CN111520156A - Energy-gathering jet rock breaking and fluidization carrying system and method - Google Patents
Energy-gathering jet rock breaking and fluidization carrying system and method Download PDFInfo
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- CN111520156A CN111520156A CN202010363286.5A CN202010363286A CN111520156A CN 111520156 A CN111520156 A CN 111520156A CN 202010363286 A CN202010363286 A CN 202010363286A CN 111520156 A CN111520156 A CN 111520156A
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- 239000011435 rock Substances 0.000 title claims abstract description 54
- 238000005243 fluidization Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004575 stone Substances 0.000 claims abstract description 78
- 239000003245 coal Substances 0.000 claims abstract description 53
- 238000005065 mining Methods 0.000 claims abstract description 27
- 238000005086 pumping Methods 0.000 claims abstract description 19
- 230000005641 tunneling Effects 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 239000002351 wastewater Substances 0.000 claims description 22
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1066—Making by using boring or cutting machines with fluid jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/126—Loading devices or installations
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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
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/002—Crushing devices specifically for conveying in mines
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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
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
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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
- 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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- 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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
-
- 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
- E21F15/08—Filling-up hydraulically or pneumatically
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an energy-gathered jet rock breaking and fluidization carrying system and a method, and the system comprises a pulse energy-gathered jet heading machine, a water-stone separation system, a stone crushing system, a stone pumping system and a filling coal mining hydraulic support, wherein the pulse energy-gathered jet heading machine comprises a pulse energy-gathered jet generating system, a loading part, a transferring part and a walking part; the invention is simple and easy to implement, adopts the pulse energy-gathered jet flow tunneling machine to crush the rock, can improve the rock crushing efficiency and reduce the dust amount, adopts the fluidization technology to carry the water-stone mixture, improves the tunneling efficiency of the rock roadway, directly conveys the crushed stone to the coal mine goaf for filling, can effectively reduce the ground collapse, reduces the goaf filling cost and improves the tunneling efficiency of the coal mine roadway.
Description
Technical Field
The invention relates to the field of roadway excavation, in particular to a cumulative jet rock breaking and fluidization carrying system and method.
Background
The hard rock roadway excavation is widely applied to engineering construction of coal mine roadways, traffic tunnels, hydraulic tunnels, municipal tunnels and the like, the total length of newly excavated roadways of key coal mines in China reaches over 12000km every year, wherein the rock roadway accounts for about 30 percent, and more than 95 percent of coal mine rock roadway excavation is carried out by adopting a drilling and blasting method, but the conventional drilling and blasting method has the prominent problems of poor roadway periphery forming, low efficiency, poor safety and the like.
At present, coal gangue is mostly used for filling a coal mine goaf in coal mining in China, but the coal gangue or coal gangue powder hydrate is conveyed from the ground to the underground for filling, a large amount of manpower, material resources and financial resources are consumed, and along with the gradual mining of deep coal resources in China, the filling effect of the coal gangue is not ideal under the condition of high ground stress.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide an energy-gathered jet rock breaking and fluidization carrying system and method, which can utilize pulse energy-gathered jet to break rock, quickly load and transport generated broken stones and waste water, avoid broken stones and accumulated water accumulation on a rock working face, realize quick tunneling of a rock roadway, directly convey the broken stones to a coal mine goaf to be filled through pneumatic conveying, and achieve the purpose of efficient and environment-friendly coal mining.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an energy-gathered jet rock breaking and fluidization carrying system which comprises a pulse energy-gathered jet tunneling machine, a water-stone separating system, a stone crushing system, a stone pumping system and a filling coal mining hydraulic support, wherein the pulse energy-gathered jet tunneling machine is provided with a pulse energy-gathered jet generating system, a loading part, a transferring part and a walking part, the water-stone separating system, the stone crushing system and the stone pumping system are connected together through belt transmission, the filling coal mining hydraulic support is arranged at a coal mining working face, a bottom-discharge type scraper conveyor is arranged on the rear side of the filling coal mining hydraulic support, a plurality of uniformly-distributed filling pipes are arranged between the bottom-discharge type scraper conveyor and a filling body, the directions of the filling pipes all point to the filling body and are respectively connected with the stone pumping system through feeding pipelines.
Preferably, the water supply system comprises a high-pressure pump, a water inlet and a water outlet of the high-pressure pump are respectively connected with a water tank and the pulse energy-gathering jet flow generation system, the high-pressure pump is electrically connected with the power supply system, and the water tank is communicated with the water delivery pump room through a water delivery pipeline.
Preferably, the wastewater treatment system comprises a wastewater bin arranged in the roadway, and wastewater generated in the water-stone separation system is conveyed to the wastewater bin through another water conveying pipeline.
Preferably, the water-stone separation system, the stone crushing system and the stone pumping system are arranged at the rear side of the pulse energy-gathering jet tunneling machine.
Preferably, the number of filling tubes is determined according to the filling volume area on site.
The invention also provides a using method of the energy-gathered jet rock breaking and fluidization carrying system, which specifically comprises the following steps:
a. firstly, starting a water feeding pump room arranged on the ground to provide a water source for a pulse energy-gathered jet flow tunneling machine, normally working the pulse energy-gathered jet flow tunneling machine to crush rocks at a certain point on a rock working surface, adjusting the position of a pulse energy-gathered jet flow generating system, and crushing a new target until the rock in the whole target area is crushed;
b. the method comprises the following steps that waste water and crushed stones are conveyed to a water-stone separation system through a loading part and a transfer part which are installed on a pulse energy-gathered jet flow heading machine, wherein the separated crushed stones are conveyed to a stone crushing system for crushing, the crushed stones are conveyed to a filling body area of a coal face through a stone pumping system and a conveying pipeline, and the separated waste water is conveyed to a waste water bin through a water conveying pipeline;
c. cutting coal according to a conventional coal mining method, spraying broken stones to a designated area of a filling body through a filling pipe, and tamping and filling the broken stone pile of the filling body by using a bottom discharge type scraper conveyor arranged on the rear side of a filling coal mining hydraulic support;
d. repeating the step b to finish the tamping filling of one step pitch;
e. and (4) after filling is completed at one step, moving the filling coal mining hydraulic support, the bottom discharge type scraper conveyor and the filling pipe forwards, repeating the steps a, b, c and d, and performing coal mining filling on the next step until filling of all goafs of the whole coal mining working face is completed.
Preferably, the crushed stone of the stone crushing system has the particle size of not more than 20 mm.
Preferably, in step b, the crushed stone is pneumatically conveyed to a filling body area of the coal face through a feeding pipeline by a stone pumping system.
The invention has the beneficial effects that:
1. by adopting a pulse energy-gathering jet technology, a high-frequency water hammer pressure can be generated on the surface of the rock by utilizing an energy-gathering nozzle and a pulse jet, cracks are generated in the rock, and the rock is further quickly crushed; compared with the traditional rock breaking mode, the technology does not need to carry out a drilling process in advance, the dust amount can be greatly reduced during rock breaking, the water consumption is low, the rock breaking efficiency is higher, and the rapid excavation of a rock roadway can be realized.
2. Adopt fluidization technique to carry out quick loading and transportation to the water stone mixture that broken back rock working face rubble and waste water formed, avoid during operation rock working face to produce rubble and pile up and ponding, carry water stone mixture to water stone piece-rate system after, the rubble is further broken into the littleer rubble of particle size, through building stones pumping system, adopts the pneumatic conveying mode, utilizes fluidization technique to carry the rubble to the coal mine goaf and does further processing.
3. Directly conveying crushed stone generated on a rock working face to a coal mine goaf in a fluidized manner under the shaft, and tamping and filling the filling body crushed stone by using a bottom-discharge scraper conveyor; compared with the traditional goaf filling mode, the goaf filling mode has the advantages that filling materials such as waste rocks do not need to be conveyed from the ground to the underground, goaf filling cost is reduced, filling efficiency is greatly improved, more stable support is provided for a coal mine roof, the risk of ground collapse is reduced, and meanwhile the goaf filling mode is simple in process and convenient to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an overall structural layout diagram of a rapid tunnel excavation system according to an embodiment of the present invention;
FIG. 2 is a structural layout diagram of a water-stone separating system, a stone crushing system and a stone pumping system in the embodiment of the invention;
fig. 3 is an overall work flow chart of a use method of the rapid tunnel excavation system in the embodiment of the invention.
In the figure: 1. a water pump house; 2. a wastewater bin; 3. a water delivery pipeline; 4. a feed line; 5. a power supply system; 6. a water tank; 7. a high pressure pump; 8. a pulse energy-gathered jet flow tunneling machine; 8-1, a walking part; 8-2, a loading part; 8-3, a pulse energy-gathered jet generating system; 8-4, a transport portion; 9. a water-stone separation system; 10. a stone crushing system; 11. a stone pumping system; 12. a rock face; 13. a coal face; 14. filling a coal mining hydraulic support; 15. a bottom discharge scraper conveyor; 16. a filling pipe; 17. and (4) filling the filler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, an energy-gathered jet rock breaking and fluidization carrying system comprises a pulse energy-gathered jet flow development machine 8 provided with a pulse energy-gathered jet flow generation system 8-3, a loading part 8-2, a transfer part 8-4 and a walking part 8-1, and also comprises a filling coal mining hydraulic support 14 arranged at a coal face 13, and a water-stone separation system 9, a stone crushing system 10 and a stone pumping system 11 which are arranged at the rear side of the pulse energy-gathered jet flow development machine 8 and are connected together through belt transmission, wherein the water-stone separation system 9 adopts a common stone crushing screening machine and a waste water collector to work in a combined manner, the stone crushing system 10 adopts a PEF150 x 250 jaw crusher, and the stone pumping system 11 adopts a stone pneumatic conveyor; the rear side of the filling coal mining hydraulic support 14 is provided with a bottom-discharge type scraper conveyor 15, a plurality of uniformly distributed filling pipes 16 are arranged between the bottom-discharge type scraper conveyor 15 and a filling body 17, the directions of the filling pipes 16 all point to the filling body 17 and are respectively connected with a stone pumping system 11 through a feeding pipeline 4, a pulse energy-gathering jet tunneling machine 8 is externally connected with a water supply system, and a water-stone separation system 9 is connected with a wastewater treatment system.
The water supply system comprises a high-pressure pump 7, a water inlet and a water outlet of the high-pressure pump 7 are respectively connected with a water tank 6 and a pulse energy-gathering jet flow generating system 8-3, the high-pressure pump 7 is electrically connected with a power supply system 5, and the water tank 6 is communicated with the water supply pump room 1 through a water conveying pipeline 3.
The wastewater treatment system comprises a wastewater bin 2 arranged in a roadway, and wastewater generated in the water-stone separation system 9 is conveyed to the wastewater bin 2 through another water conveying pipeline 3.
The number of the filling pipes 16 is determined according to the area of the filling body 17 on site.
The embodiment also provides a using method of the energy-gathered jet rock breaking and fluidization carrying system, which specifically comprises the following steps:
a. firstly, starting a water feeding pump room 1 arranged on the ground to provide a water source for a pulse energy-gathered jet flow tunneling machine 8, enabling the pulse energy-gathered jet flow tunneling machine 8 to normally work to crush rocks at a certain point of a rock working surface 12, adjusting the position of a pulse energy-gathered jet flow generating system 8-3, and crushing a new target until the crushing of rocks in the whole target area is completed;
b. the waste water and the crushed stones are conveyed to a water-stone separation system 9 through a loading part 8-2 and a transfer part 8-4 which are arranged on a pulse energy-gathered jet tunneling machine 8, wherein the separated crushed stones are conveyed to a stone crushing system 10 for crushing, the crushed stones are conveyed to a filling body 17 area of a coal face 13 through a stone pumping system 11 and a conveying pipeline 4, and the separated waste water is conveyed to a waste water bin 2 through a water conveying pipeline 3;
c. cutting coal according to a conventional coal mining method, spraying broken stones to a designated area of a filling body 17 through a filling pipe 16, and tamping and filling a broken stone pile of the filling body 16 by using a bottom-discharge type scraper conveyor 15 arranged on the rear side of a filling coal mining hydraulic support 14;
d. repeating the step b to finish the tamping filling of one step pitch;
e. and after filling is completed at one step, moving the filling coal mining hydraulic support 14, the bottom discharge type scraper conveyor 15 and the filling pipe 16 forwards, repeating the steps a, b, c and d, and performing coal mining filling on the next step until filling of all goafs of the whole coal face 13 is completed.
The crushed stone of the stone crushing system 10 has a particle size of not more than 20 mm.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A cumulative jet rock breaking and fluidization carrying system is characterized by comprising a pulse cumulative jet tunneling machine (8) provided with a pulse cumulative jet generating system (8-3), a loading part (8-2), a transferring part (8-4) and a walking part (8-1), and further comprising a water-stone separating system (9), a stone breaking system (10), a stone pumping system (11) and a filling coal mining hydraulic support (14) arranged at a coal mining working face (13) which are connected together through a belt, wherein a bottom-discharge type scraper conveyor (15) is arranged at the rear side of the filling coal mining hydraulic support (14), a plurality of uniformly distributed filling pipes (16) are arranged between the bottom-discharge type scraper conveyor (15) and a filling body (17), the directions of the filling pipes (16) are all directed to the filling body (17) and are respectively connected with the stone pumping system (11) through a feeding pipeline (4), the pulse energy-gathering jet flow heading machine (8) is externally connected with a water supply system, and the water-stone separation system (9) is connected with a wastewater treatment system.
2. The energy-gathered jet rock breaking and fluidization delivery system as claimed in claim 1, wherein the water supply system comprises a high-pressure pump (7), a water inlet and a water outlet of the high-pressure pump (7) are respectively connected with a water tank (6) and a pulse energy-gathered jet generating system (8-3), the high-pressure pump (7) is electrically connected with a power supply system (5), and the water tank (6) is communicated with the water supply pump room (1) through a water pipeline (3).
3. The energy-gathered jet rock breaking and fluidization delivery system as claimed in claim 2, wherein the wastewater treatment system comprises a wastewater bin (2) arranged in the roadway, and wastewater generated in the water-stone separation system (9) is conveyed to the wastewater bin (2) through another water conveying pipeline (3).
4. A shaped jet rock breaking and fluidisation carrier system as claimed in claim 1 in which the water and rock separation system (9), the rock breaking system (10) and the rock pumping system (11) are located behind a pulse shaped jet tunnelling machine (8).
5. A shaped jet rock breaking and fluidisation carrier system as claimed in claim 1 in which the number of filling pipes (16) is determined by the area of the in situ filling (17).
6. The use method of the energy-gathered jet rock breaking and fluidization carrying system as claimed in claim 3, is characterized by comprising the following steps:
a. firstly, starting a water feeding pump room (1) arranged on the ground to provide a water source for a pulse energy-gathered jet flow heading machine (8), enabling the pulse energy-gathered jet flow heading machine (8) to normally work to crush rocks at a certain point of a rock working surface (12), adjusting the position of a pulse energy-gathered jet flow generating system (8-3), and crushing a new target until the crushing of rocks in the whole target area is completed;
b. waste water and crushed stones are conveyed to a water-stone separation system (9) through a loading part (8-2) and a transfer part (8-4) which are arranged on a pulse energy-gathered jet flow heading machine (8), wherein the separated crushed stones are conveyed to a stone crushing system (10) for crushing, the crushed stones are conveyed to a filling body (17) area of a coal face (13) through a stone pumping system (11) and a conveying pipeline (4), and the separated waste water is conveyed to a waste water bin (2) through a water conveying pipeline (3);
c. cutting coal according to a conventional coal mining method, spraying broken stones to a designated area of a filling body (17) through a filling pipe (16), and tamping and filling broken stone piles of the filling body (16) by utilizing a bottom-discharge type scraper conveyor (15) arranged on the rear side of a filling coal mining hydraulic support (14);
d. repeating the step b to finish the tamping filling of one step pitch;
e. and after filling is completed in one step, moving the filling coal mining hydraulic support (14), the bottom discharge type scraper conveyor (15) and the filling pipe (16) forwards, repeating the steps a, b, c and d, and performing coal mining filling on the next step until filling of all goafs of the whole coal face (13) is completed.
7. Use of a shaped jet rock breaking and fluidisation carrier system as claimed in claim 6 in which the crushed rock of the rock breaking system (10) is no more than 20mm in size.
8. A method of using a shaped jet rock breaking and fluidisation conveyance system as claimed in claim 6 in which in step b the broken rock is pneumatically conveyed via a rock pumping system (11) through a feed conduit (4) to the area of the filling (17) of the coal face (13).
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CN117108283A (en) * | 2023-09-06 | 2023-11-24 | 中国矿业大学 | Fluidized coal mining method utilizing self energy storage of coal seam |
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CN112922617A (en) * | 2021-01-29 | 2021-06-08 | 中国科学院武汉岩土力学研究所 | Hydraulic mechanical combined rock breaking and wastewater treatment integrated TBM system and method |
CN117108283A (en) * | 2023-09-06 | 2023-11-24 | 中国矿业大学 | Fluidized coal mining method utilizing self energy storage of coal seam |
CN117108283B (en) * | 2023-09-06 | 2024-03-19 | 中国矿业大学 | Fluidized coal mining method utilizing self energy storage of coal seam |
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