CN105464700A - Method for determining length of filling segment of fully mechanized mining and filling mixed mining working face - Google Patents

Method for determining length of filling segment of fully mechanized mining and filling mixed mining working face Download PDF

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Publication number
CN105464700A
CN105464700A CN201510925707.8A CN201510925707A CN105464700A CN 105464700 A CN105464700 A CN 105464700A CN 201510925707 A CN201510925707 A CN 201510925707A CN 105464700 A CN105464700 A CN 105464700A
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filling
work plane
mining
day
adopt
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CN105464700B (en
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张吉雄
孙强
张强
闫浩
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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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    • 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

Provided is a method for determining length of a filling segment of a fully mechanized mining and filling mixed mining working face. The method comprises: firstly, according to production capacity requirement of a mine, determining total length of a fully mechanized mining and filling mixed mining working face, then, according to a principle that waste rock output of a rock protective layer working face in each day is equal to mass of a filling material which is filled in a goaf of the filling segment of the fully mechanized mining and filling mixed working face, initially determining a length range of the filling segment working face, finally, according to overlying strata fracture development of the fully mechanized mining and filling mixed mining working face on site and stratum moving characteristic requirements, determining the length of the filling segment working face. The determining method is simple and practical, and provides engineering technical guidance for popularization and application of a fully mechanized mining and filling mixed mining technology, and further promotes an integrated green mining circulating mode of mining, selecting, filling, and mining of efficient filling coal mining, in the integrated green mining circulating mode, waste rocks of an underground coal mine do rise, and the waste rocks are selected by washing and are refilled in the goaf. The method expands popularization and application range of the filling coal mining.

Description

Combine and adopt-filling mixed mining work plane filling segment length defining method
Technical field
The present invention relates to filling coal mining technical field, particularly one be applicable to combine adopt-filling mixed mining work plane filling segment length defining method.
Background technology
In recent years, solid filling coal-mining technique has obtained popularization and application as the Green Technique in Coal Mining of one liberation " three times " pressure coal in the multiple mining area of China, a large amount of coal resources are successfully liberated, downhole gangue not gug simultaneously, reduce ground spoil stacking and pollute green idea and strengthen further, employing down-hole, increasing mining area coal preparation technology, realizes downhole gangue washing, the green circulatory exploitation integrated technique in washing gangue refill goaf.But along with the high tension coal mining of coal resource, a lot of colliery is when next stage coal seam extends exploitation, and run into hyposmosis high methane dangerous seam with potential, the exploitation in this type of coal seam has safety hazard, and seam mining cost is high, has had a strong impact on mine service-life.Therefore; rock topping in exploitation; take out protected coal seam gas in advance; rock topping spoil is backfilling in protected seam goaf as filler; realize spoil not gug; for the purpose of coal and gas power phenomenon, technology is arisen at the historic moment, and considers mine output and gas drainage under suction effect in this technology, and protected seam adopts to combine adopts-filling hybrid working face exploitation.
Appropriate design is combined and is adopted-timely the process of filling mixed mining work plane filling segment length for downhole gangue, the smooth enforcement of filling coal mining, and gas drainage under suction effect etc. has important influence.Therefore, a kind of combining of research adopts-filling mixed mining work plane filling segment length defining method, combines to adopt-the filling mixed mining research means that could not lack and research method, have important practical significance and wide application prospect under becoming conditions of similarity.
Summary of the invention
The object of the invention is for Problems existing in prior art, provide that a kind of method is simple, safe and reliable, engineer applied is strong comprehensively adopts-filling mixed mining work plane filling segment length defining method.
Of the present invention combining adopts-filling mixed mining work plane filling segment length defining method: first; according to mine capacity Demand Design hybrid working face total length; then; produce cash amount according to rock topping work plane spoil every day and adopt-principle that the attal quality that is filled with of filling mixed mining work plane filling section goaf is equal with comprehensive; preliminary design is combined and is adopted-filling mixed mining work plane filling segment length scope; finally; according to on-the-spot mixed mining work plane overlying strata cranny development and strata movement feature requirement, determine filling section face length.
Described rock protective coat extracted spoil every day goes out cash amount and is drawn by following formula:
M 2=μv 2L 2H yη(1)
In formula:
M 2-rock topping produces cash amount every day, t/ day;
μ-washing rate under waste shaft, %;
V 2-topping work plane advance rate every day, m/ day, is determined by coal winning machine cutting bit and coal cutting number of times;
L 2-topping stope face length, m, is determined by firedamp taking-out discharging drilling length;
H y-topping stope rock stratum height, m, is determined by floor crack Growth Depth;
η-rock density, t/m 3.
Described combine adopt-attal that filling mixed mining work plane filling section is filled with obtains by following formula:
M 1=v 1L 1ctH 1ctη c(2)
In formula:
M 1-combine adopt-filling mixed mining work plane consumes cash amount, t/ day every day;
V 1-combine and adopt-filling mixed mining work plane advance rate every day, m/ day, determined by annual production;
L 1ct-combine and adopt-filling mixed mining work plane filling segment length, m, determined by product cash amount and scraper plate conveying capacity;
H 1ct-can packed height, m, shifts to an earlier date deflection by conveyer suspension height and top board and determines;
η c-loose spoil apparent density, t/m 3.
Described preliminary design combine adopt-filling mixed mining work plane filling segment length scope is according to M 1>=M 2, simultaneous formula formula (1) and (2), draw to combine and adopt-filling mixed mining work plane filling segment length L 1ctscope is:
L 1 c t ≥ μv 2 L 2 H y η v 1 H 1 c t η c - - - ( 3 ) .
Described filling section face length has moving characteristic to determine according to site work face overlying strata cranny development and rock stratum.
Beneficial effect: the present invention combines and adopts-filling mixed mining working face mining filling segment length, be analysis and design combine adopt-filling mixed mining technology in an one of important parameter.-filling mixed mining work plane total length is adopted by determining to combine; produce cash amount according to rock protective coat extracted spoil every day again and adopt-principle that the attal quality that is filled with of filling mixed mining work plane filling section is equal with comprehensive; tentatively determine filling section face length scope; combine according to scene again and adopt-filling mixed mining work plane overlying strata cranny development and strata movement feature requirement, finally determine filling section face length.Its method simple practical, can be combine adopt-applying of filling mixed mining technology provide engineering to instruct, further promotion gangue in coal mine not gug, washing gangue refill goaf, " selecting and purchasing is filled and adopted " integrated lasting exploit circulation mode of efficient filling coal mining, expands the extent of spreading amd application of filling coal mining.Adopt-filling mixed mining work plane filling segment length owing to can design rationally, exactly to combine, thus can adopt for combining under conditions of similarity-filling mixed mining work plane filling segment length provides Theoretical Determination.The method is simple, and test effect is good, has extremely strong engineering practicability and use value.
Accompanying drawing explanation
Fig. 1 adopts-filling mixed mining work plane filling segment length method design flow chart for combining.
Fig. 2 adopts-filling mixed mining work plane layout plan for combining.
Fig. 3 is that topping work plane adopts-filling mixed mining work plane coal mining schematic diagram with comprehensive.
In figure: 1-self-moving reversed loader, 2-filling ribbon conveyer, 3-drag conveyor, 4-bottom-dump conveyer, 5-dumping pit, 6-filling hydraulic support, 7-coal-winning machine, 8-Yun Gan lane, 9-transports coal road, L 1-filling section face length, L 2-the section of being caving face length, L-combines and adopts-filling hybrid working face total length, 10-rock topping work plane, and 11-combines and adopts-filling mixed mining work plane.
Detailed description of the invention
Below in conjunction with the embodiment in accompanying drawing, the invention will be further described:
As shown in figures 1 and 3, of the present invention combining adopts-filling mixed mining work plane 11 filling segment length L 1defining method; first according to mining geological conditions determination mine coal-cutting parameter; again according to mine capacity; design is combined and is adopted-filling mixed mining work plane 11 total length L; then; produce cash amount with combining according to rock topping work plane 10 spoil every day and adopt-filling mixed mining work plane 11 filling section spoil every day consumption, adopt-principle that filling mixed mining work plane attal quality is equal according to topping work plane with combining, tentatively determine comprehensively to adopt-filling mixed mining work plane 11 filling segment length L 1scope, finally, combines according to scene and adopts-filling mixed mining work plane 11 overlying strata cranny development height and gas drainage under suction effect, determines to combine to adopt-filling segment length the L of filling mixed mining work plane 11 1; Concrete steps are as follows:
1. combine according to mine capacity Demand Design and adopt-the total length L of filling mixed mining work plane 11;
2. calculate rock topping work plane 10 spoil every day by following formula and go out cash amount:
M 2=μv 2L 2H yη(1)
In formula:
M 2-rock topping produces cash amount every day, t/ day;
μ-washing rate under waste shaft, %;
V 2-topping work plane advance rate every day, m/ day, is determined by coal winning machine cutting bit and coal cutting number of times;
L 2-topping stope face length, m, is determined by firedamp taking-out discharging drilling length;
H y-topping stope rock stratum height, m, is determined by floor crack Growth Depth;
η-rock density, t/m 3.
3. calculated to combine by following formula and adopt-filling segment length the L of filling mixed mining work plane 11 1the charges doses be filled with:
M 1=v 1L 1ctH 1ctη c(2)
In formula:
M 1-combine adopt-filling mixed mining work plane consumes cash amount, t/ day every day;
V 1-combine and adopt-filling mixed mining work plane advance rate every day, m/ day, determined by annual production;
L 1ct-combine and adopt-filling mixed mining work plane filling segment length, m, determined by product cash amount and scraper plate conveying capacity;
H 1ct-can packed height, m, shifts to an earlier date deflection by conveyer suspension height and top board and determines;
η c-loose spoil apparent density, t/m 3.
4. according to the principle of mass conservation, combine adopt-filling mixed mining work plane 11 charging quantity and rock topping work plane 10 produce cash amount M 1>=M 2relation, calculates to combine and adopts-filling mixed mining work plane 11 length, convolution formula (1) and (2), draws to combine and adopts-filling mixed mining work plane 11 filling segment length L 1scope is:
L 1 ≥ μv 2 L 2 H y η v 1 H 1 η c - - - ( 3 ) ;
5. combine according to scene and adopt-filling mixed mining work plane 11 overlying strata cranny development and gas pumping effect demand, determine the filling section face length L be applicable to 1.
Embodiment 1: certain ore deposit is own 15coal seam is hypotonic gas permeability high gas layer, and coal seam thickness is 3.2m, and upper protection coal seam is own 14coal seam average thickness 0.5m, distance is own 15coal seam 13.5m, this mine design topping face length 150m, mining height is 1.9m, adopts 1.4m lithosphere, takes out protected seam coal-bed gas in advance, gangue refill protected seam filling section goaf.Protected seam face length 218m, adopts to combine and adopts-filling hybrid working face exploitation.Wherein combine adopt-filling hybrid working face exploitation filling segment length design procedure is as follows:
1, own 14-31050 work planes go out the calculating formula of cash amount every day:
M 2=μv 2L 2H yη(1)
In formula:
M 2-oneself 14-31010 every days produce cash amount, t/ day;
μ-washing rate under waste shaft, 65% ~ 100%;
V 2-every day advance rate, 2.4m/ day;
L 2-work plane face length, 150m;
H y-rock stratum height, 1.4m;
η-rock density, 2.4t/m 3.
2, own 15-31010 work planes need consumes least spoil gauge formula:
M 1=v 1L 1H 1η c(2)
In formula:
M 1-oneself 15-31010 work planes consume cash amount, t/ day every day;
V 1-oneself 15-31010 work plane advance rates every day, 2.4m/ day;
L 1-work plane filling segment length, m;
H 1-can packed height, 2.3m;
η c-loose spoil apparent density, 1.85t/m 3
According to designing requirement, oneself 15-31010 work planes need consume and be greater than oneself 14-31010 work planes go out cash amount, that is: M every day 1>=M 2;
Simultaneous formula formula (1) ~ (2), then own 15-31010 work plane filling segment length H 1expression formula:
L 1 = μv 2 L 2 H y η v 1 H 1 η c - - - ( 3 )
Spoil washing rate calculates by 90%, brings above calculating into, draws to combine to adopt-filling mixed mining work plane filling segment length L 1ctminimum is 106m, in conjunction with the on-the-spot applicable cases of porous bottom-dump conveyer, and on-the-spot overlying strata cranny development height and gas drainage under suction effect, after filling segment length is greater than 124m, overlying strata cranny development degree is unfavorable for gas pumping, finally determines filling section face length L 1for 120m, it is 98m that tradition combines the section of adopting face length, combines and adopts-filling mixed mining work plane total length 218m.

Claims (5)

1. one kind combine adopt-filling mixed mining work plane filling segment length defining method, it is characterized in that: first, combine according to mine capacity Demand Design and adopt-filling hybrid working face total length, then, produce cash amount according to rock topping work plane spoil every day and adopt-principle that the attal quality that is filled with of filling mixed mining work plane filling section goaf is equal with comprehensive, preliminary design is combined and is adopted-filling mixed mining work plane filling segment length scope, finally, combine according to scene and adopt-filling mixed mining work plane overlying strata cranny development and strata movement feature requirement, determine filling section face length.
2. according to claim 1 combining adopts-filling mixed mining work plane filling segment length defining method, it is characterized in that: described rock protective coat extracted spoil every day goes out cash amount and drawn by following formula:
M 2=μv 2L 2H yη(1)
In formula:
M 2-rock topping produces cash amount every day, t/ day;
μ-washing rate under waste shaft, %;
V 2-topping work plane advance rate every day, m/ day, is determined by coal winning machine cutting bit and coal cutting number of times;
L 2-topping stope face length, m, is determined by firedamp taking-out discharging drilling length;
H y-topping stope rock stratum height, m, is determined by floor crack Growth Depth;
η-rock density, t/m 3.
3. according to claim 1 combining adopts-filling mixed mining work plane filling segment length defining method, it is characterized in that: described combine adopt-attal that filling hybrid working face filling section is filled with obtains by following formula:
M 1=v 1L 1ctH 1ctη c(2)
In formula:
M 1-combine adopt-filling mixed mining work plane consumes cash amount, t/ day every day;
V 1-combine and adopt-filling mixed mining work plane advance rate every day, m/ day, determined by annual production;
L 1ct-combine and adopt-filling mixed mining work plane filling segment length, m, determined by product cash amount and scraper plate conveying capacity;
H 1ct-can packed height, m, shifts to an earlier date deflection by conveyer suspension height and top board and determines;
η c-loose spoil apparent density, t/m 3.
4. according to claim 1 combining adopts-filling mixed mining work plane filling segment length defining method, it is characterized in that: described preliminary design combine adopt-filling mixed mining work plane filling segment length scope is according to M 1>=M 2, simultaneous formula formula (1) and (2), draw to combine and adopt-filling mixed mining work plane filling segment length L 1ctscope is:
L 1 c t ≥ μv 2 L 2 H y η v 1 H 1 c t η c - - - ( 3 ) .
5. according to claim 1 combining is adopted-filling mixed mining work plane overlying strata cranny development and strata movement feature requirement, it is characterized in that: described filling section face length has moving characteristic to determine according to site work face overlying strata cranny development and rock stratum.
CN201510925707.8A 2015-12-14 2015-12-14 Fully mechanized mining filling mixed mining working face filling segment length determines method Active CN105464700B (en)

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CN201510925707.8A CN105464700B (en) 2015-12-14 2015-12-14 Fully mechanized mining filling mixed mining working face filling segment length determines method
AU2016370451A AU2016370451A1 (en) 2015-12-14 2016-11-18 Method for determining length of filling section of fully mechanized coal mining-filling mixed mining working face
PCT/CN2016/106335 WO2017101634A1 (en) 2015-12-14 2016-11-18 Fully mechanized mining-filling mixed mining working face filling section length determination method
CA2986062A CA2986062A1 (en) 2015-12-14 2016-11-18 Method for determining length of filling section of fully mechanized coal mining-filllingmixed miningworking face
RU2017146578A RU2676770C1 (en) 2015-12-14 2016-11-18 Method for determining length of a filled section of fully mechanized coal-mining filling mixing combine harvester
ZA2018/00778A ZA201800778B (en) 2015-12-14 2018-02-06 Fully mechanized mining-filling mixed mining working face filling section length determination method

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CN109488301A (en) * 2018-09-30 2019-03-19 中国矿业大学 A kind of mine, which picks up, fills place's recovery method
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CN109488301A (en) * 2018-09-30 2019-03-19 中国矿业大学 A kind of mine, which picks up, fills place's recovery method
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CN110924944A (en) * 2019-11-29 2020-03-27 北京科技大学 Coal mine main roadway down-pressing coal segmented circulating filling mining method

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ZA201800778B (en) 2018-12-19
RU2676770C1 (en) 2019-01-11
CA2986062A1 (en) 2017-06-22
WO2017101634A1 (en) 2017-06-22
AU2016370451A1 (en) 2017-10-26

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