保德煤矿综放工作面旋转开采关键技术研究
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摘要
针对边界三角煤及不规则块段造成三角煤丢失、资源浪费的难题,以保德煤矿81308综放工作面为工程背景,基于三角煤实心旋转开采技术理论,结合地质条件及工作面现状,研究了三角煤开采回风巷布置、端头设备搭接、回采工艺及顶板控制关键技术。研究结果表明:①采用分段折线式方法设计回风平巷旋转段,减少了工作面长度的变化;②前部刮板输送机提前加装输送机槽并将端头支架与装载机向副帮偏移5°,解决了前、后部刮板输送机与转载机搭接的难题;③采取机尾割三角煤斜切进刀的单向割煤工艺,实现了工作面连续推进;④采取机头支架不放煤工艺和配备单体支柱,保证了旋转中心附近的顶板稳定性。通过综放工作面旋转开采关键技术的应用,成功回采了边界三角煤。
Aiming at the problem of triangular coal loss and resource waste caused by boundary triangle coal and irregular block segments,taking the No.81308 fully-mechanized top coal caving mining face of Baode Coal Mine as the engineering background,and based on the theory of boundary triangular coal rotary mining technology,and combined with geological conditions and current status of working face,the key technology of tail entry layout,equipment lap joint,mining technology and roof control in triangular coal mining was studied. The research results show that: ①The segmented folding line method is used to design the rotating section of the tail entry,which reduces the change of the working face length.②The front scraper conveyor is equipped with a conveyor slot in advance and the end bracket and the loader are offset by 5° to the auxiliary,which solves the problem of overlapping the front and rear scraper conveyors with the transfer machine.③Adopting the one-way coal cutting process of cutting the triangle coal chamfering in the tail,achieving continuous advancement of the working face.④Adopting the head support without coal top coal caving mining process and equipped with single props to ensure the stability of the roof near the rotating center.Through the application of key technologies for rotary mining in fully mechanized top coal caving mining face,the boundary triangle coal was successfully recovered.
Aiming at the problem of triangular coal loss and resource waste caused by boundary triangle coal and irregular block segments,taking the No.81308 fully-mechanized top coal caving mining face of Baode Coal Mine as the engineering background,and based on the theory of boundary triangular coal rotary mining technology,and combined with geological conditions and current status of working face,the key technology of tail entry layout,equipment lap joint,mining technology and roof control in triangular coal mining was studied. The research results show that: ①The segmented folding line method is used to design the rotating section of the tail entry,which reduces the change of the working face length.②The front scraper conveyor is equipped with a conveyor slot in advance and the end bracket and the loader are offset by 5° to the auxiliary,which solves the problem of overlapping the front and rear scraper conveyors with the transfer machine.③Adopting the one-way coal cutting process of cutting the triangle coal chamfering in the tail,achieving continuous advancement of the working face.④Adopting the head support without coal top coal caving mining process and equipped with single props to ensure the stability of the roof near the rotating center.Through the application of key technologies for rotary mining in fully mechanized top coal caving mining face,the boundary triangle coal was successfully recovered.
引文
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[7]杨继和,王延润,刘明明,等.长初次来压步距下三角式扇形卸压初采技术研究[J].煤炭科学技术,2017,45(8):142-146.YANG Jihe,WANG Yanrun,LIU Mingming,et al.Study on triangle fan shaped pressure released initial mining technology with long first weighting interval[J]. Coal Science and Technology,2017,45(8):142-146.
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[9]朱帝杰,陈忠辉,常远,等.基于随机介质理论的综放开采顶煤放出规律研究[J].煤炭科学技术,2018,46(1):167-174.ZHU Dijie,CHEN Zhonghui,CHANG Yuan,et al. Study on top coal caving law of fully-mechanized top coalcaving mining based on random medium theory[J].Coal Science and Technology,2018,46(1):167-174.
[10]张科学,李首滨,何满潮,等.智能化无人开采系列关键技术之一:综采智能化工作面调斜控制技术研究[J].煤炭科学技术,2018,46(1):139-149.ZHANG Kexue,LI Shoubin,HE Manchao,et al. Study on key technologies of intelligent unmanned coalmining seriesⅠ:study on diagonal adjustment control technology ofintelligent fullymechanized coal mining face[J]. Coal Science and Technology,2018,46(1):139-149.
[11]孙德强.综采面调向旋转开采技术及应用[J].矿业工程,2001,9(1):17-18.SUN Deqiang. Application of mining face direction-change and rotary mining technology[J]. Mining Engineering,2001,9(1):17-18.
[12]杨胜利,张康宁,李良晖.薄煤层M形工作面连续旋转开采技术[J].煤炭科学技术,2018,46(1):105-111.YANG Shengli,ZHANG Kangning,LI Lianghui. Technology of continuous rotation mining in M-shape working face of thin coal seam[J].Coal Science and Technology,2018,46(1):105-111.
[13]樊明,丁言露,刘飞.采区边角煤开采方案研究[J].煤炭技术,2011,30(8):85-87.FAN Ming,DING Yanlu,LIU Fei. Research on mining method of boundary coal-pillar[J].Coal Technology,2011,30(8):85-87.
[14]雷煌.无轨胶轮辅助运输在井下综采工作面搬家作业中的应用[J].煤矿机械,2008,29(1):139-141.LEI Huang.Application of trackless rubber-tyred subsidiary haulage for conveyance job of comprehensive mechanized coal mining face in underground[J]. Coal Mine Machinery,2008,29(1):139-141.
[15]董海宁.旋转开采工作面矿压显现规律的数值模拟研究[J].煤炭技术,2015,34(9):30-33.DONG Haining.Study of numerical simulation on strata behavior sat rotary mining face[J].Coal Technology,2015,34(9):30-33.
[2]屠世浩,郝明奎,谢耀社.孤岛煤柱综采工作面旋转开采关键技术[J].中国矿业大学学报,2004,33(5):30-33.TU Shihao,HAO Minkui,XIE Yaoshe.Key technique on revolving mining in gob-surrounded pillar with fully mechanized mining[J].Journal of China University of Mining and Technology,2004,33(5):30-33.
[3]曾得国,王惠风.综放工作面边界三角煤旋转开采技术研究[J].煤炭工程,2016,48(3):8-11.ZENG Deguo,WANG Huifeng. Research on rotation mining of triangle coal in the boundary of fully-mechanized top coal caving face[J].Coal Engineering,2016,48(3):8-11.
[4]陈刚,曹云龙,刘奉明.综采工作面旋转开采技术研究[J].煤炭技术,2011,30(1):77-79.CHEN Gang,CAO Yunlong,LIU Fengming. Research on revolving mining technology at fully mechanized coal face[J].Coal Technology,2011,30(1):77-79.
[5]卓庆奉,杨波,赵力.不规则边角煤连续开采设计及回采实践[J].中国矿业,2017,26(2):117-121.ZHUO Qingfeng,YANG Bo,ZHAO Li. Continuous mining design and actual mining practice for irregular boundary coal[J]. China Mining Magazine,2017,26(2):117-121.
[6]盛国军,孙启生,宋华岭.薄煤层综采的综合创新技术[J].煤炭学报,2007,32(3):230-234.SHENG Guojun,SUN Qisheng,SONG Hualing. The innovational mining technology of fully mechanized mining on thin coal seam[J].Journal of China Coal Society,2007,32(3):230-234.
[7]杨继和,王延润,刘明明,等.长初次来压步距下三角式扇形卸压初采技术研究[J].煤炭科学技术,2017,45(8):142-146.YANG Jihe,WANG Yanrun,LIU Mingming,et al.Study on triangle fan shaped pressure released initial mining technology with long first weighting interval[J]. Coal Science and Technology,2017,45(8):142-146.
[8]徐涛,王峰,刘祖飞.“三软”煤层旋转开采矿压显现规律[J].煤炭技术,2011,30(2):65-67.XU Tao,WANG Feng,LIU Zufei. Strata behavior of revolving mining in“three soft”coal seam[J]. Coal Technology,2011,30(2):65-67.
[9]朱帝杰,陈忠辉,常远,等.基于随机介质理论的综放开采顶煤放出规律研究[J].煤炭科学技术,2018,46(1):167-174.ZHU Dijie,CHEN Zhonghui,CHANG Yuan,et al. Study on top coal caving law of fully-mechanized top coalcaving mining based on random medium theory[J].Coal Science and Technology,2018,46(1):167-174.
[10]张科学,李首滨,何满潮,等.智能化无人开采系列关键技术之一:综采智能化工作面调斜控制技术研究[J].煤炭科学技术,2018,46(1):139-149.ZHANG Kexue,LI Shoubin,HE Manchao,et al. Study on key technologies of intelligent unmanned coalmining seriesⅠ:study on diagonal adjustment control technology ofintelligent fullymechanized coal mining face[J]. Coal Science and Technology,2018,46(1):139-149.
[11]孙德强.综采面调向旋转开采技术及应用[J].矿业工程,2001,9(1):17-18.SUN Deqiang. Application of mining face direction-change and rotary mining technology[J]. Mining Engineering,2001,9(1):17-18.
[12]杨胜利,张康宁,李良晖.薄煤层M形工作面连续旋转开采技术[J].煤炭科学技术,2018,46(1):105-111.YANG Shengli,ZHANG Kangning,LI Lianghui. Technology of continuous rotation mining in M-shape working face of thin coal seam[J].Coal Science and Technology,2018,46(1):105-111.
[13]樊明,丁言露,刘飞.采区边角煤开采方案研究[J].煤炭技术,2011,30(8):85-87.FAN Ming,DING Yanlu,LIU Fei. Research on mining method of boundary coal-pillar[J].Coal Technology,2011,30(8):85-87.
[14]雷煌.无轨胶轮辅助运输在井下综采工作面搬家作业中的应用[J].煤矿机械,2008,29(1):139-141.LEI Huang.Application of trackless rubber-tyred subsidiary haulage for conveyance job of comprehensive mechanized coal mining face in underground[J]. Coal Mine Machinery,2008,29(1):139-141.
[15]董海宁.旋转开采工作面矿压显现规律的数值模拟研究[J].煤炭技术,2015,34(9):30-33.DONG Haining.Study of numerical simulation on strata behavior sat rotary mining face[J].Coal Technology,2015,34(9):30-33.