CN112502666A - Open-air blasting major diameter deep hole inner wall crack gunning system - Google Patents
Open-air blasting major diameter deep hole inner wall crack gunning system Download PDFInfo
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- CN112502666A CN112502666A CN202010271343.7A CN202010271343A CN112502666A CN 112502666 A CN112502666 A CN 112502666A CN 202010271343 A CN202010271343 A CN 202010271343A CN 112502666 A CN112502666 A CN 112502666A
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- pipeline
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- grouting
- hole
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- 238000005422 blasting Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000007569 slipcasting Methods 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 9
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000012257 stirred material Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 239000011268 mixed slurry Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an open-air blasting large-diameter deep hole inner wall crack gunning system which mainly comprises three subsystems, namely a ground material mixing and pressurizing system, a blast hole inner pipeline connecting system and a blast hole inner high-pressure guniting system; the ground material mixing and pressurizing system is characterized in that a negative pressure power formed by a negative pressure pump sucks mixed and stirred materials into a cyclone separator bin to realize material-gas separation, the separated mixture enters an air-locking unloader, and the mixture discharged by the air-locking unloader is changed into high-speed slurry flow at a discharge port of a jet vacuum pump through air pressure airflow; the high-speed slurry flows through a stainless steel outer wire extended feeding grouting pipeline and is communicated with a high-pressure slurry spraying system in the blast hole; the body of slip casting ware comprises two column barrel framves, and every column barrel frame evenly distributed all around four paste the scalable removal gyro wheel of tight big gun hole inner wall, firstly the gyro wheel can do along the big gun hole pore wall and reciprocate, secondly can keep the whole vibration by a wide margin of fuselage when slip casting ware operation. The electric rotating shaft arranged at the bottom of the grouting device drives the four-way grouting head to rotate 360 degrees along the hole wall, so that the grouting uniformity of the hole wall is ensured, and the situation that the hole diameter is reduced or even the hole is blocked after the grouting is avoided.
Description
Technical Field
The invention relates to a spray repair system for large-diameter deep hole inner wall cracks in open blasting, in particular to a spray repair system for inner wall cracks of blast holes before charging of the blast holes in open blasting engineering.
Background
In the open blasting engineering, due to the development of local joint cracks of a quasi-explosive rock body, the inner wall of a blast hole in individual construction is damaged and cracked, so that a leak hole is formed during charging of the blast hole, and the unit consumption of explosive is increased. The explosion gas expansion pressure generated in the blast hole after blasting appears obvious pressure drop because of damaged cracks, the existence of the cracks is not favorable for the tensile wave of the hole wall to generate tensile stress, the blasting effect of the surrounding rock to be blasted is reduced, and the blasting benefit is greatly reduced. Therefore, a system for gunning the cracks of the inner wall of the blast hole before charging is urgently needed in the open blasting engineering field.
Disclosure of Invention
In view of the above situation, an object of the present invention is to provide a gunning system for an inner wall crack of a large-diameter deep hole in open blasting, which can realize long-distance gunning repair of a large-diameter sound-controlled crack.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: provides a surface blasting large-diameter deep hole inner wall crack gunning system. The open-air blasting large-diameter deep hole inner wall crack gunning system is divided into three subsystems, including a ground material mixing and pressurizing system, a blast hole inner pipeline connecting system and a blast hole inner high-pressure guniting system. The ground mixing and pressurizing system is characterized by comprising: the device comprises a stirring barrel, a stirring motor, a material suction pipeline, a cyclone separator, an air locking unloader, a cyclone air outlet pipeline, a pipeline clamping ring, a negative pressure air pump, an air compressor, a high pressure air inlet pipeline, a jet vacuum pump and a feeding pipeline; the stirring motor is arranged at the top of the stirring barrel sealing cover, the material suction pipeline is communicated with the cyclone separator and the stirring barrel, and a pipeline clamping ring is arranged on the material suction pipeline and used for limiting the position of the pipeline; an air locking unloader is arranged below the cyclone separator; the top of the cyclone separator is connected with a negative pressure air pump through a cyclone air outlet pipeline; the other end of the negative pressure air pump is connected with an air compressor and a high pressure air inlet pipeline in a branch way; the high-pressure air inlet pipeline and the air locking unloading machine are connected with an air injection vacuum pump together, and the air injection vacuum pump is connected with the pipeline connecting system in the blast hole through the feeding pipeline.
The pipeline connecting system structure in the blast hole comprises: the orifice clamping device, the blast hole grouting pipe and the grouting sleeve fastening bolt; the orifice clamping device is set in an orifice of the deep hole, a grouting sleeve fastening bolt is embedded in the orifice clamping device for fixing, a blast hole grouting pipe is connected below the feeding pipeline through a stainless steel wire buckle movable joint, and a high-pressure guniting system in the blast hole is connected below the blast hole grouting pipe.
The high-pressure guniting system structure in the blast hole comprises: the grouting device comprises a columnar barrel frame, a telescopic movable roller, an electric rotating shaft and a four-way grouting head; wherein connect gradually two slip casting ware column barrel framves under the big gun hole slip casting pipe, slip casting ware column barrel frame both sides correspond and are provided with scalable removal gyro wheel and are connected with the downthehole wall for control high-pressure whitewashing system's reciprocates, slip casting ware column barrel frame bottom is through electronic pivot connection four-way whitewashing head.
In the open blasting large-diameter deep hole inner wall crack gunning system, the guniting material in the blast hole is a mixture of cement, a surfactant, yellow sand and glue. The proportion of the guniting mixture is cement: an interface agent: yellow sand: glue water: guniting = 1: 1: 0.3: 0.5, the interface agent is an adhesive and is made of vinyl acetate-ethylene, and the interface agent can roughen the surface of the inner hole wall and increase the adhesive force to the hole wall base layer, and is similar to a manual roughening treatment process. The glue adopts 801 formaldehyde-free glue for construction to enhance the adhesive strength of cement mortar.
According to the open blasting large-diameter deep hole inner wall crack gunning system, the mixed guniting material after stirring is sucked into the cabin body of the conical barrel cyclone separator by utilizing negative pressure generated by the negative pressure pump, so that negative pressure automatic feeding is realized, and material gas separation is realized by the conical barrel cyclone separator. The air-locking unloader is installed at the discharge outlet of the unloader working under negative pressure, the upper part receives the material discharged by the unloader, the impeller which rotates is relied on to play the role of conveying the material, the impeller is also used for sealing, the air is prevented from being sucked from the discharge outlet in the process of pneumatic conveying, and the normal discharge of the unloader is ensured.
According to the open blasting large-diameter deep hole inner wall crack gunning system, the jet vacuum pump converts the jetted high-pressure slurry flow into high-speed slurry flow, vacuum is formed at the outlet area of the nozzle, and the pumped mixed slurry is continuously sucked and extracted.
The invention has the beneficial effects that: the open-air blasting large-diameter deep hole inner wall crack gunning system can realize the long-distance gunning repair of the crack of the large-diameter deep hole through the matching of the stainless steel outer wire extension grouting pipe in the hole and the stainless steel wire buckle movable joint.
Drawings
FIG. 1 is a schematic diagram of a surface blasting large-diameter deep hole inner wall crack gunning system;
in the figure: 1. a stirring barrel; 2. a stirring motor; 3. a suction pipeline; 4. a cyclone separator; 5. a gas-locking unloader; 6. a cyclone air outlet pipeline; 7. a pipe clamp ring; 8. a negative pressure air pump; 9. an air compressor; 10. a high pressure inlet conduit; 11. a jet vacuum pump; 12. a feed conduit; 13. an orifice retainer; 14. a stainless steel outer wire extension grouting pipe is arranged in the blast hole; 15. an orifice grouting pipe fastening bolt; 16. a grouting device columnar barrel frame; 17. a telescopic movable roller; 18. an electric rotating shaft; 19. a four-way guniting head; 20. sealing the cover; 21. the stainless steel wire is buckled with the movable joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail with reference to fig. 1. The examples are only for explaining the patent of the present invention and are not intended to limit the patent of the present invention.
The open-air blasting large-diameter deep hole inner wall crack gunning system is divided into three subsystems, including a ground material mixing and pressurizing system, a blast hole inner pipeline connecting system and a blast hole inner high-pressure guniting system; the ground mixing and pressurizing system is characterized by comprising: the device comprises a stirring barrel 1, a stirring motor 2, a material suction pipeline 3, a cyclone separator 4, an air locking unloader 5, a cyclone air outlet pipeline 6, a pipeline clamping ring 7, a negative pressure air pump 8, an air compressor 9, a high pressure air inlet pipeline 10, a jet vacuum pump 11 and a feeding pipeline 12; the stirring motor 2 is arranged at the top of the sealing cover 20 of the stirring barrel 1, the material suction pipeline 3 is communicated with the cyclone separator 4 and the stirring barrel 1, and the material suction pipeline 3 is provided with a pipeline clamping ring 7 for limiting the position of the pipeline; an air locking unloader 5 is arranged below the cyclone separator 4; the top of the cyclone separator 4 is connected with a negative pressure air pump 8 through a cyclone air outlet pipeline 6; the other end of the negative pressure air pump 8 is branched and connected with an air compressor 9 and a high pressure air inlet pipeline 10; the high-pressure air inlet pipeline 10 and the air locking unloading machine 5 are jointly connected with an air injection vacuum pump 9, and the air injection vacuum pump 11 is connected with the pipeline connecting system in the blast hole through a feeding pipeline 12.
The pipeline connecting system structure in the blast hole comprises: the orifice stopper 13, the blast hole grouting pipe 14 and the grouting sleeve fastening bolt 15; wherein, the orifice stopper 13 is set to the orifice of the deep hole, the orifice stopper 13 is embedded with a grouting sleeve fastening bolt 15 for fixing, the feeding pipeline 12 is connected with the blast hole grouting pipe 14 through a stainless steel wire buckle movable joint 21, and the blast hole grouting pipe 14 is connected with the high-pressure guniting system in the blast hole.
The high-pressure guniting system structure in the blast hole comprises: a grouting device columnar barrel frame 16, a telescopic movable roller 17, an electric rotating shaft 18 and a four-way grouting head 19; wherein connect gradually two slip casting ware column barrel framves 16 under big gun hole slip casting pipe 14, slip casting ware column barrel frame 16 side corresponds is provided with four scalable removal gyro wheels 17 and is connected with the downthehole wall for control high-pressure whitewashing system's reciprocates, and firstly the gyro wheel can do along big gun hole pore wall and reciprocate, secondly can keep the whole not production of fuselage vibration by a wide margin when the slip casting ware operation. The electric rotating shaft 118 arranged at the bottom of the columnar barrel frame 16 of the grouting device drives the four-way guniting head 19 to rotate 360 degrees along the hole wall, so that the guniting of the hole wall is ensured to be even, and the situation that the hole diameter is reduced or even the hole is blocked after the guniting is avoided.
The guniting and stirring material of the ground material mixing and pressurizing system adopts the mixture of cement, an interfacial agent, yellow sand and glue, and the proportion is cement: an interface agent: yellow sand: glue water: guniting = 1: 1: 0.3: 0.5. the interface agent is an adhesive, is made of vinyl acetate-ethylene, can roughen the surface of the inner hole wall and can increase the adhesive force on the hole wall base layer, and is similar to a manual roughening treatment process. The glue adopts 801 formaldehyde-free glue for construction to enhance the adhesive strength of cement mortar.
The mixed and stirred materials are introduced into a bin of a cyclone separator 4 through a material suction pipeline 3 by means of airflow tangential direction by means of negative pressure power formed by a negative pressure air pump 8, so that the rotary motion of the mixed materials is caused, the negative pressure automatic feeding function is realized, and the mixed materials and air are separated by large inertial centrifugal force generated by the cyclone separator 4. The air-locking unloading machine 5 is arranged at the discharge outlet of the negative pressure cyclone separator 4, and the impeller rotating inside the air-locking unloading machine 5 plays a role in conveying materials and is also used for sealing, so that air is prevented from being sucked from the discharge outlet in the pneumatic conveying process, and normal discharge is ensured. The feed inlet of the jet vacuum pump 11 is communicated with the discharge outlet of the air locking discharger 5, and the air inlet of the jet vacuum pump 11 is communicated with a high-pressure air pipeline. The jet vacuum pump 11 converts the injected high-pressure slurry flow into a high-speed slurry flow, forms vacuum at the outlet area of the nozzle, and continuously sucks and extracts the pumped and mixed slurry.
The high-speed mixture ejected by the jet vacuum pump 11 is communicated with a high-pressure guniting system in the blast hole through an orifice feeding pipeline. The orifice stopper is a semi-circular cone with a pipe inlet passage at the center, and can be suitable for blast holes with different apertures. The blast hole grouting pipe 14 is a stainless steel external thread extension pipe, and can be used for extending a connecting pipe according to fracture positions with different depths in the blast hole by means of a stainless steel internal thread movable joint 21. When the grouting pipe is extended to the position of a blast hole crack through lengthening, a grouting sleeve fastening bolt 15 in the orifice stopper 13 can be fastened.
According to the open blasting large-diameter deep hole inner wall crack gunning system, the jet vacuum pump converts the jetted high-pressure slurry flow into high-speed slurry flow, vacuum is formed at the outlet area of the nozzle, and the pumped mixed slurry is continuously sucked and extracted.
Claims (3)
1. A surface blasting large-diameter deep hole inner wall crack gunning system is divided into three subsystems, including a ground material mixing and pressurizing system, a blast hole inner pipeline connecting system and a blast hole inner high-pressure guniting system; the method is characterized in that:
the ground mixing and pressurizing system is characterized by comprising: the device comprises a stirring barrel, a stirring motor, a material suction pipeline, a cyclone separator, an air locking unloader, a cyclone air outlet pipeline, a pipeline clamping ring, a negative pressure air pump, an air compressor, a high pressure air inlet pipeline, a jet vacuum pump and a feeding pipeline; the stirring motor is arranged at the top of the stirring barrel sealing cover, the material suction pipeline is communicated with the cyclone separator and the stirring barrel, and a pipeline clamping ring is arranged on the material suction pipeline and used for limiting the position of the pipeline; an air locking unloader is arranged below the cyclone separator; the top of the cyclone separator is connected with a negative pressure air pump through a cyclone air outlet pipeline; the other end of the negative pressure air pump is connected with an air compressor and a high pressure air inlet pipeline in a branch way; the high-pressure air inlet pipeline and the air locking unloader are jointly connected with an air injection vacuum pump, and the air injection vacuum pump is connected with a pipeline connecting system in the blast hole through a feeding pipeline;
the pipeline connecting system structure in the blast hole comprises: the orifice clamping device, the blast hole grouting pipe and the grouting sleeve fastening bolt; the orifice stopper is embedded with a grouting sleeve fastening bolt for fixing, a blast hole grouting pipe is connected below the feeding pipeline through a stainless steel wire buckle movable joint, and a high-pressure guniting system in the blast hole is connected below the blast hole grouting pipe;
the high-pressure guniting system structure in the blast hole comprises: the grouting device comprises a columnar barrel frame, a telescopic movable roller, an electric rotating shaft and a four-way grouting head; wherein connect gradually two slip casting ware column barrel framves under the big gun hole slip casting pipe, slip casting ware column barrel frame side corresponds and is provided with four scalable removal gyro wheels and is connected with the downthehole wall, slip casting ware column barrel frame bottom is through electric rotating shaft connection four-way whitewashing head.
2. The open-air blasting large-diameter deep hole inner wall crack gunning system according to claim 1, wherein; the guniting material in the blast hole is a mixture of cement, an interfacial agent, yellow sand and glue; the proportion of the guniting mixture is cement: an interface agent: yellow sand: glue water: guniting = 1: 1: 0.3: 0.5.
3. the open-pit blasting large-diameter deep hole inner wall crack gunning system according to claim 2, wherein; the glue is 801 formaldehyde-free glue for buildings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019105873933 | 2019-07-02 | ||
| CN201910587393 | 2019-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112502666A true CN112502666A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010271343.7A Pending CN112502666A (en) | 2019-07-02 | 2020-04-08 | Open-air blasting major diameter deep hole inner wall crack gunning system |
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| CN (1) | CN112502666A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776307A (en) * | 2022-04-14 | 2022-07-22 | 中铁隧道勘察设计研究院有限公司 | Composite pipeline system suitable for long-distance cement slurry conveying of tunnel curtain grouting and construction method |
| CN117006905A (en) * | 2022-04-27 | 2023-11-07 | 山西潞安矿业集团慈林山煤业有限公司夏店煤矿 | A method and charging structure for precise directional pre-splitting blasting of roofs |
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| CN204326977U (en) * | 2014-12-03 | 2015-05-13 | 福建省第八地质大队 | Probing churning retaining wall drilling tool |
| CN204716205U (en) * | 2015-06-17 | 2015-10-21 | 中国海洋石油总公司 | A kind of spiral drilling tractor driven by turbine generator |
| CN106285720A (en) * | 2016-08-16 | 2017-01-04 | 中国矿业大学 | A kind of feeding device of underground coal mine distance spraying system |
| US20190145190A1 (en) * | 2016-06-23 | 2019-05-16 | Bceg Environmental Remediation Co.,Ltd | In-situ injection of soil and groundwater - high pressure rotary jet grouting in-situ remediation system and method |
-
2020
- 2020-04-08 CN CN202010271343.7A patent/CN112502666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204326977U (en) * | 2014-12-03 | 2015-05-13 | 福建省第八地质大队 | Probing churning retaining wall drilling tool |
| CN204716205U (en) * | 2015-06-17 | 2015-10-21 | 中国海洋石油总公司 | A kind of spiral drilling tractor driven by turbine generator |
| US20190145190A1 (en) * | 2016-06-23 | 2019-05-16 | Bceg Environmental Remediation Co.,Ltd | In-situ injection of soil and groundwater - high pressure rotary jet grouting in-situ remediation system and method |
| CN106285720A (en) * | 2016-08-16 | 2017-01-04 | 中国矿业大学 | A kind of feeding device of underground coal mine distance spraying system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776307A (en) * | 2022-04-14 | 2022-07-22 | 中铁隧道勘察设计研究院有限公司 | Composite pipeline system suitable for long-distance cement slurry conveying of tunnel curtain grouting and construction method |
| CN117006905A (en) * | 2022-04-27 | 2023-11-07 | 山西潞安矿业集团慈林山煤业有限公司夏店煤矿 | A method and charging structure for precise directional pre-splitting blasting of roofs |
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Application publication date: 20210316 |