护壁爆破在煤矿巷道掘进中的应用  

Application of Protecting Borehole Wall Blasting Technology in Roadway Excavation

作　　者：张志呈[1] 肖正学[1] 张志恆 户九龙 刘传亮 

机构地区：[1]西南科技大学,四川省绵阳市621010 [2]华亭煤电股份有限公司东峡煤矿,甘肃省平凉市744100 [3]山东潍坊五井煤矿,山东省潍坊市262603

出　　处：《煤矿爆破》2009年第4期31-33,共3页Coal Mine Blasting

摘　　要：本文介绍了护壁爆破原理和方法以及其在东峡煤矿、潍坊煤矿的应用情况。护壁爆破与光面爆破的爆破效果相比眼痕率提高一倍,超挖量减少20%～30%,巷道壁上的破裂减少,且眼痕壁无宏观裂纹。This paper introduced the principle and method of protecting borehole wall blasting and its application in the Dongxia and Weifang coal mine. Compared with smooth blasting technology, the rates of half-hole marks of protecting borehole wall blasting has been doubled, the amount of over excavation has been reduced 20%-30%, the fracture in the surface of the excavation roadway also has been reduced, and there is no macroscopic crack in the hole wall.

关 键 词：护壁爆破 巷道掘进 眼痕率 

分 类 号：TD235.37[矿业工程—矿井建设]