大断面岩巷掘进光爆参数优化及实践  

Blasting Parameter Optimization and Practice in Large Section Rock Roadway

作　　者：曹志安 高明仕[2,3] 李玉龙 陈曦[2,3] 

机构地区：[1]永城煤电控股集团有限公司,河南永城476600 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]深部煤炭资源开采教育部重点实验室,江苏徐州221116 [4]永煤集团股份有限公司顺和煤矿,河南永城476600

出　　处：《煤矿安全》2014年第6期166-169,共4页Safety in Coal Mines

基　　金：江苏高校优势学科建设工程资助项目(PAPD);教育部科学技术研究重点资助项目(109075)

摘　　要：针对大断面岩巷掘进爆破过程中出现的"抽炮"、成型不好、超挖欠挖现象,提出了复式双楔形混合掏槽方式,根据掘进断面岩石的强度及周边眼、崩落眼的参数计算公式,对周边眼、崩落眼间距、最小抵抗线、装药量进行精确地计算。工程实践表明,优化后的光面爆破参数,提高了掏槽爆破效果和装岩效率、巷道成型较好,减少了对围岩的破坏作用。Aiming at the problem of large section roadway occurred ＂pumping gun＂ , bad forming, over- break over- excavation phenomenon during rock blasting, a double pair of wedge mixed cut ways, depending on the strength of rock excavation section and the surrounding eye, caving eye parameters formula, the surrounding eye, caving eye spacing, minimum line, the amount of the drug is accurately calculated. Engineering practice showed that the optimized smooth blasting parameters improved cut blasting and mucking efficiency, roadway shape was better, which reduced the damaging effects of the surrounding rock.

关 键 词：岩巷 掘进爆破 光爆参数 爆力转换 工业性试验 

分 类 号：TD235.3[矿业工程—矿井建设]