复合支护体系在综采工作面端头支护中的应用
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摘要
为保证工作面端头支护强度,对采煤工作面回采期间端头应力分布进行分析,得出:端头受到煤墙壁两侧的水平方向应力作用,以及顶底板来压时的垂直方向应力作用,结合空间范围的综合分析,提出利用打设锚杆、锚网索的方式进行主动支护,以期平衡垂直应力影响;利用掘进期间架设工字钢棚,在回采前打设边路抬棚和中路抬棚,并在回采时加强对中路抬棚交替迈步的管理方式实现掩护式回采,同时抵消掉侧翼水平应力的影响,通过复合式支护方式,提高了端头支护的强度。
In order to ensure the working face end support strength,to end the stress distribution during the coal mining face is analyzed,it is concluded that: end by coal wall on both sides of the horizontal stress,as well as the roof and floor to pressure when the vertical stress,combined with the comprehensive analysis of the space,put forward using the driven in the form of anchor and anchor wire rope active support,in order to balance the vertical stress influence; with the use of the construction steel shed during tunneling,the side and middle road roofing are set up before stoping,and the covered stoping is realized by strengthening the management method of alternating steps to the middle road roofing while stoping,and the influence of lateral horizontal stress is offset.
In order to ensure the working face end support strength,to end the stress distribution during the coal mining face is analyzed,it is concluded that: end by coal wall on both sides of the horizontal stress,as well as the roof and floor to pressure when the vertical stress,combined with the comprehensive analysis of the space,put forward using the driven in the form of anchor and anchor wire rope active support,in order to balance the vertical stress influence; with the use of the construction steel shed during tunneling,the side and middle road roofing are set up before stoping,and the covered stoping is realized by strengthening the management method of alternating steps to the middle road roofing while stoping,and the influence of lateral horizontal stress is offset.
引文
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[9]刘长友,黄炳香,孟祥军,等.超长孤岛综放工作面支承压力分布规律研究[J].岩石力学与工程学报,2007,26(S1):2671-2676.Liu Changyou,Huang Bingxiang,Meng Xiangjun,et al. Researchon abutment pressure distribution law of over length isolated fully-mechanized top coal caving face[J]. Chinese Journal of Rock Me-chanics and Engineering,2007,26(S1):2671-2676.
[10]谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究[J].岩石力学与工程学报,2006,25(3):545-549.Xie Guangxiang,Yang Ke,Liu Quanming. Study on distributionlaws of stress in inclined coal pillar for fully-mechanized top-coalcaving face[J]. Chinese Journal of Rock Mechanics and Engineer-ing,2006,25(3):545-549.
[11]康红普,林健,张晓,等.潞安矿区井下地应力测量及分布规律研究[J].岩土力学,2010,31(3):827-831.Kang Hongpu,Lin Jian,Zhang Xiao,et al. Stress measurementsand distribution laws in Lu'an underground coal mines[J]. Rockand Soil Mechanics,2010,31(3):827-831.
[12]欧阳振华,齐庆新,张寅,等.水压致裂预防冲击地压的机理与试验[J].煤炭学报,2011,36(S2):321-325.Ouyang Zhenghua,Qi Qingxin,Zhang Yin,et al. Mechanism andexperiment of hydraulic fracturing in rock burst prevention[J].Journal of China Coal Society,2011,36(S2):321-325.
[13]闫少宏,宁宇,康立军,等.用水力压裂处理坚硬顶板的机理及实验研究[J].煤炭学报,2000,25(1):32-35.Yan Shaohong,Ning Yu,Kang Lijun,et al. The mechanism ofhydro-breakage to control hard roof and its test study[J]. Journalof China Coal Society,2000,25(1):32-35.
[14] Huang Bingxiang,Yu Bin,Feng Feng,et al. Field investigation intodirectional hydraulic fracturing for hard roof in Tashan Coal Mine[J]. Journal of Coal Science&Engineering,2013,19(2):153-159.
[15]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.
[2]李学华,黄志增,杨宏敏,等.高应力硐室底鼓控制的应力转移技术[J].中国矿业大学学报,2006,35(3):296-300.Li Xuehua,Huang Zhizeng,Yang Hongmin,et al. Stress transfertechnique of controlling chamber's floor heave under high miningstress[J]. Journal of China University of Mining&Technology,2006,35(3):296-300.
[3]田建胜,靖洪文.软岩巷道爆破卸压机理分析[J].中国矿业大学学报,2010,39(1):50-54.Tian Jiansheng,Jing Hongwen. Blasting to relieve pressure aroundsoft rock roadway[J]. Journal of China University of Mining&Technology,2010,39(1):50-54.
[4]王襄禹,柏建彪,李伟.高应力软岩巷道全断面松动卸压技术研究[J].采矿与安全工程学报,2008,25(1):37-45.Wang Xiangyu,Bai Jianbiao,Li Wei. Stress-relief technique of fullface gangue dropping in soft rock roadway under high stress[J].Journal of Mining&Safety Engineering,2008,25(1):37-45.
[5]康红普.临近井巷卸压法维护软岩大断面硐室的研究实践[J].岩石力学与工程学报,1993,12(2):20-27.Kang Hongpu. Practice on stress relieving in maintenance big sec-tion chamber[J]. Chinese Journal of Rock Mechanics and Engi-neering,1993,12(2):20-27.
[6]柏建彪,侯朝炯.深部巷道围岩控制原理与应用研究[J].中国矿业大学学报,2006,35(2):145-148.Bai Jianbiao,Hou Chaojiong. Control principle of surrounding rocksin deep roadway and its application[J]. Journal of China Universi-ty of Mining&Technology,2006,35(2):145-148.
[7]何富连,陈建余,邹喜正.综放沿空巷道围岩卸压控制研究[J].煤炭学报,2000,25(6):589-592.He Fulian,Chen Jianyu,Zou Xizheng. Study on depressurizing con-trol of the surrounding rock of a roadway along gob area in sub-lev-el caving mining[J]. Journal of China Coal Society,2000,25(6):589-592.
[8]安伟光,蔡荫林,陈卫东.随机结构系统可靠性分析与优化[M].哈尔滨:哈尔滨工程大学出版社,2007.
[9]刘长友,黄炳香,孟祥军,等.超长孤岛综放工作面支承压力分布规律研究[J].岩石力学与工程学报,2007,26(S1):2671-2676.Liu Changyou,Huang Bingxiang,Meng Xiangjun,et al. Researchon abutment pressure distribution law of over length isolated fully-mechanized top coal caving face[J]. Chinese Journal of Rock Me-chanics and Engineering,2007,26(S1):2671-2676.
[10]谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究[J].岩石力学与工程学报,2006,25(3):545-549.Xie Guangxiang,Yang Ke,Liu Quanming. Study on distributionlaws of stress in inclined coal pillar for fully-mechanized top-coalcaving face[J]. Chinese Journal of Rock Mechanics and Engineer-ing,2006,25(3):545-549.
[11]康红普,林健,张晓,等.潞安矿区井下地应力测量及分布规律研究[J].岩土力学,2010,31(3):827-831.Kang Hongpu,Lin Jian,Zhang Xiao,et al. Stress measurementsand distribution laws in Lu'an underground coal mines[J]. Rockand Soil Mechanics,2010,31(3):827-831.
[12]欧阳振华,齐庆新,张寅,等.水压致裂预防冲击地压的机理与试验[J].煤炭学报,2011,36(S2):321-325.Ouyang Zhenghua,Qi Qingxin,Zhang Yin,et al. Mechanism andexperiment of hydraulic fracturing in rock burst prevention[J].Journal of China Coal Society,2011,36(S2):321-325.
[13]闫少宏,宁宇,康立军,等.用水力压裂处理坚硬顶板的机理及实验研究[J].煤炭学报,2000,25(1):32-35.Yan Shaohong,Ning Yu,Kang Lijun,et al. The mechanism ofhydro-breakage to control hard roof and its test study[J]. Journalof China Coal Society,2000,25(1):32-35.
[14] Huang Bingxiang,Yu Bin,Feng Feng,et al. Field investigation intodirectional hydraulic fracturing for hard roof in Tashan Coal Mine[J]. Journal of Coal Science&Engineering,2013,19(2):153-159.
[15]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010.