预裂爆破在边坡开挖中的应用研究  

APPLICATION OF PRESPLITTING BLASTING IN SLOPE EXCAVATION

作　　者：冯桂云[1] 刘长玲[1] 

机构地区：[1]河南工业职业技术学院建筑工程系,河南南阳473009

出　　处：《工程爆破》2013年第4期25-29,共5页Engineering Blasting

摘　　要：利用LS-DYNA进行了预裂爆破数值模拟,通过对模拟结果的分析,得出了适用于采石场的炮孔直径、炮孔间距、线装药密度等预裂爆破参数。对获取的预裂爆破参数进行现场试验,结果表明在相同条件下,当孔距80cm、线装药密度500g/m时,预裂爆破效果较理想。分析监测数据得知爆破施工对周边环境的影响较小。爆破试验与数值模拟所确定的爆破参数,可用于指导该工程的后续施工。LS-DYNA software was applied to simulate the presplitting blasting. The ideal presplitting blasting parameters were gained through analyzing the numerical simulation results. The field blasting ex- periments were used to verify reliability of the presplitting blasting parameters. Results showed the pres- plitting blasting effect was ideal when the hole distance was 80 cm and linear charge density was 500g/m under the same conditions. Through analyzing the monitoring data, the periphery environment was not in- fluenced by blasting construction. Blasting experiments and numerical simulation were helpful to determine the blasting parameters. This could＇provide a reference for following construction.

关 键 词：边坡稳定 预裂爆破 爆破参数 数值模拟 爆破试验 

分 类 号：TU452[建筑科学—岩土工程]