CN106014412B - The method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining - Google Patents

The method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining Download PDF

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Publication number
CN106014412B
CN106014412B CN201610468088.9A CN201610468088A CN106014412B CN 106014412 B CN106014412 B CN 106014412B CN 201610468088 A CN201610468088 A CN 201610468088A CN 106014412 B CN106014412 B CN 106014412B
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China
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exploiting field
coal
ladder type
filling
coal column
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CN201610468088.9A
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Chinese (zh)
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CN106014412A (en
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冯国瑞
白锦文
郭军
戚庭野
张玉江
郭峰
张钰亭
宋凯歌
康立勋
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太原理工大学
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    • 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
    • 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
    • E21F15/005Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material

Abstract

The method for leaving coal column group in the residual exploiting field of filling second mining is constructed the invention discloses a kind of ladder type.This method is on the basis of exploration finds out that coal column group and column exploiting field domain distribution situation are left in residual exploiting field, construct and be mounted with filling mould, side Hu Liaocan leaves in exploiting field coal column group successively by the way of bilateral filling by column, and arranging short arm mechanized second mining working face, coal column group is left in the residual exploiting field of safe retrieving.The invention can not only realize the raising of coal resources recovery ratio and the lifting of Business Economic Benefit, and it is avoided that the dynamic disasters such as instantaneous unstability or " dominoes " unstability occur for the lower stope pillar obturation of various factors coupling effect, and then to ensure the long-time stability of stope pillar obturation after residual coal second mining.

Description

The method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining

Technical field

The present invention relates to technical field of coal exploitation, constructs the residual exploiting field of filling second mining more particularly, to a kind of ladder type and abandons coal mining The method of charcoal resource, is primarily adapted for use in residual exploiting field and abandons the safe working for adopting coal resources.

Background technology

Limited by history technology, economic dispatch condition, many collieries in China occur adopting when coal resources start thickness abandon it is thin, Adopt fertilizer lose it is thin, adopt it is excellent abandon bad and adopt easily phenomena such as abandoning difficulty, cause many abandoning for block coal column to be adopted;Meanwhile many mining areas are generally adopted The stability of stope overlying strata is maintained with barrier system exploitation, and then prevents or reduce mining influence to above ground structure, water body With the damage and failure of railway etc..Above-mentioned recovery activity so that stope leaves many coal column groups not of uniform size, crisscross.

Coal column group is left in the extensive preservation in many mining areas in China in residual exploiting field, especially since resource consolidation, Datong, The mining area such as Western Hills and the Lushui River peace is found more and more, its reserves is considerable.In recent years, with coal resources finiteness and its consumption The contradiction of demand unlimitedness becomes increasingly conspicuous, and the second mining that coal column group is left in residual exploiting field is increasingly becoming numerous researchers and engineering technology Personnel's focus of attention, it is with good extraction value.Recycle this part and abandon the coal resources adopted, can not only improve The recovery ratio of resource, enterprise economic benefit, and mine service-life can be extended, promoted sustainable development.

Chinese patent CN102758630A discloses a kind of strip-type filling displacement, arch (bridge) type filling is replaced, continous way is filled Fill the method changed and displacement back production faults protecting coal column is filled with compartment;Chinese invention patent CN1963149A discloses one kind The recovery method of replacement of banded coal under building by waste rock;Chinese invention patent CN102392643A is by setting under building Coal mining width and the width for retaining coal column, have exploited the coal resources of one fixed width, then by the way of filling mining first Secondary driving and back production have been carried out to retaining coal column, have effectively achieved the recycling that coal column is left under building;Chinese invention is special Sharp CN101725352A proposes a kind of method of filling solid and fully mechanizing and recovering room type coal pillar, eliminates room formula coal column nature, adopts Dead zone tight roof large area caving forms the security risk such as hurricane and the sinking of earth's surface large area;Chinese invention patent CN103527196A by the use of ground loess as the filler in goaf, coordinated using high speed motive force throwing machine and bull-dozer The mode of effect has carried out goaf backfill, and then realizes the displacement recycling of goaf room formula coal column.Aforementioned invention energy It is enough effectively recycle residual exploiting field abandon adopt leave coal column group, but rarely have the long-term steady of stope filling body after the concern residual coal of second mining It is qualitative.

After coal column group displacement second mining is left in residual exploiting field, stope filling body(Especially pillar obturation)Stress The load of integrated distribution can be gradually converted to, it is in long-term concentrfated load, adjacent coal seam mining influence, water in gob area, nature Under the coupling of factor such as ignition and stratum high-temperature, wall caving inbreak can from outward appearance to inner essence occur, and then loaded area occurs and subtracts Phenomena such as small and support strength reduction, and trigger fall damage.Expand when the shock wave that the instantaneous unstability of stope filling body produces shifts When being scattered to neighbouring obturation, the unstable failure of stope filling body " dominoes " formula may be triggered, and then trigger bump Deng dynamic disaster, and bring the damage and failure of subsidence and building, railway and water body etc..

To sum up, the method for leaving coal column group there is an urgent need for finding a kind of safety, science and the residual exploiting field of high efficiente callback, and then come real The safe second mining for adopting coal resources is now abandoned, and can ensure the long-time stability of stope filling body after the residual coal of second mining, is avoided multifactor The generation of the dynamic disaster such as instantaneous unstability or " dominoes " unstability under coupling.

The content of the invention

The present invention is intended to provide the method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining, can not only realize coal The raising of charcoal resource recovery ratio and the lifting of Business Economic Benefit, and it is avoided that the lower stope pillar filling of various factors coupling effect The dynamic disasters such as instantaneous unstability or " dominoes " unstability occur for body, and then to ensure stope pillar obturation after residual coal second mining Long-time stability.

The present invention is achieved by the following technical solutions:

The method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining, finds out that coal column group is left in residual exploiting field in exploration On the basis of the distribution situation of column exploiting field domain, construct and be mounted with filling mould, side is protected successively by the way of bilateral filling by column Coal column group is left in residual exploiting field, and arranges short arm mechanized second mining working face, realizes the safety that coal column group is left in residual exploiting field Recycling.The technical solution specifically follows the steps below:

(1)With reference to the original geology of Resource-exhausted mine, technical data, exploration finds out that coal column group is left in residual exploiting field and column is adopted The distributing position in region, draws the distributional pattern figure that coal column group and column exploiting field domain are left in residual exploiting field, investigates mine in the domain of column exploiting field Water gathers the preservation situation with pernicious gas;

(2)The basic parameter of ladder type construction filling is designed, including the bottom of ladder type construction obturation is long, hang down high, haunch and waist It is long.

(3)According to step(2)In determine ladder type construction filling parameters, construct and filling mould be installed;

(4)The stress of coal column group is left according to residual exploiting field, determines the intensity of ladder type construction obturation, and prepares filling Lotion;

(5)Under the action of filling pumps, by the way of bilateral filling by column, by step(4)The fill paste of preparation is equal The even residual exploiting field of injection is left in the column exploiting field domain of coal column both sides, it solidified, hardened in mould is filled, coal is left to residual exploiting field Column produces the effect of side shield;

(6)Arrange short arm mechanized second mining working face, filling side shield is constructed through ladder type using retrusive caving method second mining Residual exploiting field leave coal column;

(7)Treat step(6)In leave coal pillar mining and finish, repeat step(4)~(6)Construction technology, constructed using ladder type Hu Can exploiting fields in side adjacent to coal column group is left, make to abandon and adopt coal resources gradually safe second mining the mode of filling successively.

Preferably, coal column group is left as border coal column, safety pillar, construction coal column, section coal pillar, knife in the residual exploiting field One or several kinds of combinations of column coal column, strip coal pillar or room formula coal column.

Preferably, the step(1)In, find out that the width of coal column group is left in residual exploiting field using three-dimensional laser scanner exploration Degree, height, distributed areas and its unstability situation, understand column exploiting field domain distribution orientation, size and volume, by prospecting by boring, The accumulation of mine water and the preservation situation of pernicious gas in the method investigation column exploiting field domain that physical prospecting and chemistry exploration are combined.

Preferably, the step(2)The top bottom length of middle ladder type construction obturationaGrown for lower bottomb1/3, wherein Grow at top bottomaFor 3 ~ 8m, lower bottom lengthbFor 9 ~ 24m.

Preferably, the step(2)The vertical height of middle ladder type construction obturationhThe height phase of coal column is left with residual exploiting field Together.

Preferably, the step(2)The haunch of middle ladder type construction obturationαFor 20 ° ~ 75 °.

Preferably, the step(2)The waist length of middle ladder type construction obturationlAccording to vertical heighthAnd haunchαTo determine,l= h/sinα

Preferably, the step(3)In filling mould connected and form with bottom side of the template by oblique side template, the folder of the two Angle is 20 ° ~ 75 °;Filling the installation site of mould need to grow according to the lower bottom of ladder type construction obturation to determine.

Preferably, the step(3)In filling mould system is followed closely by wooden three-ply board or shape welded by steel material Into the plagioclase of oblique side template is equal with the waist length of ladder type construction obturation, and thickness is 5cm ~ 15cm;The width of bottom side of the template for 5 ~ 15m, thickness are 5cm ~ 15cm.

Preferably, the step(4)In fill paste aggregate select coal mine gob spoil, discarded concrete or One or more in alkaline residue, cementitious matter select the one or more in cement, flyash or discarded cotton fibre, and are aided with water and gather Carboxylic acid high efficiency water reducing agent;Fill paste is by aggregate:Cementitious matter:High-efficiency water-reducing agent of poly-carboxylic acid:Water=60% ~ 75%:8%~10%:2%~ 5%:15% ~ 25% mass percent is formulated, and the concentration of fill paste is 60% ~ 85%.

Preferably, the step(5)Intensity after middle ladder type construction obturation setting and hardening is 5 ~ 20MPa, can not only Ensure that the less movement and deformation of stope overlying strata generation after coal column group's second mining is left in residual exploiting field, and be conducive to ladder type construction obturation Long-time stability.

Beneficial effects of the present invention:

The invention is constructed and is mounted with the basis of exploration finds out that coal column group and column exploiting field domain distribution situation are left in residual exploiting field Mould is filled, side Hu Liaocan leaves in exploiting field coal column group successively by the way of bilateral slicing and filling by column, and arranges shortwall machine Coal column group is left in tool second mining working face, the residual exploiting field of safe retrieving.A kind of ladder type construction filling second mining of the disclosure of the invention is residual The method that coal column group is left in exploiting field, can not only realize the raising of coal resources recovery ratio and the lifting of Business Economic Benefit, and It is avoided that the dynamic disasters such as instantaneous unstability or " dominoes " unstability occur for the lower stope pillar obturation of various factors coupling effect, And then to ensure the long-time stability of stope pillar obturation after residual coal second mining.

Brief description of the drawings

Fig. 1 leaves coal column group and column exploiting field domain distributional pattern figure for residual exploiting field;

Fig. 2 is the parameter schematic diagram that ladder type constructs obturation;

Fig. 3 is ladder type construction filling mould schematic diagram;

Fig. 4 leaves coal column group's schematic diagram for the residual exploiting field of ladder type construction filling second mining.Wherein, Fig. 4-1 is ladder type construction filling Leave coal column schematic diagram in side Hu Can exploiting fields;Fig. 4-2 leaves coal column schematic diagram for the residual exploiting field of ladder type construction filling second mining;Fig. 4-3 Coal column schematic diagram is left for ladder type construction filling side Hu Can exploiting fields are neighbouring;Fig. 4-4 is adjacent for the residual exploiting field of ladder type construction filling second mining Closely leave coal column schematic diagram.

In figure:1-leave coal column;2-column exploiting field domain;3-ladder type constructs obturation;4-oblique side template;5-bottom side form Plate;aThe top bottom length of-ladder type obturation;bThe lower bottom length of-ladder type obturation;hThe vertical height of-ladder type obturation;α- ladder The haunch of formula obturation;lThe waist length of-ladder type obturation.

Embodiment

Following embodiments are intended to make schematic illustration and explanation to the present invention, not delimit the scope of the invention.

In order to have clearer understanding to technical goal, feature and the effect of the present invention, in conjunction with attached drawing to a kind of ladder type The method that coal column group is left in the residual exploiting field of construction filling second mining is described in further detail.

Numb Di Wan collieries are the Loufan County typical old ore deposits of resource scarcity type within the border, are faced with constant rate of production, improve productivity With the lifting problems such as economic benefit.In the 1980s, fiber crops Di Wan collieries 9 coal seam is exploited using tool post method, make Obtain the residual exploiting field of tool post formula and leave substantial amounts of coal column group.Coal column group is left in No. 9 coal seams residual exploiting field of tool post formula has good second mining Recovery value, increasingly becomes numerous researchers and engineers and technicians' focus of attention in recent years.Numb No. 9 coals in Di Wan collieries The safe second mining of coal column is left in layer tool post formula residual exploiting field, can not only recycle the coal resources of preciousness, but also can be to avoid Leave the dynamic disaster of coal column group unstability initiation in residual exploiting field.However, it is existing leave coal column second mining it is theoretical focus mostly on technology in Part fills, and mainly considers " displaced type " recycling that coal column group is left in residual exploiting field, but rarely has the residual stope filling body of concern in length Long-time stability under phase multifactor superposition.For the above situation, below in conjunction with the accompanying drawings to the implementation process of the present invention It is described in further detail.

Step 1, original geology, technical data with reference to numb Di Wan collieries, 9 are found out using three-dimensional laser scanner exploration Width, height, distributed areas and its unstability situation of coal column 1 are left in number coal seam residual exploiting field of tool post formula, understand point in column exploiting field domain 2 Cloth orientation, size, volume and its overlying strata are caving situation;The result shows that:Left in the residual exploiting field of tool post formula in numb No. 9 coal seams in Di Wan collieries Coal column 1 and column exploiting field domain 2 are alternately uniformly distributed, and the mean breadth for leaving coal column 1 is 16m, average height 11.7m, stability Preferably;The mean breadth in column exploiting field domain 2 is 40m, average height 11.7m, and overlying strata directly push up generation shearing inbreak;Draw fiber crops ground Coal column 1 and the distributional pattern figure in column exploiting field domain 2 are left in No. 9 coal seams in the gulf colliery residual exploiting field of tool post formula, as shown in Figure 1.

Step 2, the basic parameter of the residual exploiting field ladder type construction filling of design fiber crops Di Wan collieries 9 coal seam tool post formula, mainly Have:1. ladder type constructs a length of 4m in top bottom, a length of 12m of lower bottom of obturation 3;2. the vertical height of ladder type construction obturation 3 and No. 9 The height that coal column 1 is left in the residual exploiting field in coal seam is identical, is 11.7m;3. the haunch of ladder type construction obturation 3 is 50 °;4. ladder type structure The a length of 15.27m of waist of obturation 3 is made, as shown in Figure 2.

Step 3, according to the basic parameter of the ladder type construction obturation 3 determined in step 2, constructs ladder type construction filling mould Tool.Filling mould is formed by wooden three-ply board nail system, is made of oblique side template 4 and bottom side of the template 5, the angle of the two is 50 °.Tiltedly The plagioclase of side template 4 is 15.27m, thickness 10cm, and the length of bottom template is 10m, thickness 10cm, oblique side template 4 and bottom The tie point of side template 5 is equal with the lower bottom length of ladder type construction obturation to the distance for leaving coal column 1, is 12m, fills mould The lower bottom that the installation site of tool need to construct obturation according to ladder type is grown to determine.As shown in Figure 3.Coal column 1 is left in residual exploiting field The left and right sides installation ladder type construction filling mould.

Step 4, the stress of coal column 1 is left according to numb No. 9 coal seams in the Di Wan collieries residual exploiting field of tool post formula, determines ladder type The intensity of obturation 3 is constructed, and is gangue according to mass percent:Cement:High-efficiency water-reducing agent of poly-carboxylic acid:Water=60%:10%: 5%:25% ratio prepares fill paste;The concentration of fill paste is 74%.

Step 5, under the action of filling pumps, by the way of bilateral slicing and filling by column, by the filling of step 4 preparation Lotion is uniformly injected into numb No. 9 coal seams in the Di Wan collieries residual exploiting field of tool post formula and leaves in the column exploiting field domain 2 of 1 both sides of coal column, is filling it Solidification, hardening in mold filling tool 4, leave residual exploiting field coal column 1 and produce the effect of side shield;

Step 6, arranges short arm mechanized second mining working face, and obturation 3 is constructed through ladder type using retrusive caving method second mining Leave coal column 1 in the residual exploiting field of side shield;

Step 7, treats that the exploitation of coal column 1 is left in step 6 to be finished, the construction work of repeat step four, step 5 and step 6 Skill, Hu Can exploiting fields in side are neighbouring successively by the way of ladder type construction filling leaves coal column group, makes to abandon and adopts coal resources gradually safety Second mining.

The above is the preferred embodiment of the present invention, it is noted that do not depart from technical spirit of the present invention with Any improvement made on the premise of principle to above-mentioned implementation belongs to the protection model of technical solution of the present invention with polising Enclose.

Claims (9)

1. the method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining, it is characterised in that comprise the following steps:
(1)With reference to the original geology of Resource-exhausted mine, technical data, exploration finds out that coal column group and column exploiting field domain are left in residual exploiting field Distributing position, draw the distributional pattern figure that coal column group and column exploiting field domain are left in residual exploiting field, investigate mine water in the domain of column exploiting field and accumulate The poly- preservation situation with pernicious gas;
(2)The basic parameter of ladder type construction filling is designed, including the bottom of ladder type construction obturation is long, hang down high, haunch and waist length;
(3)According to step(2)In determine ladder type construction filling parameters, construct and filling mould be installed;
(4)The stress of coal column group is left according to residual exploiting field, determines the intensity of ladder type construction obturation, and prepares filling cream Body;
(5)Under the action of filling pumps, by the way of bilateral filling by column, by step(4)The fill paste of preparation is uniformly noted Enter residual exploiting field to leave in the column exploiting field domain of coal column both sides, it solidified, hardened in mould is filled, coal column production is left to residual exploiting field Raw side shield effect;
(6)Arrange short arm mechanized second mining working face, the residual of filling side shield is constructed through ladder type using retrusive caving method second mining Leave coal column in exploiting field;
(7)Treat step(6)In leave coal pillar mining and finish, repeat step(4)~(6)Construction technology, using ladder type construct fill Mode Hu Can exploiting fields in side are neighbouring successively leaves coal column group, make to abandon and adopt coal resources gradually safe second mining.
2. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute It is border coal column, safety pillar, construction coal column, section coal pillar, strip coal pillar, room formula coal column that coal column group is left in the residual exploiting field stated One or several kinds of combinations.
3. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(1)In, using three-dimensional laser scanner exploration find out residual exploiting field leave the width of coal column, height, distributed areas and Its unstability situation, understands distribution orientation, size and the volume in column exploiting field domain, is explored by prospecting by boring, physical prospecting and chemistry The accumulation of mine water and the preservation situation of pernicious gas in the method investigation column exploiting field domain being combined.
4. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(2)The top bottom length of middle ladder type construction obturationaGrown for lower bottomb1/3, its middle and upper part bottom lengthaFor 3 ~ 8m, under Grow at portion bottombFor 9 ~ 24m.
5. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(2)The vertical height of middle ladder type construction obturationhIt is identical that the height of coal column is left with residual exploiting field, haunchαFor 20 ° ~ 75 °, Waist is grownlAccording to vertical heighthAnd haunchαTo determine,l=h/sinα
6. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(3)Middle filling mould is connected by oblique side template with bottom side of the template to be formed, and the angle of the two is 20 ° ~ 75 °.
7. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 6, it is characterised in that institute The step of stating(3)Middle filling mould is followed closely system by wooden three-ply board or is welded and formed by steel material, the plagioclase of oblique side template with The waist length of ladder type construction obturation is equal, and thickness is 5cm ~ 15cm;The width of bottom side of the template is 5 ~ 15m, and thickness is 5cm ~ 15cm.
8. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(4)In fill paste aggregate select coal mine gob spoil, discarded concrete, one kind in alkaline residue or several Kind, cementitious matter selects the one or more in cement, flyash, discarded cotton fibre, and is aided with water and high-efficiency water-reducing agent of poly-carboxylic acid;Fill Lotion is filled out by aggregate:Cementitious matter:High-efficiency water-reducing agent of poly-carboxylic acid:Water=60% ~ 75%:8%~10%:2%~5%:15% ~ 25% quality hundred Ratio is divided to be formulated, the concentration of fill paste is 60% ~ 85%.
9. the method that coal column group is left in the residual exploiting field of ladder type construction filling second mining according to claim 1, it is characterised in that institute The step of stating(5)Intensity after middle ladder type construction obturation setting and hardening is 5 ~ 20MPa.
CN201610468088.9A 2016-06-24 2016-06-24 The method that coal column group is left in a kind of residual exploiting field of ladder type construction filling second mining CN106014412B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106321103B (en) * 2016-09-08 2018-04-13 中国矿业大学 A kind of solid filling collaboration artificial ore pillar recycling room formula coal column method
CN107657084B (en) * 2017-09-05 2019-10-01 太原理工大学 Compound residual exploiting field Upward mining feasibility based on sliding instability quantitatively judges method
CN107657085B (en) * 2017-09-05 2019-10-11 太原理工大学 A kind of quantitative judgement method of compound residual exploiting field Upward mining feasibility
CN108868878A (en) * 2018-06-25 2018-11-23 山东科技大学 A kind of house column type paste body filling displacement coal-mining method
CN109139100B (en) * 2018-09-04 2019-12-20 中国矿业大学 Inner injection substitution type supporting room type coal pillar recovery method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1963149A (en) * 2006-11-17 2007-05-16 中国矿业大学 Mining method for replacement of banded coal under building by waste rock
CN101725352A (en) * 2009-12-04 2010-06-09 中国矿业大学 Method for filling solid and fully mechanizing and recovering room type coal pillar
CN102937035A (en) * 2012-11-09 2013-02-20 四川省煤炭产业集团有限责任公司 Method for rock mining and filling in mine goaf
CN103104287A (en) * 2013-01-28 2013-05-15 山东科技大学 Stripe gob filling repeated-mining method
CN105240014A (en) * 2015-11-12 2016-01-13 中国矿业大学 Method for reclaiming house type remaining coal pillars based on filling and rebuilding of entry protection coal-pillar band

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1963149A (en) * 2006-11-17 2007-05-16 中国矿业大学 Mining method for replacement of banded coal under building by waste rock
CN101725352A (en) * 2009-12-04 2010-06-09 中国矿业大学 Method for filling solid and fully mechanizing and recovering room type coal pillar
CN102937035A (en) * 2012-11-09 2013-02-20 四川省煤炭产业集团有限责任公司 Method for rock mining and filling in mine goaf
CN103104287A (en) * 2013-01-28 2013-05-15 山东科技大学 Stripe gob filling repeated-mining method
CN105240014A (en) * 2015-11-12 2016-01-13 中国矿业大学 Method for reclaiming house type remaining coal pillars based on filling and rebuilding of entry protection coal-pillar band

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