钻孔卸压参数研究及应用  

Studying and Application of Drilling Hole Loading Relief Parameters

作　　者：贾传洋[1] 韩宇超 王海龙[1] 刘珂铭[1] 于献彬[1] 

机构地区：[1]临沂大学土建学院,山东临沂276000

出　　处：《煤矿开采》2018年第1期65-68,103,共5页Coal Mining Technology

基　　金：山东省自然科学基金资助项目(ZR2017PEE018;ZR2017BEE001);大学生创新创业训练计划项目(201710452094);临沂大学博士研究基金(LYDX2016BS117)

摘　　要：为了研究钻孔卸压效果影响因素,采用室内试验与FLAC3D数值模拟软件,分析了钻孔直径、钻孔间距等对卸压效果的影响。研究结果表明:裂纹扩展贯通导致的应力释放是钻孔产生卸压作用的根本原因;同时,在其他因素一定的条件下,卸压效果随钻孔直径的增大而提高,钻孔间距越小卸压效果越显著。In order to study influence effects of loadine relief by drilling hole, and test indoor and FLAC3Dnumerical simulation soft-ware was applied, the influence that drilling diameter and spacing to loading relief was studied. The results showed that stress relief wasthe primary cause of loading relief by drilling hole, which is induced by crack propagation and cut-through, at the same time under thecondition that other factors unchanged, loading relief effect improved with drilling hole diameter increasing and drilling spacing decrea-sing.

关 键 词：钻孔卸压 钻孔直径 钻孔间距 数值模拟 

分 类 号：TD402[矿业工程—矿山机电]