claims 1 to 5, comprising:
The punching device is lowered into the drilling hole to be washed, and the outer protection tube completely shields the cutting surface of the mineral seam along the axial direction of the outer protection tube;
And introducing punching liquid into the drilling hole to be washed through the washing pipe, and returning the punching waste liquid in the drilling hole to be washed to the ground surface through the annular liquid outlet cavity.
8. A method of punching according to claim 7, characterized in that a cutting blade is provided at the end of the outer sheath remote from the adapter so as to be able to cut the deposit in the borehole to be flushed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287765.4A CN114000841B (en) | 2021-11-02 | Punching device and punching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287765.4A CN114000841B (en) | 2021-11-02 | Punching device and punching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114000841A CN114000841A (en) | 2022-02-01 |
| CN114000841B true CN114000841B (en) | 2024-06-04 |
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