坚硬顶板爆破弱化对综采面高抽巷瓦斯抽采率影响的研究  

Study on Influence of the Gas Extraction Rate in High Level Suction Roadway by Blast Weakening Hard Roof

作　　者：陈健[1] 戴军超 杨雷[3] 王道阳[3] 黄文尧[3] 

机构地区：[1]淮南矿业集团有限责任公司瓦斯地质研究院 [2]淮沪煤电有限公司丁集煤矿 [3]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《煤矿爆破》2014年第2期25-28,共4页Coal Mine Blasting

摘　　要：综采面遇到坚硬顶板难以垮落,形成大面积悬顶,造成高抽巷瓦斯抽采浓度低,而综采面上隅角瓦斯浓度大,严重影响了综采面的回采速度。通过设计深孔爆破参数和爆破工艺,使综采面顶板岩石弱化,实践表明,在上顺槽回风巷对顶板进行超前深孔预裂爆破,提高了综采面高抽巷瓦斯抽采率,为综采面安全高效回采提供了一条解决问题的途径。As the formation of large area roof hanging for the comprehensive mechanized mining face with hard roof, pumping gas extraction concentration is low in high level suction roadway, while concentration of fully mechanized upper comer gas is high, which causes the speed of the face is heavily influenced. The roof rock of the face is weakened via the design for long-hole blasting parameters and blasting technology. The fact shows that the gas extraction rate in high level suction roadway in the upside return airway was increased by using the deep hole pre-splitting blasting on the roof. It is an efficient way for the safety and efficiency mining.

关 键 词：高抽巷 深孔爆破 坚硬顶板 综采面 瓦斯治理 

分 类 号：TD712.62[矿业工程—矿井通风与安全]