顶板深孔预裂爆破提高综放孤岛工作面初采率研究  

Study on Application of Pre-Fracturing Blasting with Deep Borehole in Roof to Improve Initial Mining Rate of Fully Mechanized Top Coal Caving Mining Face in Seam Island

作　　者：陈胜利[1] 沈玉旭[2] 康天合[3] 

机构地区：[1]山西兰花科技创业股份有限公司,山西晋城048000 [2]山西煤炭管理干部学院,山西太原030006 [3]太原理工大学采矿工艺研究所,山西太原030024

出　　处：《煤炭工程》2013年第11期47-49,共3页Coal Engineering

基　　金：国家自然科学基金(50974093);山西省科技攻关项目(2011032101504)

摘　　要：通过顶板岩石的力学特性分析、深孔预裂爆破切顶的数值模拟分析和工程应用,对深孔预裂爆破提高综放孤岛面初采期间煤炭采出率进行系统的研究,研究表明,综放孤岛面顶板采用深孔预裂爆破技术,工作面初次来压步距缩短了9.6m,顶煤回收率提高了14.38%,实现了综放孤岛面的安全高效开采。With an analysis on the mechanics features of the roof strata, an analysis on the numerical simulation of the pre - fracturing blasting with the deep boreholes for the roof cutting and the engineering application, a systematic study was conducted on the pre - fracturing blasting with the deep boreholes to improve the coal mining rate at the initial mining period of the fully mechanized top coal caving mining face in the seam island. The study showed that after the pre - fracturing blasting technology applied to the roof of the fully mechanized top coal caving mining face in the seam island, the distance of the initial roof weighting in the coal mining face was reduced with 9. 6m, the top coal recovery rate was improved by ld. 38% and a safety and high efficient mining of the fully mechanized top coal caving mining face in the seam island was realized.

关 键 词：综放工作面 坚硬顶板 深孔预裂爆破 初采率 UDEC 

分 类 号：TD823[矿业工程—煤矿开采] TD235.33[矿业工程—矿山开采]