半煤岩巷道控制爆破及围岩控制技术
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摘要
通过分析东保卫煤矿半煤岩巷道围岩破碎原因,针对掘进施工爆破震动破坏大以及支护形式不合理的问题,依据东保卫煤矿半煤岩巷道围岩特性,提出了半煤岩巷道控制爆破掘进及围岩"锚带喷"控制技术。对煤岩中爆破孔的参数以及对装药量进行改进,满足爆破掘进的同时又减小了爆破对围岩的震动,使围岩扰动半径控制在0.3 m以内;在控制爆破后,通过减少锚杆支护密度,增加两帮喷浆工序,降低了支护成本,减轻了工人劳动强度,半煤岩回采巷道掘进效率提高40%。
With the analysis on the surrounding rock broken causes of the mine semi coal and rock roadway in Dong baowei Mine,according to the blasting vibration and irrational support mode of the roadway heading operation,based on the surrounding rock features of the semi coal and rock roadway,a controlled blasting heading of the semi coal and rock roadway and the "bolt/steel band/shotcreting" controlled technology of the surrounding rock was provided and the parameters of the blasting boreholes in the coal and rock were distinguished.The explosive loading was improved.Meanwhile the blasting heading could be met,the explosive loading could reduce the blasting vibration to the surrounding rock and the disturbance radius in the surrounding rock could be controlled within 0.3 m.With the controlled blasting,the bolt support density would be reduced.With the shotcreting on the two side walls of the roadway,the support cost and the labor strength could be reduced.Thus the heading efficiency of the semi coal and rock roadway was improved by 40%.
With the analysis on the surrounding rock broken causes of the mine semi coal and rock roadway in Dong baowei Mine,according to the blasting vibration and irrational support mode of the roadway heading operation,based on the surrounding rock features of the semi coal and rock roadway,a controlled blasting heading of the semi coal and rock roadway and the "bolt/steel band/shotcreting" controlled technology of the surrounding rock was provided and the parameters of the blasting boreholes in the coal and rock were distinguished.The explosive loading was improved.Meanwhile the blasting heading could be met,the explosive loading could reduce the blasting vibration to the surrounding rock and the disturbance radius in the surrounding rock could be controlled within 0.3 m.With the controlled blasting,the bolt support density would be reduced.With the shotcreting on the two side walls of the roadway,the support cost and the labor strength could be reduced.Thus the heading efficiency of the semi coal and rock roadway was improved by 40%.
引文
[1]王宏.我国煤矿巷道掘进技术和装备的现状与发展[J].煤炭科学技术,2010,38(1):18-20.
[2]王明洋,宋华,郑大亮,等.深部巷道围岩的分区破裂机制及“深部”界定探讨[J].岩石力学与工程学报,2006,25(9):1771-1776.
[3]黄跃东,刘同海,江崇涛,等.鸡西矿区软弱半煤岩巷特厚复合顶板支护[J].煤炭科学技术,2005,33(6):31-33.
[4]李令春.朔里煤矿煤巷与半煤岩巷控界光面爆破技术[J].煤炭科学技术,2008,36(1):28-30.
[5]刘敬国,段海峰.爆破机理的回弹假说与蓄能爆破技术研究[J].中国矿业,2007,16(12):86-89.
[6]赵学社.煤矿高效掘进技术现状与发展趋势[J].煤炭科学技术,2007,35(4):1-10.
[7]郑峰,段卫东,钟冬望,等.爆破震动研究现状及存在问题的探讨[J].爆破,2006(3):92-94.
[8]阳生权,周健,吕中玉.地下结构及其围岩爆破地震效应[J].工程爆破,2006(l):82-86.
[2]王明洋,宋华,郑大亮,等.深部巷道围岩的分区破裂机制及“深部”界定探讨[J].岩石力学与工程学报,2006,25(9):1771-1776.
[3]黄跃东,刘同海,江崇涛,等.鸡西矿区软弱半煤岩巷特厚复合顶板支护[J].煤炭科学技术,2005,33(6):31-33.
[4]李令春.朔里煤矿煤巷与半煤岩巷控界光面爆破技术[J].煤炭科学技术,2008,36(1):28-30.
[5]刘敬国,段海峰.爆破机理的回弹假说与蓄能爆破技术研究[J].中国矿业,2007,16(12):86-89.
[6]赵学社.煤矿高效掘进技术现状与发展趋势[J].煤炭科学技术,2007,35(4):1-10.
[7]郑峰,段卫东,钟冬望,等.爆破震动研究现状及存在问题的探讨[J].爆破,2006(3):92-94.
[8]阳生权,周健,吕中玉.地下结构及其围岩爆破地震效应[J].工程爆破,2006(l):82-86.
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