煤矿深孔预裂爆破技术应用研究  

RESEARCH ON APPLICATION OF DEEP-HOLE PRESPLITTING BLASTING TECHNOLOGY IN THE COAL MINE

作　　者：陈秋宇[1] 黄文尧[1] 袁胜芳[1] 余燕[1] 方贞文[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《工程爆破》2011年第2期37-39,共3页Engineering Blasting

摘　　要：为解决较厚坚硬煤层的瓦斯突出和回采率低的问题,采用深孔预裂爆破的方法增加其透气性,并利用煤层松动产生的局部应力突变增加落煤量。根据爆破理论计算了爆破参数,确定了爆炸作用的裂隙范围。实践表明,煤层瓦斯含量降低,提高了回采率,试验与理论基本一致。In order to solve the problems of gas outburst and low recovery rate in thick hard coal seam,the deep-hole presplitting blasting was adopted to increase permeability of the coal seam.The quantity of coal-dropping was increased as a result of the local stress change caused by loose blasting.Blasting parameters and cracking range of explosive action were calculated according to explosive theory.The engineering practice indicated that the gas content of the coal seam was decreased and the recovery rate was increased.The experiment result was in concordance with the result of theoretic calculation.

关 键 词：爆破理论 深孔预裂爆破 坚硬煤层 瓦斯 回采率 

分 类 号：TD823[矿业工程—煤矿开采]