爆破振动组合降振方法的减震效果研究  

Study on the vibration reduction effect of combined vibration reduction method of blasting vibration

作　　者：张袁娟[1] 刘梦珍 ZHANG Yuanjuan;LIU Mengzhen(College of Safety Engineering,Henan University of Engineering,Zhengzhou 451191,China)

机构地区：[1]河南工程学院资源与安全工程学院,河南郑州451191

出　　处：《河南工程学院学报（自然科学版）》2024年第1期21-24,共4页Journal of Henan University of Engineering：Natural Science Edition

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

摘　　要：为分析预裂爆破+减震沟组合降振方法的降振效果,首先运用LS-DYNA软件分别对单一预裂爆破和预裂爆破+减震沟组合降振方法进行数值模拟,得出预裂爆破+减震沟组合比单一预裂爆破降振效果更好,相差比例最大可达61%;然后进行爆破振动现场监测试验,论证了数值模拟结论的正确性;最后得出结论,认为预裂爆破+减震沟组合降振效果更好,降振方法的选取应结合地质条件、实际工况和周围被保护对象的要求进行综合分析。In order to analyze the vibration reduction effect of presplitting blasting+damping ditch combination vibration reduction method,LS-DYNA software is used to carry out numerical simulation of single presplitting blasting and presplitting blasting+damping ditch combination vibration reduction method respectively,and it is concluded that the presplitting blasting+damping ditch combination vibration reduction method is better than the single presplitting blasting vibration reduction effect,and the maximum difference ratio can reach 61%.Secondly,the blasting vibration field monitoring test is carried out to demonstrate the correctness of the conclusions drawn from the numerical simulation.Finally,it is concluded that the combination of presplitting blasting and damping ditch has better vibration reduction effect.The selection of vibration reduction measures should be comprehensively analyzed in combination with geological conditions,actual working conditions and the requirements of surrounding protected objects.

关 键 词：减震沟 预裂缝 LS-DYNA 数值模拟 

分 类 号：TD821[矿业工程—煤矿开采]