煤矿硬岩巷道掘进大直径炮孔爆破试验研究
|
摘要
增大药卷直径可提高炸药爆速,配以较大直径炮孔爆破能够增强岩石的破裂和破碎。为了提高煤矿硬岩巷道掘进爆破效率,在液压凿岩台车施工巷道首次进行大直径炮孔和大直径药卷中深孔爆破试验研究,同时对各段雷管起爆延期时间进行优化,其中第2段雷管的延期时间由原先的25 ms增加至50 ms,目的是使掏槽爆破后岩石有足够的时间破碎、运动和抛掷出槽腔,形成新的自由面。并配用底部集能装药掏槽爆破技术和水垫层周边光爆装药结构,爆破试验取得了良好的效果。
Large diameter explosive charge can improve blasting velocity and destroy rock much efficiently combined with large diameter hole. To improve blasting efficiency in hard rock roadway in coal mine,the mid-deep hole blasting testing with large diameter hole and large diameter cartridge are carried out in construction roadway. Meanwhile,the detonating delay time is optimized from the original 25 ms to 50 ms for the section 2,which supplies enough time for rock breaking,moving and new free face producing. Good blasting effect is achieved by using power concentrated charge structure at hole bottom coupled with water cushion scheme.
Large diameter explosive charge can improve blasting velocity and destroy rock much efficiently combined with large diameter hole. To improve blasting efficiency in hard rock roadway in coal mine,the mid-deep hole blasting testing with large diameter hole and large diameter cartridge are carried out in construction roadway. Meanwhile,the detonating delay time is optimized from the original 25 ms to 50 ms for the section 2,which supplies enough time for rock breaking,moving and new free face producing. Good blasting effect is achieved by using power concentrated charge structure at hole bottom coupled with water cushion scheme.
引文
[1]杨仁树.我国煤矿岩巷安全高效掘进技术现状与展望[J].煤炭科学技术,2013,41(90):18-23.[1]YANG Ren-shu.Present status and outlook on safety and high efficient heading technology of mine rock roadway in China[J].Coal Science and Technology,2013,41(90):18-23.(in Chinese)
[2]夏红兵,徐颖,宗琦,等.深部大断面硬岩巷道掘进中深孔爆破参数研究[J].金属矿山,2008(1):44-52.[2]XIA Hong-bing,XUYing,ZONG Qi,et al.Research on long-hole blasting parameters in large cross-section roadway heading in hard rock at depth[J].Metalmine,2008(1):44-52.(in Chinese)
[3]郝飞.坚硬岩石巷道中深孔掘进爆破实践[J].煤炭科学技术,2009,37(9):24-26.[3]HAO Fei.Practices on deep borehole blasting for mine roadway heading in hard rock[J].Coal Science and Technology,2009,37(9):24-26.(in Chinese)
[4]余永强,王超,褚怀保,等.硬岩巷道中深孔爆破掘进复楔形掏槽试验研究[J].爆破,2013,30(2):95-99.[4]YU Yong-qiang,WANG Chao,CHU Huai-bao,et al.Duplex wedge cutting on mid-depth borehole tunneling blasting in hard rock[J].Blasting,2013,30(2):95-99.(in Chinese)
[5]宗琦,刘菁华.煤矿岩石巷道中深孔爆破掏槽技术应用研究[J].爆破,2010,27(4):35-39.[5]ZONG Qi,LIU Jing-hua.Application research on cutting technology of m id-deep hole blasting in coalm ine rock tunnel[J].Blasting,2010,27(4):35-39.(in Chinese)
[6]戴俊,杜晓丽.岩石巷道楔形掏槽爆破参数研究[J].矿业研究与开发,2011,31(2):90-93.[6]DAI Jun,DU Xiao-li.Research on blasting parameters of wedge-shaped cutting for rock tunnel driving[J].Mining Research and Development,2011,31(2):90-93.(in Chinese)
[7]黄文尧,颜事龙.炸药化学与制造[M].北京:冶金工业出版社,2009.
[8]陆明.提高硝酸铵炸药威力的途径研究[J].爆破器材,2011,40(5):1-4.[8]LU Ming.Study on the improving strength for ammonium nitrate explosive[J].Explosive Materials,2011,40(5):1-4.(in Chinese)
[9]唐友生,孙德勇,罗比武,等.一种新型三级煤矿许用乳化炸药的研制[J].爆破器材,2008,37(1):9-11.[9]TANG You-sheng,SUN De-yong,LUO Bi-wu,et al.Research on a new class 3 coal mine permissible emulsion explosive[J].Explosive Materials,2008,37(1):9-11.(in Chinese)
[10]徐颖,宗琦.地下工程爆破理论及应用[M].徐州:中国矿业大学出版社,2001:9-14.
[11]宗琦,任庆峰.煤矿硬岩下山巷道掘进中深孔爆破技术试验研究[J].爆破,2011,28(2):49-52.[11]ZONG Qi,RENQing-feng.Experimental research on middeep hole blasting technology in diphead tunnel of coal mine hard rock[J].Blasting,2011,28(2):49-52.(in Chinese)
[12]高文乐,周奥博,张强.坚硬岩石巷道爆破掘进参数优化[J].爆破,2015,32(2):64-67.[12]GAO Wen-le,ZHOU Ao-bo,ZHANG Qiang.Parameters optimization on tunnel blasting in hard rock[J].Blasting,2015,32(2):64-67.(in Chinese)
[13]杨国梁,冯栋凯,冀文欢,等.不同掏槽形式成腔过程比较数值分析[J].爆破,2015,32(2):59-63.[13]YANG Guo-liang,FENG Dong-kai,JI Wen-huan,et al.Numerical analysis of comparison of cavities formation by different cutting patterns[J].Blasting,2015,32(2):59-63.(in Chinese)
[2]夏红兵,徐颖,宗琦,等.深部大断面硬岩巷道掘进中深孔爆破参数研究[J].金属矿山,2008(1):44-52.[2]XIA Hong-bing,XUYing,ZONG Qi,et al.Research on long-hole blasting parameters in large cross-section roadway heading in hard rock at depth[J].Metalmine,2008(1):44-52.(in Chinese)
[3]郝飞.坚硬岩石巷道中深孔掘进爆破实践[J].煤炭科学技术,2009,37(9):24-26.[3]HAO Fei.Practices on deep borehole blasting for mine roadway heading in hard rock[J].Coal Science and Technology,2009,37(9):24-26.(in Chinese)
[4]余永强,王超,褚怀保,等.硬岩巷道中深孔爆破掘进复楔形掏槽试验研究[J].爆破,2013,30(2):95-99.[4]YU Yong-qiang,WANG Chao,CHU Huai-bao,et al.Duplex wedge cutting on mid-depth borehole tunneling blasting in hard rock[J].Blasting,2013,30(2):95-99.(in Chinese)
[5]宗琦,刘菁华.煤矿岩石巷道中深孔爆破掏槽技术应用研究[J].爆破,2010,27(4):35-39.[5]ZONG Qi,LIU Jing-hua.Application research on cutting technology of m id-deep hole blasting in coalm ine rock tunnel[J].Blasting,2010,27(4):35-39.(in Chinese)
[6]戴俊,杜晓丽.岩石巷道楔形掏槽爆破参数研究[J].矿业研究与开发,2011,31(2):90-93.[6]DAI Jun,DU Xiao-li.Research on blasting parameters of wedge-shaped cutting for rock tunnel driving[J].Mining Research and Development,2011,31(2):90-93.(in Chinese)
[7]黄文尧,颜事龙.炸药化学与制造[M].北京:冶金工业出版社,2009.
[8]陆明.提高硝酸铵炸药威力的途径研究[J].爆破器材,2011,40(5):1-4.[8]LU Ming.Study on the improving strength for ammonium nitrate explosive[J].Explosive Materials,2011,40(5):1-4.(in Chinese)
[9]唐友生,孙德勇,罗比武,等.一种新型三级煤矿许用乳化炸药的研制[J].爆破器材,2008,37(1):9-11.[9]TANG You-sheng,SUN De-yong,LUO Bi-wu,et al.Research on a new class 3 coal mine permissible emulsion explosive[J].Explosive Materials,2008,37(1):9-11.(in Chinese)
[10]徐颖,宗琦.地下工程爆破理论及应用[M].徐州:中国矿业大学出版社,2001:9-14.
[11]宗琦,任庆峰.煤矿硬岩下山巷道掘进中深孔爆破技术试验研究[J].爆破,2011,28(2):49-52.[11]ZONG Qi,RENQing-feng.Experimental research on middeep hole blasting technology in diphead tunnel of coal mine hard rock[J].Blasting,2011,28(2):49-52.(in Chinese)
[12]高文乐,周奥博,张强.坚硬岩石巷道爆破掘进参数优化[J].爆破,2015,32(2):64-67.[12]GAO Wen-le,ZHOU Ao-bo,ZHANG Qiang.Parameters optimization on tunnel blasting in hard rock[J].Blasting,2015,32(2):64-67.(in Chinese)
[13]杨国梁,冯栋凯,冀文欢,等.不同掏槽形式成腔过程比较数值分析[J].爆破,2015,32(2):59-63.[13]YANG Guo-liang,FENG Dong-kai,JI Wen-huan,et al.Numerical analysis of comparison of cavities formation by different cutting patterns[J].Blasting,2015,32(2):59-63.(in Chinese)