CN102094646A - Process process for comprehensively mining extra-hard inter-band coal seams with complex texture - Google Patents
Process process for comprehensively mining extra-hard inter-band coal seams with complex texture Download PDFInfo
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- CN102094646A CN102094646A CN2010105670849A CN201010567084A CN102094646A CN 102094646 A CN102094646 A CN 102094646A CN 2010105670849 A CN2010105670849 A CN 2010105670849A CN 201010567084 A CN201010567084 A CN 201010567084A CN 102094646 A CN102094646 A CN 102094646A
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Abstract
The invention discloses a process for comprehensively mining extra-hard inter-band coal seams with a complex texture, which is characterized in that extra-hard inter-band coal seams with a complex texture are mined by using a comprehensively mechanized coal mining process; according to the inter-band situation and the coal seam distribution situation of a coal face, a coal mining machine is provided with two cylindrical powerful rotary-cut rollers of which one is used for breaking rock, and the other one is used for cutting coal; and in the process of coal cutting, two coal faces are operated alternately or a coal face is operated independently. By using the process disclosed by the invention, the comprehensively mechanized coal mining of extra-hard inter-band coal seams with a complex texture is realized, therefore, the economic and social benefits of the process are remarkable, and the popularization and application values thereof are high.
Description
Technical field
The present invention relates to coal-mining method, the coal-mining method in especially extremely hard dirt band labyrinth coal seam.
Background technology
Along with the continuous progress of coal winning technology, fully mechanized coal winning technology (abbreviation fully mechanized mining) is widelyd popularize.The comprehensive mechanical coal mining degree of especially big moulded coal can reach 100%.But fully mechanized coal winning technology has the shortcoming of himself, and is promptly poor to the adaptive capacity of environment; Complicated and contain under the situation of one or more layers dirt band in coal seam conditions, coal-winning machine is cut directly more, and high-grade blasting process is also all adopted in most of collieries.Adopted following deficiency but high-grade big gun is general:
1, safety factor is little
Work plane adopt blasting process, explosive, detonator deposit and use amount big, difficult management, decide bursting work complex procedures such as big gun, explosion, inspection, depositing dust, latent defect hidden danger is many, and demolition accident takes place easily, personnel advance that the operation of machine road is frequent, the time is long, are easy to generate top board and shipping accident.The outstanding top of work plane is big, and top board and demolition accident easily take place difficult management such as face timbering, pressure caving.
2, per unit area yield is low
1) work plane perforating, to decide big gun, blasting time long, many organism of production of operation difficulty, and efficiency is low.
2) high-grade blast mining face need manually be hoveled coal from one place to another.In case end eye demolition effect is poor, move the slide difficulty, need manually planted agent, greatly reduce face propulsion speed.
3) it is slow to move slide speed.Though work plane uses pier stud to move slide, indivedual local superelevation locations or tomography section, the pier stud holding state is poor, greatly reduces real support power, and it is slow to cause moving slide speed.
4) the pillar deflection is big.Because work plane dirt band hardness is big, the blast charging amount is big, and pillar or the pillar distortion of collapsing easily after the explosion is serious, has increased the rectifying and improving amount.
5) work plane prop drawing workload is big.Because the work plane mining height is little, causes the trestle difficulty, for improving prop drawing speed, need the bull prop drawing, it is many to take personnel.Output about 10,000 tons, can't effectively improve all the time.
3, retaining coal weak effect
Work plane does not have special-purpose retaining cash device, need manually arrange the macromolecule baffle plate during explosion, because mining height is little, it is slow that retaining is established speed, and baffle plate is fixed problems such as not firm, has a strong impact on working surface production, and to the equipment protection weak effect.
4, labour intensity is big, to take personnel many
The work plane perforating, keep off coal, hovel coal from one place to another, labour intensity such as Zhi Huizhu is big, need apply the strategy of throwing waves of people into action, efficiency can't improve.
5, operating environment is poor
Work plane explosion blasting fume, explosion dust, hovel from one place to another after coal dust and the explosion because retaining cash weak effect, cause the float coal sidewalk in, floating cash many, had a strong impact on the work plane working environment, be unfavorable for keeping the safety in production.
6, goaf difficult treatment
Because the working panel plate is the charcoal rock, the outstanding top area of work plane is big, forces directly inbreak of caving, needs every circulation all must carry out the explosion caving, and by the time periodic weighting or mining pressure superpose can inbreak, had a strong impact on the work plane ordinary production.
Summary of the invention
For overcoming the deficiency of existing high-grade big gun mining method, the exploitation that a kind of mechanized coal mining method is used for extremely hard dirt band complicated seam is proposed.
Technical scheme of the present invention is:
It adopts fully mechanized coal winning technology exploitation utmost point hard formation dirt band complicated seam, and is specific as follows:
1, according to work plane dirt band and distributed coal beds situation, coal-winning machine adopts the powerful cylinder of two column rotary-cuts, a cylinder is broken rock cylinder, intended diameter is 0.8m, be mainly used in brokenly rock, design principle is by reducing diameter of cylinder, reach to reduce the cylinder moment of torsion, reduce cutting resistance, increase rock breaking capacity; Another cylinder is the coal cutting cylinder, diameter is 1.0m, be mainly used in auxiliary rock and coal cutting, two cylinders are according to coal seam, dirt band hardness and drum rotation speed, tooth pitch is reduced to 250mm by original 350mm, pick quantity is increased to 63 by original 32, and adopts the high-strength pick of cladding wearing layer.
2, cylinder is avoided hard dirt band during coal cutting, cut the following coal of dirt band earlier, make dirt band unsettled, broken naturally by dirt band deadweight and upper pressure, high two cylinders recur this moment, wherein broken rock cylinder cutting dirt band, the above coal seam of coal cutting cylinder cutting dirt band is turned over cutter then dirt band and the coal that drops is cleaned to transporter.
Also can adopt two work plane alternately operatings during above-mentioned coal cutting.Promptly earlier cut coal seam below the dirt band at a work plane with unidirectional coal cutting mode, the unsettled band pressure of dirt band temporarily stops coal cutting in the middle of allowing; And then change another work plane over to and cut coal seam below the dirt band with unidirectional coal cutting mode, the unsettled band of dirt band is pressed in the middle of allowing; This moment, a last work plane was subjected to the leading pressure influence of mining influence and machine road, and dirt band has been subjected to corollary failure, and intensity reduces, and changed a work plane again over to and broke cash and the coal seam of cutting above the dirt band, hocketed by above-mentioned steps, until having adopted.
The present invention has realized the fully-mechanized mining in extremely hard dirt band labyrinth coal seam, and economical, societal benefits are remarkable, the application value height.
The specific embodiment
Those skilled in the art can implement according to the described technical scheme of summary of the invention, are not described in detail at this.
Claims (2)
1. an extremely hard dirt band labyrinth coal seam fully mechanized mining is characterized in that, it adopts fully mechanized coal winning technology exploitation utmost point hard formation dirt band complicated seam, and is specific as follows:
According to work plane dirt band and distributed coal beds situation, coal-winning machine adopts the powerful cylinder of two column rotary-cuts, and a cylinder is broken rock cylinder, intended diameter is 0.8m, is mainly used in brokenly rock, and design principle is by reducing diameter of cylinder, reach and reduce the cylinder moment of torsion, reduce cutting resistance, increase rock breaking capacity; Another cylinder is the coal cutting cylinder, diameter is 1.0m, be mainly used in auxiliary rock and coal cutting, two cylinders are according to coal seam, dirt band hardness and drum rotation speed, tooth pitch is reduced to 250mm by original 350mm, pick quantity is increased to 63 by original 32, and adopts the high-strength pick of cladding wearing layer;
During coal cutting, cylinder is avoided hard dirt band, cut the following coal of dirt band earlier, make dirt band unsettled, broken naturally by dirt band deadweight and upper pressure, high two cylinders that recur this moment, wherein broken rock cylinder cutting dirt band, the above coal seam of coal cutting cylinder cutting dirt band is turned over cutter then dirt band and the coal that drops is cleaned to transporter.
2. an extremely hard dirt band labyrinth coal seam fully mechanized mining is characterized in that, it adopts fully mechanized coal winning technology exploitation utmost point hard formation dirt band complicated seam, and is specific as follows:
According to work plane dirt band and distributed coal beds situation, coal-winning machine adopts the powerful cylinder of two column rotary-cuts, and a cylinder is broken rock cylinder, intended diameter is 0.8m, is mainly used in brokenly rock, and design principle is by reducing diameter of cylinder, reach and reduce the cylinder moment of torsion, reduce cutting resistance, increase rock breaking capacity; Another cylinder is the coal cutting cylinder, diameter is 1.0m, be mainly used in auxiliary rock and coal cutting, two cylinders are according to coal seam, dirt band hardness and drum rotation speed, tooth pitch is reduced to 250mm by original 350mm, pick quantity is increased to 63 by original 32, and adopts the high-strength pick of cladding wearing layer;
During coal cutting, earlier cut coal seam below the dirt band at a work plane with unidirectional coal cutting mode, the unsettled band pressure of dirt band temporarily stops coal cutting in the middle of allowing; And then change another work plane over to and cut coal seam below the dirt band with unidirectional coal cutting mode, the unsettled band of dirt band is pressed in the middle of allowing; This moment, a last work plane was subjected to the leading pressure influence of mining influence and machine road, and dirt band has been subjected to corollary failure, and intensity reduces, and changed a work plane again over to and broke cash and the coal seam of cutting above the dirt band, hocketed by above-mentioned steps, until having adopted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105670849A CN102094646A (en) | 2010-11-18 | 2010-11-18 | Process process for comprehensively mining extra-hard inter-band coal seams with complex texture |
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| CN2010105670849A CN102094646A (en) | 2010-11-18 | 2010-11-18 | Process process for comprehensively mining extra-hard inter-band coal seams with complex texture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670415A (en) * | 2013-12-26 | 2014-03-26 | 河南工程技术学校 | Blast and conventional combined mining method under a coalmine well |
| CN105888664A (en) * | 2016-04-06 | 2016-08-24 | 中国神华能源股份有限公司 | Mining method for extremely-thick hard coal |
| CN107448208A (en) * | 2017-08-08 | 2017-12-08 | 中国神华能源股份有限公司 | For the heading driving method with hard dirt band |
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| US4062595A (en) * | 1976-10-15 | 1977-12-13 | The United States Of America As Represented By The Secretary Of The Interior | Automatic face transfer linear cutting rotary head continuous mining machine and method |
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- 2010-11-18 CN CN2010105670849A patent/CN102094646A/en active Pending
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| US4062595A (en) * | 1976-10-15 | 1977-12-13 | The United States Of America As Represented By The Secretary Of The Interior | Automatic face transfer linear cutting rotary head continuous mining machine and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670415A (en) * | 2013-12-26 | 2014-03-26 | 河南工程技术学校 | Blast and conventional combined mining method under a coalmine well |
| CN103670415B (en) * | 2013-12-26 | 2016-03-16 | 河南工业和信息化职业学院 | A kind of underground coal mine big gun is adopted and is adopted unitized production method with general |
| CN105888664A (en) * | 2016-04-06 | 2016-08-24 | 中国神华能源股份有限公司 | Mining method for extremely-thick hard coal |
| CN107448208A (en) * | 2017-08-08 | 2017-12-08 | 中国神华能源股份有限公司 | For the heading driving method with hard dirt band |
| CN107448208B (en) * | 2017-08-08 | 2019-12-31 | 中国神华能源股份有限公司 | Method for tunneling coal seam roadway with hard gangue |
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Application publication date: 20110615 |