小断面梯形岩巷爆破掘进参数优化及应用研究  

Optimization and application of blasting driving parameters for small section trapezoidal rock roadway

作　　者：夏方顺 徐家俊 梁俊奇 Xia Fangshun;Xu Jiajun;Liang Junqi(College of Safety Engineering,North China institute of Science and Technology,Yanjiao 065201,China)

机构地区：[1]华北科技学院安全工程学院,北京燕郊065201

出　　处：《煤炭与化工》2020年第6期24-27,共4页Coal and Chemical Industry

基　　金：中央高校基本科研业务费资助项目(3142019053)。

摘　　要：为解决潞安集团潞宁煤矿小断面梯形岩巷掘进炮眼利用率低、炸药单耗高、巷道成型差等问题,以准直眼掏槽技术为基础,结合巷道岩性特征,在不改变现有设备的条件下,优化孔深、孔数、药量和起爆顺序等爆破参数,实施全断面一次起爆技术,实现了安全高效的爆破掘进。该方法实现了在狭窄空间内准确打眼,解决了4个顶角岩石夹制力较强的问题,改善了爆破效果,炮眼利用率从73.9%提高到86.9%,提高了掘进速度。In order to solve the problems of low blast hole utilization,high explosive consumption,and poor roadway formation in a small section trapezoidal rock roadway in a certain mine,the collimation technology was used as the basis,combining the lithology characteristics of the roadway and the existing equipment without changing conditions,blasting parameters such as hole depth,number of holes,charge amount and initiation sequence were optimized,and a one-time initiation technology for full-section of middle-deep holes was made to achieve safe and efficient blasting.This method can not only achieve accurate drilling in a narrow space,but also solve the problem of strong clamping force of the four apical corner rocks,and improve the blasting effect.The blasthole utilization rate increased from 73.9%to 86.9%,and the mining speed was greatly improved.

关 键 词：梯形断面 巷道掘进 参数优化 炮眼利用率 

分 类 号：TD235[矿业工程—矿井建设]