深孔松动爆破在硬岩巷道综掘中的应用研究  

Application study on deep hole loosening blasting in full-mechanized hard-rock roadway excavating

作　　者：孟秀峰 杨博 Meng Xiufeng1, Yang Bo1,2(1. Shanxi Institute of Energy, Jinzhong, Shanxi 030600, China; 2. College of Energy, Xi＇an University of Science and Technology, Xi＇an, Shaanxi 710054, Chin)

机构地区：[1]山西能源学院,山西省晋中市030600 [2]西安科技大学能源学院,陕西省西安市710054

出　　处：《中国煤炭》2018年第3期91-94,共4页China Coal

摘　　要：针对硬岩巷道使用综掘机施工速度慢、掘进成本高的问题,提出了深孔松动爆破技术配合综掘机掘进以提高掘进速度。以潞安矿业(集团)公司古城煤矿为例,通过理论分析和数值计算,设计大直径深孔松动爆破参数,并进行现场试验。结果表明:深孔松动爆破后,巷道断面形成3个区域:破碎区、裂隙区、稳定区,0.1ms形成破碎区,1.2ms后形成裂隙区,裂隙区半径大约为1.65m。综掘机掘进速度提高了约40%,截齿消耗降低了约60%,改善了工作环境。Aiming at slow construction speed and high excavating cost of fully mechanized excavator in hard-rock roadway, deep hole loosening blasting technology was used to increase the excavating speed as a cooperative method of fully mechanized excavator. Taking Gucheng Coal Mine of Lu＇an Mining Industry Group as an example, large-diameter deep hole loosening blasting parameters were designed by theoretical analysis and numerical calculation, and the field test was carried out. The results showed that after deep hole loosening blasting, roadway section was divided into three zones, broken zone formed after 0. 1 ms, fracture zone formed after 1,2 ms and stable zone at last, the radius of fracture zone was about 1.65 m. After applying this technology, the excavating speed of fully mechanized excavator increased by about 40% and cutting pick consumption was reduced by 60%, and the work environment was also improved.

关 键 词：深孔松动爆破 硬岩巷道掘进 综掘机 爆破参数 

分 类 号：TD263.3[矿业工程—矿井建设]