“小构造”复杂岩石条件下掏槽爆破的试验研究  

Experimental Research on Cut Blasting Under Complex Rock Condition with Small Structure

作　　者：陈元利 付玉华[2,3] 郭丽艳 王庆 张康康 CHEN Yuan;FU Yuhua;GUO Liyan;WANG Qing;ZHANG Kangkang(Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;School of Applied Science,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;Jiangxi Key Laboratory of Mining Engineering,Ganzhou,Jiangxi 341000,China;Cengong County State Taxation Bureau,Qiandongnan Miao and Dong Autonomous Prefecture,Guizhou 557800,China)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州市341000 [2]江西理工大学应用科学学院,江西赣州市341000 [3]江西省矿业工程重点实验室,江西赣州市341000 [4]岑巩县国家税务局,贵州黔东南苗族侗族自治州557800

出　　处：《矿业研究与开发》2020年第6期23-27,共5页Mining Research and Development

摘　　要：为解决某矿山掘进爆破进尺小、炮孔利用率低的问题,通过理论分析并结合矿山实际矿岩体构造和矿岩固有性质,提出了"1+8"和"2+8"两种掏槽爆破方案。试验表明:8个空孔可为掏槽爆破提供足够的补偿空间;在矿岩体比较完整、无明显夹石情况下,"1+8"掏槽爆破方案取得了良好的爆破效果,掏槽炮孔利用率能达到90%以上;为了克服小构造影响,应适当地增加装药眼和炸药量。In order to solve the problems of small blasting footage and low utilization rate of blasting hole in a mine,two cut blasting schemes of"1+8"and"2+8"were put forward by theoretical analysis and combining with the actual structure of rock mass and the inherent properties of rock.The research showed that eight empty holes could supply enough space for cut blasting.Under the condition of relatively complete rock mass and no obvious stone inclusion,the cut blasting scheme of"1+8"could achieve a good blasting effect,and the utilization rate of empty blasting holes could reach more than 90%.In order to overcome the influence of small structure,the number of charging holes and amount of explosives should be increased appropriately.

关 键 词：直眼掏槽 爆破方案 装药结构 爆破效果 小构造 

分 类 号：TD235.1[矿业工程—矿井建设]