CN113202550B - Underground movable cement waste rock cemented filling system and method - Google Patents
Underground movable cement waste rock cemented filling system and method Download PDFInfo
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- CN113202550B CN113202550B CN202110391829.9A CN202110391829A CN113202550B CN 113202550 B CN113202550 B CN 113202550B CN 202110391829 A CN202110391829 A CN 202110391829A CN 113202550 B CN113202550 B CN 113202550B
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- 239000004568 cement Substances 0.000 title claims abstract description 183
- 239000010878 waste rock Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000002002 slurry Substances 0.000 claims abstract description 63
- 238000005507 spraying Methods 0.000 claims abstract description 40
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 239000002699 waste material Substances 0.000 claims abstract description 15
- 238000002386 leaching Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 28
- 239000011440 grout Substances 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 3
- 230000008602 contraction Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 5
- 238000005065 mining Methods 0.000 description 14
- 239000002184 metal Substances 0.000 description 5
- 238000004537 pulping Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an underground movable cement waste stone cementing and filling system which comprises a cement conveying belt, a water pipe, a compressed air pipe, a movable cement stirring vehicle, a slurry conveying pipe and a cement slurry spraying system, wherein the cement conveying belt is erected at the upper part of a cement stirring bin, the water pipe and the compressed air pipe are connected with one side of the movable cement stirring vehicle, the cement slurry spraying system is connected with the other side of the movable cement stirring vehicle through the slurry conveying pipe, dry cement on the cement conveying belt and water in the water pipe are mixed in the cement stirring bin according to a certain proportion, and the cement and the water are fully stirred under the power action of compressed air to prepare cement slurry. The prepared cement slurry in the cement stirring bin enters a cement slurry spraying system through a slurry conveying pipeline and is injected into a goaf of the stope through a leaching nozzle. Through the filling system, the cementing filling of underground cement and waste rock with continuity, high efficiency and low cost can be realized, and the filling system has the advantages of simplicity, practicability, low cost, flexible movement and the like.
Description
Technical Field
The invention relates to the technical field of mine filling, in particular to a mine underground movable cement waste rock cemented filling system and a filling method.
Background
With the continuous implementation of national environmental policies, green mining of metal ores has been a trend. Filling mining is the preferred scheme of green mining of metal ores, wherein barren rock filling is one of the methods with the lowest cost and the most convenient operation in filling mining and is favored by mines.
When filling waste rock, cement slurry is usually added into the waste rock material to improve the strength of the filling body. The cement slurry is injected into the waste rock pile through a pipeline after surface cement is made into slurry, or the cement transported through the surface is unpacked manually, and the cement waste rock is properly crushed by a scraper and then is filled into a stope. Although the method for surface pulping is convenient to transport and high in automation degree, the problems of long transport distance, difficulty in filling and washing pipes, difficulty in controlling slurry concentration, inaccuracy in operation, complex management, serious cement waste, poor filling quality and the like exist; although the manual unpacking and the tamping mean square method of the scraper for packaging cement are simple and convenient to construct and good in filling body quality, the method has the problems of low filling efficiency, high labor intensity, high filling cost and the like, and automation is difficult to realize.
As is well known, with the continuous improvement of the living standard of people, the demand of people for metal ore resources increases year by year, and the deep mining of metal ores becomes the main development direction of the development of the metal ore resources. The main problem of the deep well mining is the mining cost, the mining environment treatment and the lifting transportation of the 'three-high one disturbance' of the deep well form the main cost of the deep well mining, and if the goaf is used for filling the waste rocks, the lifting transportation cost of the waste rocks of the deep well and the land collection and management cost of the earth surface are reduced, the method and the means for effectively reducing the deep well mining cost are provided. When the underground mining waste rock filling is adopted, the problems that the source of the mining waste rock is dispersed, the waste rock of a single stope is less in one-time consumption and not centralized when the mining waste rock filling is used for filling a goaf and the like exist, and the cement pulping method or other methods in the traditional cement waste rock filling system have the characteristics of inconvenience in use, poor filling quality, high cost, low efficiency and difficulty in meeting actual requirements.
Disclosure of Invention
In order to solve the technical problems, the invention provides a simple, practical and low-cost underground movable waste rock cement cemented filling system and a filling method, aiming at fully utilizing waste rocks in an underground stope, solving the problems of discontinuity and low efficiency of the traditional filling mode, ensuring the strength of a filling body, improving the mining efficiency of a mine and ensuring the safety of the stope operation.
The technical scheme of the invention is as follows: the utility model provides a portable cement barren rock cementation filling system in pit, its characterized in that, includes cement conveyer belt, water pipe, compressed air pipe, portable cement mixer, defeated thick liquid pipe and grout spraying system, portable cement mixer includes cement mixing storehouse and mobilizable wheel, and through-hole one is seted up on cement mixing storehouse one side upper portion, and the water pipe links to each other with cement mixing storehouse through-hole one, and cement mixing storehouse homonymy bottom fluting, compressed air pipe passes the fluting and lays in cement mixing storehouse bottom, the compressed air pipe surface is opened has a plurality of fumaroles, and cement mixing storehouse bottom opposite side is seted up through-hole two, links to each other cement mixing storehouse and grout spraying system through defeated thick liquid union coupling through-hole two, and grout spraying system links to each other with the collecting space area, and cement conveyer belt erects in cement mixing storehouse upper portion, wherein, cement conveyer belt, water pipe, compressed air pipe, The connection among the underground movable cement mixer, the slurry conveying pipe and the cement slurry spraying system is detachable and assembled.
Furthermore, a water valve and a flowmeter are sequentially arranged on the water pipe and used for detecting and controlling the flow of water in the water supply pipeline.
Furthermore, an air valve is arranged on the compressed air pipe and used for adjusting and controlling the compressed air in the air supply pipeline.
Furthermore, single-row or multi-row compressed air pipelines can be arranged according to the size of the cement stirring bin, and the multi-row pipelines can be connected through a multi-channel valve.
Further, the dry cement on the cement conveying belt and the water in the water pipe are mixed in a cement stirring bin according to a certain proportion, and the cement and the water are fully stirred under the power action of compressed air to prepare cement paste.
Further, grout spraying system include highly-compressed air pipe, shrinkage pipe, throat pipe, diffusion tube and leaching nozzle, the last pneumatic valve that is equipped with of highly-compressed air pipe, grout spraying system designs according to the venturi principle moreover, and grout in the defeated thick liquid pipe loops through shrinkage pipe, throat pipe, diffusion tube to pressurized air intensive mixing in throat pipe department and highly-compressed air pipe is at last to be vaporific blowout through leaching nozzle, fills with goaf barren rock intensive mixing.
Furthermore, a grout conveying pipe valve is arranged on the grout conveying pipe and used for controlling the flow of the grout in the grout conveying pipeline.
The filling method adopting the underground movable cement waste rock cemented filling system is characterized by comprising the following steps:
(1) preparing the components of the cement conveyor belt, the water pipe, the air compression pipe, the slurry conveying pipe and the cement slurry spraying system, transporting the components to the vicinity of a stope by using a mobile cement mixer truck, and preparing for assembly;
(2) erecting a cement conveyor belt, then respectively assembling a water pipe and an air compression pipe with a cement stirring bin, assembling a cement slurry spraying system with the cement stirring bin through a slurry conveying pipe, and respectively connecting the water pipe and a compressed air pipe with a water supply facility and an air supply facility near a stope;
(3) conveying the waste rocks generated in the tunneling process to a goaf through a scraper to fill the waste rocks;
(4) manually placing dry cement on a cement conveyor belt, opening a switch of a water supply pipeline and an air supply pipeline, controlling the dry cement and the water to be mixed in a cement stirring bin according to a certain proportion, and fully stirring the cement and the water under the power action of compressed air to prepare cement paste;
(5) cement slurry enters a cement slurry spraying system through a slurry conveying pipeline, sequentially passes through a shrinkage pipe, a throat pipe and a diffusion pipe, is fully mixed with pressurized air in a high-pressure air pipe at the throat pipe, is sprayed out in a mist shape through a leaching nozzle, and is fully mixed with goaf waste rocks to carry out cemented filling;
(6) after the goaf is filled, the components such as the cement conveyor belt, the water pipe, the compressed air pipe, the slurry conveying pipe, the cement slurry spraying system and the like are disassembled, conveyed to the next place to be assembled, and the goaf is waited to be filled.
Advantageous effects
The invention makes full use of the standard mine car and underground compressed air and tap water, transforms the mine car into a movable slurry making car by adding a bottom compressed air stirring system, a water valve, an air valve and the like, integrates a small movable belt conveyor to transport cement, controls the cement quantity by the speed of the belt conveyor, controls the water quantity by a flowmeter, controls the cement slurry stirring time by the air valve, and prepares the cement slurry with standard proportion to form the movable cement slurry making system. It has the following two outstanding advantages:
(1) the method has the characteristics of applicability to mine waste rock filling dispersion and cement dosage dispersion, avoids the defects of other methods or manual methods, and has the characteristics of low labor intensity, low filling cost, high filling quality, convenience in use and the like;
(2) the invention makes a significant improvement on the traditional cement slurry spraying system. At the position of a discharge port of the pulping vehicle, underground compressed air and a special venturi tube are utilized, the pressure is improved by changing the pipeline structure, two-phase flow is changed into three-phase flow, and the pulp discharge suction force and the pulp discharge speed at the outlet of the pulping vehicle are improved; by utilizing the improved slurry spraying head, the spraying range of the cement slurry is improved by increasing the pressure of the slurry outlet, so that the uniform cemented filling of the waste cement stones is realized, the cement consumption is further reduced, the filling quality of the waste cement stones is improved, and the strength of a waste cement stone filling body is improved.
Drawings
FIG. 1 is a diagram of a downhole mobile cement waste rock cemented filling system;
FIG. 2 is a schematic view of a cement slurry spraying system;
FIG. 3-is a top view of the downhole mobile cement mixer.
In the figure: 1-cement conveyer belt, 2-water pipe, 3-water valve, 4-flowmeter, 5-compressed air pipe, 6-air valve, 7-air vent, 8-cement stirring bin, 9-slurry conveying pipe, 10-slurry conveying pipe valve, 11-cement slurry spraying system, 12-scraper, 13-waste stone, 14-goaf, 15-high-pressure air pipe, 16-air valve, 17-shrinkage pipe, 18-throat pipe, 19-diffusion pipe, 20-leaching nozzle, 21-three-way valve and 22-wheel
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings and examples:
the utility model provides a portable cement barren rock cementation filling system in pit, includes cement conveyer belt 1, water pipe 2, compressed air pipe 5, portable cement mixer car and grout spraying system 11, portable cement mixer car includes cement stirring storehouse 8 and mobilizable wheel 22, and through-hole one is seted up on cement stirring storehouse one side upper portion, and water pipe 2 links to each other with cement stirring storehouse 8 through-hole one, and cement stirring storehouse 8 homonymy bottom fluting, compressed air pipe 5 passes the fluting and lays in cement stirring storehouse 8 bottom, compressed air pipe 5 surface is opened has a plurality of fumaroles 7, and cement stirring storehouse 8 bottom opposite side is seted up through-hole two, links to each other cement stirring storehouse 8 and grout spraying system 11 through defeated thick liquid pipe 9 connect through-hole two, and grout spraying system 11 links to each other with collecting space area 14, and cement conveyer belt 1 erects in cement stirring storehouse 8 upper portions, wherein, cement conveyer belt 1, The connections between the water pipe 2, the compressed air pipe 5, the downhole mobile cement mixer, the grout pipe 9 and the grout spraying system 11 are detachable and assembled. When the stope is filled, each part of the components is moved to the position near the stope by a movable cement mixer, a cement conveyor belt 1 is erected, then a water pipe 2, an air compression pipe 5 and a cement mixing bin 8 are assembled, and a cement paste spraying system 11 is assembled with the cement mixing bin 8 through a cement conveying pipe 9.
Furthermore, a water valve 3 and a flow meter 4 are sequentially arranged on the water pipe 2 and used for detecting and controlling the flow of water in the water supply pipeline.
Further, an air valve 6 is arranged on the compressed air pipe 5 and used for adjusting and controlling the compressed air in the air supply pipeline.
Furthermore, single-row or multi-row compressed air pipelines can be arranged according to the size of the cement stirring bin, and the multi-row pipelines can be connected through a multi-channel valve.
In this embodiment, two rows of compressed air pipelines are arranged at the bottom of the mixing bin, and the two rows of compressed air pipelines are connected outside the cement mixing bin through a three-way valve 21.
Further, dry cement on the cement conveying belt 1 and water in the water pipe 2 are mixed in the cement stirring bin 8 according to a certain proportion, and the cement and the water are fully stirred under the power action of compressed air to prepare cement paste. The prepared cement slurry in the cement stirring bin 8 enters a cement slurry spraying system 11 through a slurry conveying pipeline 9 and is injected into a goaf of the stope through a leaching nozzle.
Further, grout spraying system 11 include highly-compressed air pipe 15, shrink pipe 17, throat pipe 18, diffuser 19 and leaching nozzle 20, the last pneumatic valve 16 that is equipped with of highly-compressed air pipe 15, grout spraying system designs according to the venturi principle in addition, and the grout in defeated thick liquid pipe 9 loops through shrink pipe 17, throat pipe 18, diffuser 19 to at the pressurized air intensive mixing in throat pipe 18 department and highly-compressed air pipe 15, be vaporific blowout through leaching nozzle 20 at last, fill with goaf waste rock intensive mixing.
Further, a slurry conveying pipe valve 10 is arranged on the slurry conveying pipe 9 and used for controlling the flow of the slurry in the slurry conveying pipeline.
A filling method adopting the underground movable cement waste rock cemented filling system comprises the following steps:
(1) preparing components of a cement conveyor belt 1, a water pipe 2, an air compression pipe 5, a grout conveying pipe 9 and a cement slurry spraying system 11, conveying the components to the vicinity of a stope by using a mobile cement mixer truck, and preparing for assembly;
(2) erecting a cement conveyor belt 1, then respectively assembling a water pipe 2 and an air compression pipe 5 with a cement stirring bin 8, assembling a cement paste spraying system 11 with the cement stirring bin 8 through a cement conveying pipe 9, and respectively connecting the water pipe 2 and the air compression pipe 5 with a water supply facility and an air supply facility near a stope;
(3) the waste rocks 13 generated in the tunneling process are conveyed to the goaf 14 through the scraper 12 for waste rock filling;
(4) manually placing dry cement on a cement conveyor belt 1, opening a switch of a water supply pipeline and an air supply pipeline, controlling the dry cement and the water to be mixed in a cement stirring bin according to a certain proportion, and fully stirring the cement and the water under the power action of compressed air to prepare cement paste;
(5) the cement slurry enters a cement slurry spraying system 11 through a slurry conveying pipeline 9, sequentially passes through a shrinkage pipe 17, a throat pipe 18 and a diffusion pipe 19, is fully mixed with the pressurized air in a high-pressure air pipe 15 at the throat pipe, is sprayed out in a mist shape through a leaching nozzle 20, and is fully mixed with the waste rock in the goaf for cemented filling;
(6) after the goaf is filled, the components such as the cement conveyor belt 1, the water pipe 2, the compressed air pipe 5, the slurry conveying pipe 9, the cement slurry spraying system and the like are disassembled, conveyed to the next place to be assembled, and the goaf is waited to be filled.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a portable cement barren rock cementation filling system in pit, its characterized in that, includes cement conveyer belt, water pipe, compressed air pipe, portable cement mixer, defeated thick liquid pipe and grout spraying system, portable cement mixer includes cement mixing storehouse and mobilizable wheel, and through-hole one is seted up on cement mixing storehouse one side upper portion, and the water pipe links to each other with cement mixing storehouse through-hole one, and cement mixing storehouse homonymy bottom fluting, compressed air pipe passes the fluting and lays in cement mixing storehouse bottom, the compressed air pipe surface is opened has a plurality of fumaroles, and cement mixing storehouse bottom opposite side is seted up through-hole two, links to each other cement mixing storehouse and grout spraying system through defeated thick liquid union coupling through-hole two, and grout spraying system links to each other with the collecting space area, and cement conveyer belt erects in cement mixing storehouse upper portion, wherein, cement conveyer belt, water pipe, compressed air pipe, The connection among the underground movable cement mixer, the slurry conveying pipe and the cement slurry spraying system is detachable and assembled; grout spraying system include highly-compressed air pipe, shrinkage pipe, throat pipe, diffuser pipe and leaching nozzle, the last pneumatic valve that is equipped with of highly-compressed air pipe, grout spraying system designs according to the venturi principle moreover, and grout in the defeated thick liquid pipe loops through shrinkage pipe, throat pipe, diffuser pipe to pressurized air intensive mixing in throat pipe department and highly-compressed air pipe is at last to be vaporific blowout through leaching nozzle, fills with collecting space area barren rock intensive mixing.
2. The downhole mobile cement waste rock cemented filling system as claimed in claim 1, wherein the water pipe is provided with a water valve and a flow meter in sequence for detecting and controlling the flow of water in the water supply pipeline.
3. The downhole mobile cement waste rock cementing and filling system according to claim 1, wherein the compressed air pipe is provided with an air valve for regulating and controlling the compressed air in the air supply pipeline.
4. The system of claim 1, wherein the single or multiple rows of compressed air pipes are arranged according to the size of the cement mixing bin, and the multiple rows of pipes can be connected through a multi-channel valve.
5. The downhole mobile cement waste rock cementing and filling system according to claim 1, wherein the dry cement on the cement conveyer belt and the water in the water pipe are mixed in a cement mixing bin according to a certain proportion, and the cement and the water are fully mixed under the power of compressed air to prepare cement paste.
6. The downhole mobile cement waste rock cemented filling system according to claim 1, wherein the slurry pipe is provided with a slurry pipe valve for flow control of the slurry in the slurry pipe.
7. A method of filling using the downhole mobile cement waste rock cementitious filling system according to any one of claims 1 to 6, characterised in that the method comprises the steps of:
(1) preparing the components of the cement conveyor belt, the water pipe, the air compression pipe, the slurry conveying pipe and the cement slurry spraying system, transporting the components to the vicinity of a stope by using a mobile cement mixer truck, and preparing for assembly;
(2) erecting a cement conveyor belt, then respectively assembling a water pipe and an air compression pipe with a cement stirring bin, assembling a cement slurry spraying system with the cement stirring bin through a slurry conveying pipe, and respectively connecting the water pipe and a compressed air pipe with a water supply facility and an air supply facility near a stope;
(3) conveying the waste rocks generated in the tunneling process to a goaf through a scraper to fill the waste rocks;
(4) manually placing dry cement on a cement conveyor belt, opening a switch of a water supply pipeline and an air supply pipeline, controlling the dry cement and the water to be mixed in a cement stirring bin according to a certain proportion, and fully stirring the cement and the water under the power action of compressed air to prepare cement paste;
(5) the cement slurry enters a cement slurry spraying system through a slurry conveying pipeline, sequentially passes through a contraction pipe, a throat pipe and a diffusion pipe, is fully mixed with the pressurized air in the high-pressure air pipe at the throat pipe, is sprayed out in a mist shape through a leaching nozzle, and is fully mixed with the waste rock in the goaf for cemented filling;
(6) and after the goaf is filled, disassembling the cement conveyor belt, the water pipe, the compressed air pipe, the slurry conveying pipe and the cement slurry spraying system component, conveying to the next place for assembly, and waiting for filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110391829.9A CN113202550B (en) | 2021-04-13 | 2021-04-13 | Underground movable cement waste rock cemented filling system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110391829.9A CN113202550B (en) | 2021-04-13 | 2021-04-13 | Underground movable cement waste rock cemented filling system and method |
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| Publication Number | Publication Date |
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| CN113202550A CN113202550A (en) | 2021-08-03 |
| CN113202550B true CN113202550B (en) | 2022-05-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434204A (en) * | 2011-10-13 | 2012-05-02 | 金川集团有限公司 | Mine waste rock and all tailing pipeline conveying filling system and filling method using same |
| CN102606206A (en) * | 2012-04-01 | 2012-07-25 | 西安建筑科技大学 | Mobile filling method for managing underground gobs |
| CN103590851A (en) * | 2013-10-25 | 2014-02-19 | 玉溪矿业有限公司 | Underground waste-rock concrete preparation, pumping and filling system and method |
| CN110005465A (en) * | 2019-03-25 | 2019-07-12 | 安徽开发矿业有限公司 | A kind of deads tailings collaboration consolidated fill method |
| CN210003328U (en) * | 2019-05-31 | 2020-01-31 | 长沙矿山研究院有限责任公司 | underground movable gravel cemented filling system |
-
2021
- 2021-04-13 CN CN202110391829.9A patent/CN113202550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434204A (en) * | 2011-10-13 | 2012-05-02 | 金川集团有限公司 | Mine waste rock and all tailing pipeline conveying filling system and filling method using same |
| CN102606206A (en) * | 2012-04-01 | 2012-07-25 | 西安建筑科技大学 | Mobile filling method for managing underground gobs |
| CN103590851A (en) * | 2013-10-25 | 2014-02-19 | 玉溪矿业有限公司 | Underground waste-rock concrete preparation, pumping and filling system and method |
| CN110005465A (en) * | 2019-03-25 | 2019-07-12 | 安徽开发矿业有限公司 | A kind of deads tailings collaboration consolidated fill method |
| CN210003328U (en) * | 2019-05-31 | 2020-01-31 | 长沙矿山研究院有限责任公司 | underground movable gravel cemented filling system |
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| CN113202550A (en) | 2021-08-03 |
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