CN110130896A - A kind of working face pillar filling mining method - Google Patents

A kind of working face pillar filling mining method Download PDF

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Publication number
CN110130896A
CN110130896A CN201910450137.XA CN201910450137A CN110130896A CN 110130896 A CN110130896 A CN 110130896A CN 201910450137 A CN201910450137 A CN 201910450137A CN 110130896 A CN110130896 A CN 110130896A
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CN
China
Prior art keywords
filling
cylinder
working
mining
mouth
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN201910450137.XA
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Chinese (zh)
Inventor
李猛
张吉雄
陈杨
孟国豪
崔志中
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Publication date
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Priority to CN201910450137.XA priority Critical patent/CN110130896A/en
Publication of CN110130896A publication Critical patent/CN110130896A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/18Methods of underground mining; Layouts therefor for brown or hard coal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings

Abstract

The invention discloses a kind of working face pillar filling mining methods, in goaf, organ timbering body filling cylinder is arranged in parallel along working face, filling cylinder piles up composition using square brick, filling mouth is topmost equipped in filling cylinder, working face coal mining finishes, porous bottom-dump conveyer is moved to top beam rear portion and the filling mouth top for making its discharge port be located at filling cylinder after filling bracket, open dumping pit discharging, each filling cylinder is full of with dilatancy filler, after close discharge port, porous bottom-dump conveyer is moved into top beam front after bracket, the filling mouth of closing filling cylinder and the filling hydraulic support coal cutting that moves forward, into subsequent cycle.The chamber space structure that goaf is ceiling by several filling cylinder fulcrums and directly top or old rimrock body.This technique need to only enrich 10~20% goaf, just can be effectively controlled top plate and be not caving and do not settle with earth's surface, be preferably minimized filling cost, the packing job time is reduced to most short, coal mining production efficiency and remains to highest.

Description

A kind of working face pillar filling mining method
Technical field
The invention belongs to filling mining technical fields, and in particular to a kind of working face pillar filling mining method.
Background technique
In order to control the damage of caused ground settlement and traditional coal-mining method to environment of mining, coal mining company is in recent years Come the filling method coal winning technology for having selected Quan Caiquan to fill.This filling method coal winning technology achieves ground settlement and environmental nuisance Good control effect, but there is also main insufficient: first is that because Quan Caiquan to fill the amount of space for needing to fill relatively large, fill The filling chock material contradiction that supply falls short of demand is more prominent, and filling procedure material cost is higher;Second is that because filling operation amount is relatively large, The activity duration of normal coal mining process is occupied, the original production efficiency of coal working face is greatly lowered.Therefore occur adopting Dead zone part filling coal mining method reduces filling cost to reduce filling operation amount and filler usage amount, improves production effect Rate.
Pillar filling mining belongs to goaf part placement method, at present for the research of pillar filling mining also not few Number, but it primarily focuses on filler and fills the research of cylinder composition material and reinforcement means, for specific stower It is very few described in skill and matching relationship with coal face, that is, lack the equipment such as filling bracket, porous bottom-dump conveyer, drain hole Specific implementation step and its between mutual cooperation method.It is in number of patent application: 201610270405.6, patent name is: A kind of specific implementation measure of pillar placement method is described in " a kind of pile pillar filling template and its application method ", but it is led Lay particular emphasis on filler and fill the research of cylinder composition material and reinforcement means, for specific filling process and with coal mining Description is not made in the cooperation in face.In view of above-mentioned problem, it is current for inventing a kind of working face pillar filling mining method Urgent problem to be solved.
Summary of the invention
The present invention is intended to provide a kind of working face pillar filling mining method, coal is pressed in liberation " under three ", improves mine resource Recovery ratio simultaneously, the problems such as alleviating subsidence bring building, ecological disruption.
Technical solution: a kind of working face pillar filling mining method of the invention comprises the following specific steps that:
1. being sequentially arranged the filling cylinder of platoon leader's cube in goaf along its parallel direction in coal working face:
(1) pass through CONTROL OF STRATA MOVEMENT vital edge and field observation, the confirmation directly breaking span P of top or old rimrock body;
(2) the coal mining height H that the length M and width N of each filling cylinder are 2~3 times is designed;
(3) the vertical and parallel spacing of design filling cylinder is L=P × (1/2~2/3);
2. piling up composition filling cylinder using square brick and cement, and side is equipped with filling mouth on one side thereof;
3. working face coal mining finishes, porous bottom-dump conveyer is moved to top beam rear portion after filling bracket and makes its discharge port Positioned at the filling mouth top of filling cylinder;
4. opening dumping pit discharging, each filling cylinder is full of with dilatancy filler;
5. after the completion of filling operation, closing discharge port, porous bottom-dump conveyer is moved into top beam front after bracket, closing The filling mouth of cylinder is filled, then Forward filling hydraulic support coal cutting, into subsequent cycle;
6. dilatancy filler consolidation time is 9~11 hours, during this period, obturation can gradually be expanded to and sufficiently connect Top, to reach enabling capabilities;
7. after a coal face, it is fulcrum and straight that entire goaf, which is formd by several pier stud type consolidated fillers, It connects top or old rimrock body is the chamber space structure of ceiling.
The working face pillar filling mining method, it is characterised in that the dilatancy filler be by base-material, Swelling agent, accelerator, curing agent and water composition, wherein base-material is flyash, spoil, and swelling agent is the mixing of zinc powder and land plaster Object, accelerator are lime, and curing agent is cement.
The working face pillar filling mining method, it is characterised in that the filling mouth is circular hole, fills the straight of mouth Diameter is 10~20cm, and positioned at the top of filling cylinder, filling completes rear enclosed and fills mouth.
The utility model has the advantages that this method only needs the goaf by 10~20% to enrich, just can be effectively controlled top plate be not caving and Earth's surface does not settle, and the quantity required of filler has been reduced at least as a result, and the direct cost of filling process falls below minimum, fills The activity duration for filling out process has been reduced to most short, and the production efficiency of coal mining process remains to highest.
Detailed description of the invention
Fig. 1 is goaf structural schematic diagram.
Fig. 2 is that pillar fills hydraulic support.
Fig. 3 is filling process flow chart.
Wherein: 1- has filled cylinder;The unfilled cylinder of 2-;3- fills hydraulic support;4- unminds coal body;5- is unloaded at porous bottom Formula conveyer;6- discharge port.
Specific embodiment
Present invention will now be described in detail with reference to the accompanying drawings., referring to attached drawing 1,2,3.
1. as Fig. 1 is sequentially arranged the filling cylinder of platoon leader's cube in goaf along its parallel direction in coal working face 1、2:
(1) pass through theoretical calculation and field observation, the confirmation directly breaking span P of top or old rimrock body;
(2) the coal mining height H that the length M and width N of each filling cylinder are 2~3 times is designed;
(3) the vertical and parallel spacing of design filling cylinder is L=P × (1/2~2/3);
2. piling up composition filling cylinder using square brick and cement, and side is equipped with filling mouth on one side thereof;
3. working face coal mining finishes, porous bottom-dump conveyer 5 is moved to top beam rear portion after filling bracket and makes its discharging Mouth 6 is located at the filling mouth top of filling cylinder;
4. opening 6 discharging of discharge port, each filling cylinder is full of with dilatancy filler;
5. after the completion of filling operation, closing discharge port 6, porous bottom-dump conveyer 5 is moved into top beam front after bracket, envelope The filling mouth of filling cylinder is closed, then Forward filling 3 coal cutting of hydraulic support, into subsequent cycle;
6. dilatancy filler consolidation time is 9~11 hours, during this period, obturation can gradually be expanded to and sufficiently connect Top, to reach enabling capabilities;
7. after a coal face, it is fulcrum and straight that entire goaf, which is formd by several pier stud type consolidated fillers, It connects top or old rimrock body is the chamber space structure of ceiling.
The working face pillar filling mining method, it is characterised in that the dilatancy filler be by base-material, Swelling agent, accelerator, curing agent and water composition, wherein base-material is flyash, spoil, and swelling agent is the mixing of zinc powder and land plaster Object, accelerator are lime, and curing agent is cement.
The working face pillar filling mining method, it is characterised in that the filling mouth is circular hole, fills the straight of mouth Diameter is 10~20cm, and positioned at the top of filling cylinder, filling completes rear enclosed and fills mouth.
Illustrate concrete operation method of the invention below by specific embodiment:
The specific coal seam combined with a thickness of 2 meters is filled out mining method to a kind of working face pillar of the present invention and is illustrated
1. filling out size to determine:
1000 meters of length are inclined to, coal seam thickness average out to 2 in the following, 150 meters of its strike length in working face relative position village Rice, 6 °~10 ° of inclination angle.It is surveyed through exploitation, the breaking span that First Weighting Interval of Main directly pushes up is 20~24 meters;
2. design it is each filling cylinder 1 width be 4~5 meters, length is 5~6 meters, fill the parallel of cylinder and vertically across Degree is 10~11 meters, is evenly arranged 11 filling cylinders along multiple operation face direction;
3. piling up composition filling cylinder using square brick and cement, and side is equipped with filling mouth on one side thereof;
4. working face coal mining finishes, porous bottom-dump conveyer 5 is moved to top beam rear portion after filling bracket and makes its discharging Mouth 6 is located at the filling mouth top of filling cylinder;6 discharging of discharge port is opened, is full of each filling cylinder with dilatancy filler, It is as follows that its dilatancy filler specifically matches situation: flyash, red mud and tailings 400~550kg, 0.8~1.1kg of zinc powder, 7~9kg of land plaster, 80~90kg of lime, cement and clinker 30~40kg, 700~800kg of water.
5. dilatancy filler realizes dilatancy solidification after 9~11 hours, obturation reaches enabling capabilities;
6. repeat 3.~5. the step of, until a working face terminates.Finally, several are formd in goaf uniformly The pillar obturation of distribution.
By using this pillar filling mining method, pack completeness is 12% or so.It is observed that measurement reaches following effect: Mine 2 meters of height, 300 meters of buried depth, in the case where 1000 meters × 150 meters of limit of mining, 2~4 milli of ground settlement average out to Rice, earth's surface road and house are not destroyed, and working section recovery reaches 99%.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (4)

1. a kind of working face pillar filling mining method of the invention, comprises the following specific steps that:
1. being sequentially arranged the filling cylinder of platoon leader's cube in goaf along its parallel direction in coal working face:
2. piling up composition filling cylinder using square brick and cement, and side is equipped with filling mouth on one side thereof;
3. working face coal mining finishes, porous bottom-dump conveyer is moved to top beam rear portion after filling bracket and is located at its discharge port Fill the filling mouth top of cylinder;
4. opening dumping pit discharging, each filling cylinder is full of with dilatancy filler;
5. after the completion of filling operation, closing discharge port, porous bottom-dump conveyer is moved into top beam front after bracket, closing filling The filling mouth of cylinder, then Forward filling hydraulic support coal cutting, into subsequent cycle;
6. dilatancy filler consolidation time is 9~11 hours, during this period, obturation can gradually be expanded to and sufficiently connect top, To reach enabling capabilities;
7. after a coal face, it is by fulcrum and with straight that entire goaf, which is formd by several pier stud type consolidated fillers, It connects top or old rimrock body is the chamber space structure of ceiling composition.
2. requiring the working face pillar filling mining method according to right 1, it is characterised in that: the design parameter of step 1. is set Meter method are as follows:
(1) pass through CONTROL OF STRATA MOVEMENT vital edge and field observation, the confirmation directly breaking span P of top or old rimrock body;
(2) the coal mining height H that the length M and width N of each filling cylinder are 2~3 times is designed;
(3) the vertical and parallel spacing of design filling cylinder is L=P × (1/2~2/3).
3. requiring the working face pillar filling mining method according to right 1, it is characterised in that: the dilatancy filling material Material is made of base-material, swelling agent, accelerator, curing agent and water, wherein base-material be flyash or spoil, swelling agent be zinc powder and The mixture of land plaster, accelerator are lime, and curing agent is cement.
4. requiring the working face pillar filling mining method according to right 1, it is characterised in that: the filling mouth is circle Hole, the diameter for filling mouth is 10~20cm, and positioned at the top of filling cylinder, filling completes rear enclosed and fills mouth.
CN201910450137.XA 2019-06-26 2019-06-26 A kind of working face pillar filling mining method Pending CN110130896A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111206956A (en) * 2020-01-10 2020-05-29 中国矿业大学 Method for filling and reinforcing left coal pillars in goaf by room-type coal mining method
WO2021103193A1 (en) * 2019-11-29 2021-06-03 山东科技大学 Goaf crossing filling method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2285799C1 (en) * 2005-06-24 2006-10-20 Государственное образовательное учреждение высшего профессионального образования СИБИРСКИЙ ГОСУДАРСТВЕННЫЙ ИНДУСТРИАЛЬНЫЙ УНИВЕРСИТЕТ Method for medium-thickness steep mineral seam development along with goaf filling
CN202370562U (en) * 2011-12-15 2012-08-08 山西阳泉盂县东坪煤业有限公司 Solid waste filling coal mining hydraulic support frame
CN103291300A (en) * 2013-05-20 2013-09-11 中国矿业大学 Mounting method of immediate roof dynamic monitor of comprehensive mechanized solid-filling coal mining
CN203291791U (en) * 2013-04-13 2013-11-20 淄博王煤矿业有限公司 Preparing and conveying self-service integrated equipment of slurry material
CN103742146A (en) * 2014-01-17 2014-04-23 淄博王煤矿业有限公司 Coal mining technology by pier stud type filling method
RU2514933C1 (en) * 2013-02-13 2014-05-10 Федеральное государственное бюджетное учреждение науки Институт угля Сибирского отделения Российской академии наук (ИУ СО РАН) Method of layer mining of high steeply inclined coal bed with extraction of coal from bedding pack
CN107060876A (en) * 2017-05-26 2017-08-18 新疆大学 Concrete filled steel tube pier stud gob side entry retaining active support structure and its construction method
CN107882566A (en) * 2017-10-31 2018-04-06 中国矿业大学(北京) A kind of gob-side entry retaining method for not influenceing coal mining process

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2285799C1 (en) * 2005-06-24 2006-10-20 Государственное образовательное учреждение высшего профессионального образования СИБИРСКИЙ ГОСУДАРСТВЕННЫЙ ИНДУСТРИАЛЬНЫЙ УНИВЕРСИТЕТ Method for medium-thickness steep mineral seam development along with goaf filling
CN202370562U (en) * 2011-12-15 2012-08-08 山西阳泉盂县东坪煤业有限公司 Solid waste filling coal mining hydraulic support frame
RU2514933C1 (en) * 2013-02-13 2014-05-10 Федеральное государственное бюджетное учреждение науки Институт угля Сибирского отделения Российской академии наук (ИУ СО РАН) Method of layer mining of high steeply inclined coal bed with extraction of coal from bedding pack
CN203291791U (en) * 2013-04-13 2013-11-20 淄博王煤矿业有限公司 Preparing and conveying self-service integrated equipment of slurry material
CN103291300A (en) * 2013-05-20 2013-09-11 中国矿业大学 Mounting method of immediate roof dynamic monitor of comprehensive mechanized solid-filling coal mining
CN103742146A (en) * 2014-01-17 2014-04-23 淄博王煤矿业有限公司 Coal mining technology by pier stud type filling method
CN107060876A (en) * 2017-05-26 2017-08-18 新疆大学 Concrete filled steel tube pier stud gob side entry retaining active support structure and its construction method
CN107882566A (en) * 2017-10-31 2018-04-06 中国矿业大学(北京) A kind of gob-side entry retaining method for not influenceing coal mining process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021103193A1 (en) * 2019-11-29 2021-06-03 山东科技大学 Goaf crossing filling method
CN111206956A (en) * 2020-01-10 2020-05-29 中国矿业大学 Method for filling and reinforcing left coal pillars in goaf by room-type coal mining method

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Application publication date: 20190816