基于“留巷+超前工作面倾向钻孔”的无煤柱煤与瓦斯共采技术研究
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摘要
为了对某煤矿无煤柱煤与瓦斯共采技术进行研究,研究了"留巷+超前工作面倾向钻孔"技术,对某煤矿工作面及试验钻孔进行了布置设计,研究了留巷围岩控制参数、钻孔结构参数及布置参数,然后对留巷围岩控制效果和钻孔稳定性进行了监测和分析。研究得出:工作支撑压力影响区分为3个区域,围岩最大变形速度达到89 mm/d,顶底板最大变形速度达到136 mm/d,基本顶垮落变形区和直接顶垮落区,顶底板最大移近速度达到40 mm/d,围岩最大变形速度为22 mm/d。通过对钻孔稳定控制技术的应用,提高了钻孔稳定性,改善了瓦斯抽采钻孔抽采效率。研究为钻孔的合理布置提供了技术支持。
To stydy a mine without coal and gas coal pillar mining technology,this paper studied the " roadway retention + inclined drilling ahead of working face" technology,working face and test drilling were designed and laid out,surrounding rock control parameters,structure parameters and drilling parameters were also studied,the control effect of retained roadway surrounding rock and borehole stability were also monitored and analyzed.The results showed that the influence of working support pressure can be divided into three areas,the maximum deformation speed of surrounding rock can reach 89 mm/d,the maximum deformation speed of roof and floor can reach 136 mm/d,the maximum displacement speed of roof and floor can reach 40 mm/d and the maximum deformation speed of surrounding rock can reach 22 mm/d.Through the use of borehole stability control technology,the drilling stability is improved and the gas extraction drilling efficiency is improved.The research provides technical support for the reasonable arrangement of borehole.
To stydy a mine without coal and gas coal pillar mining technology,this paper studied the " roadway retention + inclined drilling ahead of working face" technology,working face and test drilling were designed and laid out,surrounding rock control parameters,structure parameters and drilling parameters were also studied,the control effect of retained roadway surrounding rock and borehole stability were also monitored and analyzed.The results showed that the influence of working support pressure can be divided into three areas,the maximum deformation speed of surrounding rock can reach 89 mm/d,the maximum deformation speed of roof and floor can reach 136 mm/d,the maximum displacement speed of roof and floor can reach 40 mm/d and the maximum deformation speed of surrounding rock can reach 22 mm/d.Through the use of borehole stability control technology,the drilling stability is improved and the gas extraction drilling efficiency is improved.The research provides technical support for the reasonable arrangement of borehole.
引文
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[13]李宏艳,王维华,齐庆新,等.煤与瓦斯共采覆岩应力及渗透耦合特性实验研究[J].煤炭学报,2013,38(6):942-947.Li Hongyan,Wang Weihua,Qi Qingxin,et al.Experimental study on stress and permeability coupling characteristics of overburden rock in coal and gas co-mining[J].Journal of China Coal Society,2013,38(6):942-947.
[14]韦涌清,秦书玉,王海波,等.无煤柱工作面采空区风流运移瓦斯规律[J].矿业安全与环保,1987(6):7-10,43.Wei Yongqing,Qin Shuyu,Wang Haibo,et al.Law of gas migration in goaf area without coal pillar working face by wind[J].Mining Safety&Environmental Protection,1987(6):7-10,43.
[15]秦书玉,郭祥贵.高沼气特厚自燃煤层分层同采无煤柱开采的瓦斯治理[J].河北煤炭,1987(1):43-46.Qin Shuyu,Guo Xiangui.Stratification of high biogas extra-thick spontaneous combustion coal seam and the control of gas without coal pillar mining[J].Hebei Coal,1987(1):43-46.
[16]王增全.高瓦斯工作面立体瓦斯抽采技术[J].煤炭科学技术,2013,41(10):86-89.Wang Zengquan.Three-dimensional gas extraction technology for high gas working face[J].Coal Science and Technology,2013,41(10):86-89.
[17]张仰强,程波,季卫宾.基于地应力测量的综放沿空巷道合理护巷煤柱尺寸的设计研究[J].煤炭工程,2012(12):4-6.Zhang Yangqiang,Cheng Bo,Ji Weibin.Design and research on the reasonable size of coal pillar for protecting roadway along the roadway in the fully-mechanized roadway based on the measurement of ground stress[J].Coal Engineering,2012(12):4-6.
[18]蔡洪林,尹贤坤,汤朝均,等.切顶卸压沿空留巷无煤柱开采技术研究与应用[J].矿业安全与环保,2012,39(5):15-18.Cai Honglin,Yin Xiankun,Tang Chaojun,et al.Research and application of no-pillar mining technology in open-pit roadway with tip unloading pressure[J].Mining Safety&Environmental Protection,2012,39(5):15-18.
[19]陈建.新型超前留巷钻孔瓦斯抽采技术研究及效果分析[J].山东煤炭科技,2014(8):61-63.Chen Jian.Research and effect analysis of new drilling gas extraction technology in advanced retaining roadway[J].Shandong Coal Science and Technology,2014(8):61-63.
[20]刘清利,王萌.综放工作面沿空留巷无煤柱开采技术[J].煤炭科学技术,2016,44(5):122-127.Liu Qingli,Wang Meng.No coal pillar mining technology along empty roadway in fully-mechanized working face[J].Coal Science and Technology,2016,44(5):122-127.
[2]郑西贵,张农,袁亮,等.无煤柱分阶段沿空留巷煤与瓦斯共采方法与应用[J].中国矿业大学学报,2012,41(3):390-396.Zheng Xigui,Zhang Nong,Yuan Liang,et al.Co-mining method and application of coal and gas along the empty roadway in stages without coal pillar[J].Journal of China University of Mining&Technology,2012,41(3):390-396.
[3]陈家云,何勇,程建圣.深部薄煤层无煤柱煤与瓦斯共采技术应用实践[J].矿业安全与环保,2009,36(5):60-62.Chen Jiayun,He Yong,Chen Jiansheng.Application of coal pillar coal and gas co-production technology in deep thin coal seam[J].Mining Safety&Environmental Protection,2009,36(5):60-62.
[4]钟耀华,谢文兵,谢小平,等.薄煤层保护层无煤柱煤与瓦斯共采技术研究[J].煤炭工程,2014,46(2):9-11.Zhong Yaohua,Xie Wenbing,Xie Xiaoping,et al.Study on co-production technology of pillar coal and gas in thin coal protective layer[J].Coal Engineering,2014,46(2):9-11.
[5]袁亮.留巷钻孔法煤与瓦斯共采技术[J].煤炭学报,2008,33(8):898-902.Yuan Liang.Technology of coal and gas co-production by drilling in reserved roadway[J].Journal of China Coal Society,2008,33(8):898-902.
[6]张农,阚甲广,韩昌良,等.无煤柱沿空留巷技术[J].煤矿支护,2014(2):2-14.Zhang Nong,Kan Jiaguang,Han Changliang,et al.Technique of no-pillar roadway along empty roadway[J].Coal Mine Supporting,2014(2):2-14.
[7]袁亮,薛俊华.低透气性煤层群无煤柱煤与瓦斯共采关键技术[J].煤炭科学技术,2013,41(1):5-11.Yuan Liang,Xue Junhua.Key technology of coal pillar coal and gas co-production in low permeability coal seam group[J].Coal Science and Technology,2013,41(1):5-11.
[8]肖长春,孔翔.潘一东无煤柱沿空留巷围岩活动规律研究[J].煤炭工程,2013,45(7):54-57.Xiao Changchun,Kong Xiang.Study on the regularity of the surrounding rock movement along the empty roadway without coal pillar in east part of Panyi Mine[J].Coal Engineering,2013,45(7):54-57.
[9]康淑云.快速推广瓦斯抽采利用新技术---“低透气性煤层群无煤柱煤与瓦斯共采关键技术现场推广会”侧记[J].中国煤炭,2008,34(7):117-119.Kang Shuyun.New technology of gas extraction and utilization is rapidly popularized:"the on-site promotion meeting of key technologies of coal pillar coal and gas co-production in low-permeability coal seam group"[J].China Coal,2008,34(7):117-119.
[10]华心祝,张登龙,李迎富.深井开采沿空留巷支护技术研究[J].金属矿山,2009(S1):668-671.Hua Xinzhu,Zhang Denglong,Li Yingfu.Research on support technology of deep well mining along empty roadway[J].Metal Mine,2009(S1):668-671.
[11]袁亮.瓦斯治理理念和煤与瓦斯共采技术[J].中国煤炭,2010,36(6):5-12.Yuan Liang.Gas control concept and coal and gas co-mining technology[J].China Coal,2010,36(6):5-12.
[12]袁亮.煤与瓦斯共采领跑煤炭科学开采[J].能源与节能,2011(4):1-4.Yuan Liang.Coal and gas together lead the scientific coal mining[J].Energy and Energy Conservation,2011(4):1-4.
[13]李宏艳,王维华,齐庆新,等.煤与瓦斯共采覆岩应力及渗透耦合特性实验研究[J].煤炭学报,2013,38(6):942-947.Li Hongyan,Wang Weihua,Qi Qingxin,et al.Experimental study on stress and permeability coupling characteristics of overburden rock in coal and gas co-mining[J].Journal of China Coal Society,2013,38(6):942-947.
[14]韦涌清,秦书玉,王海波,等.无煤柱工作面采空区风流运移瓦斯规律[J].矿业安全与环保,1987(6):7-10,43.Wei Yongqing,Qin Shuyu,Wang Haibo,et al.Law of gas migration in goaf area without coal pillar working face by wind[J].Mining Safety&Environmental Protection,1987(6):7-10,43.
[15]秦书玉,郭祥贵.高沼气特厚自燃煤层分层同采无煤柱开采的瓦斯治理[J].河北煤炭,1987(1):43-46.Qin Shuyu,Guo Xiangui.Stratification of high biogas extra-thick spontaneous combustion coal seam and the control of gas without coal pillar mining[J].Hebei Coal,1987(1):43-46.
[16]王增全.高瓦斯工作面立体瓦斯抽采技术[J].煤炭科学技术,2013,41(10):86-89.Wang Zengquan.Three-dimensional gas extraction technology for high gas working face[J].Coal Science and Technology,2013,41(10):86-89.
[17]张仰强,程波,季卫宾.基于地应力测量的综放沿空巷道合理护巷煤柱尺寸的设计研究[J].煤炭工程,2012(12):4-6.Zhang Yangqiang,Cheng Bo,Ji Weibin.Design and research on the reasonable size of coal pillar for protecting roadway along the roadway in the fully-mechanized roadway based on the measurement of ground stress[J].Coal Engineering,2012(12):4-6.
[18]蔡洪林,尹贤坤,汤朝均,等.切顶卸压沿空留巷无煤柱开采技术研究与应用[J].矿业安全与环保,2012,39(5):15-18.Cai Honglin,Yin Xiankun,Tang Chaojun,et al.Research and application of no-pillar mining technology in open-pit roadway with tip unloading pressure[J].Mining Safety&Environmental Protection,2012,39(5):15-18.
[19]陈建.新型超前留巷钻孔瓦斯抽采技术研究及效果分析[J].山东煤炭科技,2014(8):61-63.Chen Jian.Research and effect analysis of new drilling gas extraction technology in advanced retaining roadway[J].Shandong Coal Science and Technology,2014(8):61-63.
[20]刘清利,王萌.综放工作面沿空留巷无煤柱开采技术[J].煤炭科学技术,2016,44(5):122-127.Liu Qingli,Wang Meng.No coal pillar mining technology along empty roadway in fully-mechanized working face[J].Coal Science and Technology,2016,44(5):122-127.