深孔爆破在综放开采坚硬顶煤预先弱化和瓦斯抽采中的应用

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Abstract In order to solve the problem that the top-coal cannot be broken fully in mines under ground pressure causing the low recovery ratio of resources and violent strata behaviors in hard，thick and high-gas coal seam by fully mechanized top coal caving mining，the deep holes blasting forced roof caving was taken to pre-weaken the top-coal and gas drainage. The pre-weakening roof and pressure relief gas extraction mechanism was expounded by numerical simulation and theoretical analysis method. After dynamite blasting in hard top-coal，the surrounding coal of blasting holes produces a large number of fissures and significant displacement by explosion stress waves，stress was redistributed and thick top-coal was caved. At the same time，gas was desorbed and flowed along the fissure，the loose blasting crushing circle was formed around the hole and the efficiency of gas extraction was improved. Finally，the application of deep-hole blasting to pre-weakening roof and pressure relief gas extraction field test was taken in the 3801 working face of Shuiliandong coal mine. It is a good reference to high gas and hard top-coal caving working face in special thick seam mining under similar conditions.

Key words： mining engineering deep borehole blasting fully mechanized caving hard and thick coal seam top-coal weakening gas extraction

Received: 12 August 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS1/3361

[1] 刘健，刘泽功，石必明. 低透气性突出煤层巷道快速掘进的试验研究[J]. 煤炭学报，2007，32(8)：827–831.(LIU Jian，LIU Zegong，SHI Biming. Study on the roadway excavation rapidly in the low permeability outburst coal seam[J]. Journal of China Coal Society，2007，32(8)：827–831.(in Chinese)) [2] 刘健，刘泽功. 深孔预裂爆破技术在井筒揭煤中的应用研究[J].煤炭科学技术，2012，40(2)：19–24.(LIU Jian，LIU Zegong. Study on application of deep borehole pre-fracturing blasting technology to seam opening in mine shaft[J]. Coal Science and Technology，2012，40(2)：19–24.(in Chinese)) [3] 林柏泉. 深孔控制卸压爆破及其防突作用机理的实验研究[J]. 阜新矿业学院：自然科学版，1995，14(3)：16–21.(LIN Baiquan. The research on outburst preventive mechanism of controlling stress relaxation blast in deep borehole of coal tunnel[J]. Journal of Fuxin Mining Institute：Natural Science，1995，14(3)：16–21.(in Chinese)) [4] 龚敏，张凤舞，文斌，等. 煤巷底板岩石爆破提高瓦斯抽放率的应用与数值模拟[J]. 煤炭学报，2012，37(6)：972–977. (GONG Min，ZHANG Fengwu，WEN Bin. Numerical simulation and application on blasting to improve gas drainage rate in floor rock of coal roadway[J]. Journal of China Coal Society，2012，37(6)：972–977.(in Chinese)) [5] 龚敏，刘万波，王德胜，等. 提高煤矿瓦斯抽放效果的控制爆破技术[J]. 北京科技大学学报，2006，28(3)：223–226.(GONG Min，LIU Wanbo，WANG Desheng，et al. Control blasting technique to improve gas predrainage effect in a coal mine[J]. Journal of University of Science and Technology Beijing，2006，28(3)：223–226.(in Chinese)) [6] 龚敏，熊本良，王楚翰，等. 穿层爆破各煤层动态应力分布与抽放效果探讨[J]. 岩石力学与工程学报，2012，31(1)：2 899–2 996. (GONG Min，XIONG Benliang，WANG Chuhan，et al. Discussion on distribution of dynamic stress and gas draining efficiency in coal seams by blasting through layers of coal-rock[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(1)：2 899–2 996.(in Chinese)) [7] 张春华，刘泽功，徐涛，等. 石门对掘揭开急倾斜煤层突出与爆破增透消突技术[J]. 煤炭学报，2010，35(1)：85–88.(ZHANG Chunhua，LIU Zegong，XU Tao，et al. Coal and gas outburst in steep inclined coal seam uncovered by two reverse drifts and technology of outburst elimination by increasing permeability with blasting[J]. Journal of China Coal Society，2010，35(1)：85–88.(in Chinese)) [8] 高魁，刘泽功，刘健，等. 石门揭构造软煤消突与快速成巷技术研究[J]. 煤炭科学技术，2012，40(11)：66–68.(GAO Kui，LIU Zegong，LIU Jian，et al. Study on outburst elimination and rapid mine roadway construction technology during cross-cut opened structure soft coal[J]. Coal Science and Technology，2012，40(11)：66–68.(in Chinese)) [9] 索永录. 综放开采坚硬顶煤预先爆破弱化技术基础研究[博士学位论文][D]. 西安：西安科技大学，2004.(SUO Yonglu. Basic Study on technology of pre-blast weakening hard top-coal in fully mechanized caving faces[Ph. D. Thesis][D]. Xi?an：Xi?an University of Science and Technology，2004.(in Chinese)) [10] 索永录，孙书亮，段王拴，等. 高瓦斯综放面预先爆破弱化坚硬顶煤试验[J]. 煤炭科学技术，2009，37(3)：1–3.(SUO Yonglu，SUN Shuliang，DUAN Wangshuan，et al. Test on hard top coal pre-blasting and weakening for high gassy fully mechanized top coal caving mining face[J]. Coal Science and Technology，2009，37(3)：1–3.(in Chinese)) [11] 索永录. 坚硬顶煤弱化爆破的宏观损伤破坏程度研究[J]. 岩土力学，2005，26(6)：893–895.(SUO Yonglu. Study for macro-damage degree of weakening blast in hard top-coal[J]. Rock and Soil Mechanics，2005，26(6)：893–895.(in Chinese)) [12] 郭德勇，商登莹，吕鹏飞，等. 深孔聚能爆破坚硬顶板弱化试验研究[J]. 煤炭学报，2013，38(7)：1 149–1 153.(GUO Deyong，SHANG Dengying，LU Pengfei，et al. Experimental research of deep-hole cumulative blasting in hard roof weakening[J]. Journal of China Coal Society，2013，38(7)：1 149–1 153.(in Chinese)) [13] 高魁，刘泽功，刘健，等. 深孔爆破在深井坚硬复合顶板沿空留巷强制放顶中的应用[J]. 岩石力学与工程学报，2013，32(8)：1 588–1 594.(GAO Kui，LIU Zegong，LIU Jian，et al. Study on application of deep borehole blasting to gob-side entry retaining forced roof caving in hard and compound roof deep well[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(8)：1 588–1 594.(in Chinese)) [14] 张杰. 浅埋煤层顶板深孔预爆强制初放研究[J]. 采矿与安全工程学报，2012，29(3)：339–343.(ZHANG Jie. Study on forced roof caving to hard roof by deep-hole pre-blasting in shallow coal seam[J]. Journal of Mining and Safety Engineering，2012，29(3)：339–343.(in Chinese)) [15] 郝福坤，周同学，姜玉超. 人工强制放顶沿空留巷技术及其应用[J]. 煤炭科学技术，2006，34(2)：16–24.(HAO Fukun，ZHOU Tongxue，JIANG Yuchao. Forced roof caving technology and application to goaf side entry retaining[J]. Coal Science and Technology，2006，34(2)：16–24.(in Chinese)) [16] 杨相海，张杰，余学义. 强制放顶爆破参数研究[J]. 西安科技大学学报，2010，30(3)：287–290.(YANG Xianghai，ZHANG Jie，YU Xueyi. Blasting parameter of compulsive roof cave-in[J]. Journal of Xi?an University of Science and Technology，2010，30(3)：287–290.(in Chinese)) [17] 索永录. 坚硬煤层综采放顶煤开采技术[M]. 西安：陕西科学技术出版社，2001：86–103.(SUO Yonglu. The mining technology of hard coal fully mechanized caving[M]. Xi?an：Shaanxi Science and Technology Press，2001：86–103.(in Chinese)) [18] 戴俊. 柱状装药爆破的岩石压碎圈与裂隙圈计算[J]. 辽宁工程技术大学学报，2001，20(2)：144–147.(DAI Jun. Calculation of radii of the broken and cracked areas in rock by a long charge explosion[J]. Journal of Liaoning Technical University，2001，20(2)：144–147.(in Chinese)) [19] 郭文章，王树仁，陈寿峰，等. 节理岩体爆破数值模型及模拟研究[J]. 岩土力学，1998，19(3)：1–9.(GUO Wenzhang，WANG Shuren，CHEN Shoufeng，et al. Numerical model and simulation on jointed rock masses under blasting[J]. Rock and Soil Mechanics，1998，19(3)：1–9.(in Chinese)) [20] 杨相海，张杰，余学义. 强制放顶爆破参数研究[J]. 西安科技大学学报，2010，30(3)：287–290.(YANG Xianghai，ZHANG Jie，YU Xueyi. Blasting parameter of compulsive roof cave-in[J]. Journal of Xi?an University of Science and Technology，2010，30(3)：287–290.(in Chinese))