CN108412494B - A kind of long-armed longitudinally oriented strip belt paste body filling process for stoping - Google Patents
A kind of long-armed longitudinally oriented strip belt paste body filling process for stoping Download PDFInfo
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- CN108412494B CN108412494B CN201810178076.1A CN201810178076A CN108412494B CN 108412494 B CN108412494 B CN 108412494B CN 201810178076 A CN201810178076 A CN 201810178076A CN 108412494 B CN108412494 B CN 108412494B
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- 238000005429 filling process Methods 0.000 title claims abstract description 19
- 238000011049 filling Methods 0.000 claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 claims abstract description 61
- 239000003245 coal Substances 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 5
- 230000005641 tunneling Effects 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 11
- 239000006210 lotion Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 244000025254 Cannabis sativa Species 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005381 potential energy Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 description 14
- 238000012423 maintenance Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- -1 gangue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a kind of long-armed longitudinally oriented strip belt paste body filling process for stoping, and in such a way that interval filling is adopted in jump, design offset opening is positioned at haulage gate, each offset parallel arrangement, each offset width is all the same, and each offset height is identical as coal seam average thickness, offset number consecutively from inside to outside；First back production odd number offset, fills after back production, then back production even number offset, filling；Back production tunneling direction is by haulage gate to air return way；Filling finishes in four times in stowing operation；The proportion of filler is spoil: 500~2000kg/m3, cement: 10~300kg/m3, flyash: 10~300kg/m3, water: 20~400kg/m3.Long-armed longitudinally oriented strip belt paste body filling process for stoping of the invention, strong applicability, at low cost, simple process, labor intensity of workers are low, filling effect is good and small to the destruction of natural environment.
Description
Technical field
The present invention relates to a kind of stope of coal mines technique, in particular to a kind of long-armed longitudinally oriented strip belt paste body filling back production work
Skill.
Background technique
Band back production is will to be divided into several bands by the coal seam of back production, and back production one (i.e. extraction band) retains one
(i.e. reservation coal column), with leaving the pillar top plate that do not adopt, it is possible to reduce ground shift and deformation.Paste body filling back production is
Goaf is filled with fillers such as gangue, flyash, is played a supporting role, then the method for carrying out back production, can be had
Effect reduces surface subsidence.Since band back production belongs to part back production, recovery ratio is too low, be easy to cause the wasting of resources；Item is taken back
It adopts and is combined with lotion stoping-and-filling, i.e., paste body filling is carried out to the extraction band in band back production, as retaining band before
Coal column, will retain band back production come out a kind of stoping method, recovery ratio can be increased substantially, and reduce coal mining pair
Destruction and pollution problem caused by natural environment.
It is filled back currently, China Mining University belongs to strip-type for the efficient fully mechanized mining layering mining technology with paste backfilling that my mine is related to
One kind of excavating technology, but this method has the following problems: first, the coalcutter as used in coal mining process and hydraulic branch
The fully-mechanized mining equipments such as frame are more demanding to roadway gradient, and the advance of the face is slow, coal mining low efficiency, therefore applicability is limited.Second,
Since mine roof pressure is larger, often there is pressure rack phenomenon in hydraulic support during the advance of the face, in stowing operation easily
There is running pulp, threatens worker safety.Third has to purchase the fully mechanized mining largely to match with filling process in stowing operation
Equipment, running pulp problem is serious after frame, and manual maintenance is costly, improves entreprise cost.4th, it fills after hydraulic support frames and adopts
Coal complex process, down-hole coal excavation-filling procedure is complicated, is not easy to grasp.5th, using a large amount of new equipments, the work in stowing operation
The large labor intensity of people, and equipment damage rate is high, maintenance task is also heavier.6th, the setting time of filler is short, hardness
It is small, design requirement cannot be reached, after mobile hydraulic support, obturation is acted on by the pressure of top plate, and deformation is big, be easy to cause ground
Face sedimentation.7th, in actual exploitation process, working face loses that coal phenomenon is serious, and the rate of extraction is lower.
Patent of invention (CN104863592, a kind of big structure sublevel drill and benching ore removal afterwards filling mining method) discloses
A kind of stoping method is divided into odd number stope and even number stope along orebody trend, and two adjacent odd and even numbers number are adopted
The public bottom structure in field, the back production of bottom structure are divided into 1/2 bottom structures of left and right two and carry out back production, stope mining and bottom
Portion's recycling is synchronous to intersect progress: first back production odd number stope does not fill；Corresponding 1/2 bottom of back production again, by mine after back production
Room and its corresponding goaf of corresponding 1/2 bottom structure are filled；Then back production even number stope, do not fill；Finally will
Ore pillar and its corresponding goaf of corresponding 1/2 bottom structure are filled.(CN106761912, one kind are suitable for patent of invention
Unstable formation efficiently on to route slicing and filling mining methods) disclose a kind of slicing and filling stoping method, first back production
Higher slice carries out supporting, then back production lower leaf to higher slice top plate or tunneling boring；According to ore in same panel horizontal direction
Stability, back production is carried out using one stop panel or two stop panel by the way of to neighbouring mineral building, to higher slice in a segmentation under
After slicing, filled；After obturation is stablized, the back production and filling of adjacent mineral building are carried out.Both stoping methods
When being filled to goaf, and not yet explicitly filling method, being likely to result in filling in stowing operation, mouth pressure is big down, easily
Running pulp problem occurs, there are security risks.
From the foregoing, it will be observed that when using strip-type paste body filling back production, the filling of filler is also in process of coal mining
An extremely important step, there is an urgent need to propose the effective technical solution of one kind to realize safe and efficient filling.
Summary of the invention
The purpose of the present invention is to provide a kind of long-armed longitudinally oriented strip belt paste body filling process for stoping, solve in exploitation process
Filling effect is poor, the technical issues of running pulp easily occurs.
In order to solve the above technical problems, the present invention provides a kind of long-armed longitudinally oriented strip belt paste body filling process for stoping, use
The mode for adopting interval filling is jumped, is included the following steps:
(1) design offset opening is located at haulage gate, and each offset parallel arrangement, each offset width is all the same, and each offset is high
Spend, offset from inside to outside number consecutively identical as coal seam average thickness；
(2) first back production odd number offset stays and sets even number offset and make coal column；
(3) it after the back production of odd number offset, is filled one by one；
(4) after odd number offset charges are stablized, then back production even number offset from inside to outside, until entire working face extraction is complete
Finish；
(5) it after the back production of even number offset, then is filled one by one, until entire working face extraction and filling finish；
The back production tunneling direction is by haulage gate to air return way；
In the filling step, first mouth production block wall carries out closed closure under the collateral lane of haulage gate, then is filled
It fills out, every offset fills finish in four times, and preceding charging quantity twice is equal, and accelerator is added in filler, fills every time
Time interval be not less than 24 hours；After every offset is filled with, start the filling of next offset；
Preferably, the filler includes following material, proportion are as follows:
500~2000kg/m of spoil3
10~300kg/m of cement3
10~300kg/m of flyash3
20~400kg/m of water3。
Preferably, every offset back production in two steps, using two fully-mechanized digging machines, first with a fully-mechanized digging machine along roof
Back production higher slice, then with another fully-mechanized digging machine back production lower leaf；The cutting sequence of the fully-mechanized digging machine is to open in the middle part of meeting head on from offset
Beginning feed carries out cutting according to the sequence of surrounding behind first centre, and each depth of cut is no more than 1.1m.
Preferably, when the offset higher slice is constructed, when from the air return way position 0.5~5m, during fully-mechanized digging machine big gun head is only cut
Between position, two help not to construct, perforation basal area be maintained at 4~4.5m2。
Preferably, when the offset higher slice is constructed, top plate adds the combination supporting side of anchor cable using anchor pole, metal mesh sheet
Formula.
Preferably, it after the complete higher slice of offset back production, removes, shrink drag conveyor, according to " first pick higher slice is laggard
Row lower leaf undercuts " principle crouched, undercuted.
Preferably, the offset higher slice construction technology process are as follows: safety inspection of relieving prepares；Proofread middle line；Comprehensive pick
Machine cut coal produces coal；Cleaning float coal moves back machine；Gib, permanent support；Fully-mechanized digging machine coal cutting enters subsequent cycle.
Preferably, the attal is agitated be formed uniformly lotion after, by paste body filling pump pressurization after, through subincline
Wear-resisting seamless steel pipe is delivered to working face in the pit air return way, in seamless steel pipe end pipeline exit, by wear-resisting seamless steel pipe
Swingable high-pressure hose identical with its bore is converted to, until filling offset place suitable for reading, is self-possessed using tunnel height difference as lotion
The filling power of obturation, lotion is filled in offset.
Preferably, offset high-pressure hose outlet height suitable for reading is suitable for reading higher than offset, increases potential energy, in favor of filling
The accumulation of material and enrich.
Preferably, the filling delivery site is successively are as follows: grass Filling Station；Subincline；Middle yard；Working face returns
Wind crossheading；It is suitable for reading to fill offset；Fill mouth under offset.
Compared with prior art, the beneficial effects of the present invention are:
(1) it after back production, carries out gob side entry retaining with can be convenient, reciprocating mining also may be implemented, can not only delay
Solution adopts the nervous problem of quasi- connecting, moreover it is possible to save a large amount of tunnelling and face moving expense.
(2) fully-mechanized mining equipment is simple, small to the requirement of working surface production condition, meets safety in production.
(3) heterogeneous goaf and ponding can be effectively prevented, eliminate safe hidden trouble.
(4) filling does not need special fully-mechanized mining equipment, can control running pulp problem, reduce waste, does not need excessive yet
Staff, reduce cost of ton coal.
(5) process is simple, few using equipment, operates conducive to worker.
(6) lower to the utilization rate of new equipment, the labor intensity of worker is small in stowing operation, low to the spoilage of equipment,
Maintenance task is light.
(7) setting time of filler is long, and the exploitation of even number offset is just carried out after odd number offset complete extraction, is filled
Filling chock material has time enough solidification, and intensity is big, can be practical by Land-Subsidence Control in the range of I grade of damage deformation allows
Effectiveness of reducing subsidence is preferable, reduces and collapses compensation and the over the ground destruction of face ecological environment.
(8) filler is done using gangue, has replaced coal resources, small to Overburden Rock Failure degree, top plate is not easy to be caving,
Protect the loss of groundwater resources and surface water.
(9) rate of extraction improves, can limits recycling scarce resource.High-quality caking coal is big in Australia as special and scarce coal resources
The country such as Leah, the U.S., Canada has all obtained strategic protection, becomes strategic raw material variety, is exploited using paste body filling
Upper group of coal can recycle rare 501.7 ten thousand tons of high-quality 1/3 coking coal more, extend mine service-life, not only provide to government
Revenue streams support local economic construction, return national strategy resource reclaim and make significant contribution.
Detailed description of the invention
Fig. 1 is 110902 working face pilot production section partial schematic plan views.
In figure: 1- haulage gate, 2- back production offset, 3- air return way.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention are described in detail.
Using 110902 working faces of Wuhai City Tian Yu Trade Co., Ltd. design as construction ground, 110902 working face coal seams are flat
Equal thickness 5.2m, strike length 300m.
Back production offset 2 is set, is arranged with haulage gate 1 in 55 ° of angles, offset opening is located at haulage gate 1, and each offset is flat
Row arrangement, number consecutively is 1,2,3,4 ... inside-out；Every offset length 150m, width 5m, offset height and coal seam are flat
Equal thickness is identical, is 5.2m.
Working face offset opens the door point positioned at working face haulage gate 1, constructs along roof.Before enabling, it will open the door first
Using after anchor cable Enhanced support at point, by sequence from outside to inside, the supporting before and after split doors within the scope of each 10m is carried out
It checks, after confirming safety, can open the door construction.By the way of jumping and adopting interval filling, odd number offset of first constructing stays and sets even number branch
Coal column is made in lane, wait constructed finish, offset filling finish and charges stablize after (freezing period 28d), back production from inside to outside idol
Number offset (staying the coal column set between odd number offset), until entire working face extraction finishes.
Each offset press 108 ° 29 ' 18 " true azimuth construction, 15 ° of mean obliquity, tunneling direction be by haulage gate 1 to
Air return way 3 is conducive to top plate and two helps the stabilization of coal column to form lesser space after guaranteeing the exploitation of offset higher slice, if
It counts every offset to construct in two times, using the two upper and lower layerings of construction respectively of EBZ-160 type fully-mechanized digging machine.
When construction higher slice, anchor pole is beaten with MQT-130 jumbolter in higher slice lane, the transport of 40T drag conveyor is applied
Work method.The driving height of higher slice is 2.8m, cutting sequence feed since offset meets head on middle part of fully-mechanized digging machine, according in elder generation
Between after the sequence of surrounding carry out cutting, each depth of cut must not exceed 1.1m, advance of working cycle 2.7m, top plate using anchor pole,
Metal mesh sheet adds the combination supporting mode of anchor cable.When apart from the 3 residue position 2m of air return way, fully-mechanized digging machine big gun head only cuts interposition
It sets, two help not to construct, and perforation basal area is maintained at 4-4.5m2, on the one hand guarantee that air return way 3 is passed through with back production offset 2 in this way
Distinguished and admirable timely adjustment, keeps distinguished and admirable stabilization after logical, furthermore closure section suitable for reading is small in backfilling process after can be convenient,
It can guarantee quality, it is most important that after the tunnel is in full exhaust ventilation, air quantity and wind speed can be adjusted to rapidly design and want
It asks, complies with relevant regulations.
Construct higher slice when coal cutting process flow are as follows: carry out relieve safety inspection and preparation first, then carry out
Line check and correction, then coal cutting is carried out and work of producing coal to coal ore in back production offset with fully-mechanized digging machine, float coal in offset is then cleared up, is exited
Fully-mechanized digging machine carries out gib and permanent support to the offset that back production finishes, then to remaining branch after fully-mechanized digging machine exits
Lane carries out same back production and supporting circulation, until finishing the exploitation of all coal ores and finishing the filling of all offsets.
It after each offset has disposably tunneled higher slice, removes, shrink drag conveyor and crouched, drawn at 10 meters of entrance to a lane
The principle at bottom, i.e. " progress lower leaf undercuts after first digging higher slice " is crouched, is undercuted, the remaining height of lower leaf in construction tunnel
2.8m。
After to all odd number offset back production, mouth production block wall block closed under the collateral lane of haulage gate 1,
It is filled using filler.Using the existing stowage unit of grass charging station.Spoil aggregate preparation system prepares
Attal design proportion (spoil 1231kg/m3, cement 250kg/m3, flyash 200kg/m3, water 371kg/m3) stirring is
After even formation lotion, by defeated through wear-resisting 219 × 15mm of the φ seamless steel pipe of subincline 16Mn after the pump pressurization of CTB200 paste body filling
It send to 110902 working face air return way of underground, in seamless steel pipe end, pipeline exit is converted to swingable identical bore
After near high-pressure hose extremely filling offset is suitable for reading, hose is then sent into filling branch entrance to a lane by underground operators, utilizes lane
Filling power of the height difference self weight in road as paste body filling body, lotion is filled in offset.When filling, mouth is on offset under offset
Mouth successively fills, and using lotion from properties of flow, offset is compacted；It, can will be in offset to guarantee filling effect when necessary
Filling pipe outlet raise, increase potential energy, in favor of the accumulation and compacting of charges.After every offset is full of, start next
The process of lane filling.
Fill delivery site successively are as follows: grass Filling Station, subincline, middle yard, 10902 working face return air are suitable
Slot, filling offset is suitable for reading, fills mouth under offset.
Since the block wall receiving pressure of mouth under offset is larger in stowing operation, in order to guarantee filling safety, using by several times
Filling is to reduce in stowing operation fill paste to the pressure of block wall.Every offset fills finish in four times, for the first time with
Secondary charging quantity is all 60m3, and 400kg accelerator is added when preceding filling twice every time, the charging quantity of third time is in offset
The 2/3 of residual volume, the 4th charging quantity are 1/3 of residual volume in offset, i.e., fill offset full.Filling finishes every time,
Must not be spaced with filling next time lower than 24 hours.
After to the filling of all odd number offsets, after material settling out to be filled, then back production even number offset from inside to outside, back production
Filling process is identical as odd number offset after technique and back production, until entire working face extraction and filling finish.
Long-armed longitudinally oriented strip belt paste body filling process for stoping provided by the invention, strong applicability, at low cost, simple process,
Labor intensity of workers is low, filling effect is good, and small to the destruction of natural environment.
A series of detailed description illustrating only for feasible embodiment of the invention described above,
They are not to limit the scope of the invention, in the knowledge that the technical field those of ordinary skill has
Interior, the various change made without departing from the purpose of the present invention all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of long-armed longitudinally oriented strip belt paste body filling process for stoping, which is characterized in that in such a way that interval filling is adopted in jump, packet
Include following steps:
(1) design offset opening is located at haulage gate, and each offset parallel arrangement, each offset width is all the same, each offset height with
Coal seam average thickness is identical, offset number consecutively from inside to outside；
(2) first back production odd number offset stays and sets even number offset and make coal column；
(3) it after the back production of odd number offset, is filled one by one；
(4) after odd number offset charges are stablized, then back production even number offset from inside to outside, until entire working face extraction finishes；
(5) it after the back production of even number offset, then is filled one by one, until entire working face extraction and filling finish；
The back production tunneling direction is by haulage gate to air return way；
In the filling step, first mouth production block wall carries out closed closure under the collateral lane of haulage gate, then is filled, often
Offset fills in four times to be finished, and preceding charging quantity twice is equal, and accelerator is added in filler, the time filled every time
Interval is not less than 24 hours；After every offset is filled with, start the filling of next offset.
2. long-armed longitudinally oriented strip belt paste body filling process for stoping as described in claim 1, it is characterised in that: the filler
Including following material, proportion are as follows:
500~2000kg/m of spoil3
10~300kg/m of cement3
10~300kg/m of flyash3
20~400kg/m of water3。
3. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 2, it is characterised in that: every offset
Back production in two steps, using two fully-mechanized digging machines, first with a fully-mechanized digging machine along roof back production higher slice, then with another fully-mechanized digging machine
Back production lower leaf；The fully-mechanized digging machine cutting sequence be since offset meet head on middle part feed, according to behind first centre surrounding it is suitable
Sequence carries out cutting.
4. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 3, it is characterised in that: divide on the offset
When layer construction, when from the air return way position 0.5~5m, fully-mechanized digging machine big gun head only cuts middle position, and two help not to construct.
5. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 4, it is characterised in that: divide on the offset
When layer construction, top plate adds the combination supporting mode of anchor cable using anchor pole, metal mesh sheet.
6. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 5, it is characterised in that: the offset back production
It after complete higher slice, removes, shrink drag conveyor, crouched according to the principle of " progress lower leaf undercuts after first digging higher slice ",
It undercuts.
7. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 6, it is characterised in that: divide on the offset
Layer construction technology process are as follows: safety inspection of relieving prepares；Proofread middle line；Fully-mechanized digging machine coal cutting is produced coal；Cleaning float coal moves back machine；Face
When supporting, permanent support；Fully-mechanized digging machine coal cutting enters subsequent cycle.
8. long-armed longitudinally oriented strip belt paste body filling process for stoping as described in claim 1, it is characterised in that: the attal
It is agitated be formed uniformly lotion after, by paste body filling pump pressurization after, be delivered to underground work through the wear-resisting seamless steel pipe of subincline
Face air return way is converted to wear-resisting seamless steel pipe identical with its bore swingable in seamless steel pipe end pipeline exit
High-pressure hose, until filling offset place suitable for reading, is self-possessed as the filling power of paste body filling body using tunnel height difference, lotion is filled with
In offset.
9. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 8, it is characterised in that: the offset is suitable for reading
High-pressure hose outlet height be higher than offset it is suitable for reading, increase potential energy, in favor of filler accumulation and enrich.
10. long-armed longitudinally oriented strip belt paste body filling process for stoping as claimed in claim 9, it is characterised in that: the filling is defeated
Send place successively are as follows: grass Filling Station；Subincline；Middle yard；Working face air return way；It is suitable for reading to fill offset；Filling
Mouth under offset.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810178076.1A CN108412494B (en) | 2018-03-05 | 2018-03-05 | A kind of long-armed longitudinally oriented strip belt paste body filling process for stoping |
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| CN201810178076.1A CN108412494B (en) | 2018-03-05 | 2018-03-05 | A kind of long-armed longitudinally oriented strip belt paste body filling process for stoping |
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| CN110593874B (en) * | 2019-10-09 | 2020-12-01 | 中国矿业大学 | Full-filling method for strong and weak full mining of coal mine |
| CN111140233B (en) * | 2020-04-07 | 2020-08-07 | 北京中矿创新联盟能源环境科学研究院 | Pillar-free advancing coal mining method for thin coal seam |
| CN111828005B (en) * | 2020-07-24 | 2021-03-30 | 北京中矿创新联盟能源环境科学研究院 | Face mining method |
| CN112127889B (en) * | 2020-09-09 | 2022-04-22 | 湖北杉树垭矿业有限公司 | Strip wet-type filling roof-contacting mining method |
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| CN103696771B (en) * | 2013-12-18 | 2015-06-10 | 中国矿业大学 | Skip-mining type wangeviry stope branch roadway filling and coal mining method |
| CN104481536B (en) * | 2014-11-13 | 2017-02-08 | 中国矿业大学 | Cover rock crack and surface subsidence controlled digging, mining and filling parallel operation coal mining method |
| CN104500070B (en) * | 2014-11-27 | 2017-02-22 | 中国煤炭科工集团太原研究院有限公司 | Continuous coal mining machine paste filling mining method |
| CN104775817B (en) * | 2015-03-05 | 2016-12-28 | 路彬 | Full negative pressure Lian Cailian fills step-by-step replacement railways and water-bodies method |
| CN106522948A (en) * | 2016-11-25 | 2017-03-22 | 山东科技大学 | Short-wall waste rock gluing continuous mining and continuous filling mining method |
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