不同位置减震沟对爆破效果影响数值模拟研究  

Numerical Simulation Study on the Influence of Shock Absorption Ditch at Different Positions on Blasting Effect

作　　者：张袁娟 向彬 ZHANG Yuan-juan;XIANG Bin(Department of Safety Engineering,Henan Institute of Engineering,Zhengzhou 451191,China;Hubei Yihua Group Mining Co.,Ltd,Yichang 443100,China)

机构地区：[1]河南工程学院安全工程学院,河南郑州451191 [2]湖北宜化集团矿业有限责任公司,湖北宜昌443100

出　　处：《煤》2022年第4期6-8,共3页Coal

基　　金：河南工程学院博士基金(D2013022);河南省教育厅科学技术研究重点项目(14B440005);国家自然科学基金(51104111);郑州市科技攻关项目(141PPTGG375)。

摘　　要：为了分析距离爆源不同位置的减震沟对爆破效果的影响,文章运用大型非显式动力软件LS-DYNA分别对无减震沟和减震沟距离爆源分别为15 m和25 m减震沟的减震效果进行模拟,通过峰值振速衰减规律对数值模拟结果进行论证,并结合现场试验进行验证,不同位置减震沟对爆破振动均有较好的减震效果,因此,减震沟的位置应根据工况选择合理的距离进行设置。In order to analyze the influence of the damping ditch at different positions from the blasting source on the blasting effect,using the explicit nonlinear dynamic analysis finite element program LS-DYNA simulate the damping effect of the damping ditch with 15 m、25 m and no damping ditch from blasting source respectively,the numerical simulation analysis effect is demonstrated through the peak vibration velocity attenuation law.And combined with the field test to verify,it is concluded that the damping ditch with different positions has good damping effect on the blasting vibration.Therefore,it is necessary to set position of the damping ditch should be according to the working condition.

关 键 词：减震沟 LS-DYNA 数值模拟 爆破效果 

分 类 号：TD235[矿业工程—矿井建设]