卸压组合支护技术在夏甸金矿的应用
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摘要
基于夏甸金矿回采巷道破碎地质条件,分析了回采巷道的破坏特征,结合卸压支护作用机理分析,提出了卸压与玻璃钢锚杆加固组合支护方案,确定了回采巷道两帮钻孔及顶板开槽的卸压方式和玻璃钢锚杆支护的参数。工业应用表明,卸压组合支护方式取得了非常好的支护效果,该支护技术可供相似地质条件下松软破碎回采巷道的支护参考借鉴。
Based on the fragile geologic conditions in the extraction roadway of Xiadian Gold Mine,the paper analyzes the features of roadway damage,and with the help pressure relief support mechanism analysis,comes up with the support scheme combining pressure relief and FRP bolt reinforcement,and decides the pressure relief manner for drilling of both side walls of the extraction roadway as well as roof grooving,and the parameters for FRP bolt support. Industrial test shows that the combined pressure relief technology has achieved satisfactory support performance. The support manner can be used as reference by roadways with similar soft and fragile geologic conditions.
Based on the fragile geologic conditions in the extraction roadway of Xiadian Gold Mine,the paper analyzes the features of roadway damage,and with the help pressure relief support mechanism analysis,comes up with the support scheme combining pressure relief and FRP bolt reinforcement,and decides the pressure relief manner for drilling of both side walls of the extraction roadway as well as roof grooving,and the parameters for FRP bolt support. Industrial test shows that the combined pressure relief technology has achieved satisfactory support performance. The support manner can be used as reference by roadways with similar soft and fragile geologic conditions.
引文
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[11]娄嵩.高应力软岩巷道围岩开槽卸压及参数优化[D].准南:安徽理工大学,2017.
[2]王文杰.高应力区卸压与锚杆支护对巷道稳定性影响分析[J].金属矿山,2010(10):1-5.
[3]王文杰.高应力区巷道卸压支护技术及应用[J].金属矿山,2010(3):23-25.
[4]何延峻.导巷卸压支护软岩巷道的研究[J].淮南工业学院学报,1999,19(1):1-6.
[5]李达军.深部软岩巷道卸压支护技术研究[J].矿业工程研究,2009,24(2):10-13.
[6]于永光.卸压支护在软岩巷道施工中的应用[J].山东煤炭科技,2010(3):27-28.
[7]黄军,叶义成,王文杰,等.基于应用的GFRP锚杆拉伸和剪切性能试验研究[J].中国矿业,2010,19(10):94-97.
[8]黄军,叶义成,王文杰.巷道锚杆支护系统的安全稳定性分析[J].现代矿业,2010(1):120-122.
[9]郭长生.卸压支护技术在回采巷道中的应用[J].煤矿现代化,2005(6):20-21.
[10]沈杰.软岩大断面硐室卸压与支护技术研究[J].煤矿工程,2011(4):67-68.
[11]娄嵩.高应力软岩巷道围岩开槽卸压及参数优化[D].准南:安徽理工大学,2017.