井筒揭煤深孔预裂爆破注浆防突技术的研究  

Research on Shaft Uncovering Coal by Deep Hole Pre-splitting Blasting Grouting Outburst Prevention Technique

作　　者：马怀田 黄文尧[1] 王道阳[1] 杨雷[1] 汪宏祥 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《煤炭技术》2015年第5期134-136,共3页Coal Technology

基　　金：安徽省高等学校省级自然科学基金资助项目(KJ2013A102)

摘　　要：在井筒低透气性、高瓦斯煤层中采用深孔预裂爆破注浆防突是一项新技术,借助于实验室模型实验研究爆破注浆的防突机理并进行工程爆破实践。结果表明:模型爆破后,煤岩层中形成了互相贯通的裂隙,注浆材料在裂隙中渗透,使爆破孔与控制孔间的煤体固结并与顶板结合;现场试验中该方法大幅度提高了瓦斯抽采率和煤层注浆量,消突效果显著。Using deep hole presplit blasting grouting in the low permeability,gas coal seam wellbore to prevent outburst is a new technology,with the aid of laboratory model test to study on the mechanism of blasting grouting in protection against outburst and for engineering blasting practice.Result shows that the model after blasting,the interpenetration of cracks between coal strata and rock formed,grouting material infiltration in the fracture,formed the coal between blasting hole and control hole together and consolidated with the roof; this method greatly improved the gas extraction rate and coal seam grouting volume in field test,eliminate the highlight effect is remarkable.

关 键 词：深孔预裂爆破 井筒揭煤 注浆围堰 防突 

分 类 号：TD235.4[矿业工程—矿井建设]