爆炸荷载作用下路堑边坡稳定性分析  

Analysis of Cut Slope Stability Under the Influence of Blasting

作　　者：陈宁宁[1] 高文学[1] 周世生[2] 张力军[2] 侯炳晖[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京市公路桥梁建设集团有限公司,北京100068

出　　处：《施工技术》2013年第13期64-67,共4页Construction Technology

基　　金：北京市公路桥梁建设集团有限公司科技开发项目

摘　　要：在爆破过程中,对路堑边坡振动情况进行监测,并分析监测波形数据,有助于掌握爆破地震波的强度和频谱结构,了解其传播和衰减规律,推测爆破振动对路堑边坡岩体的损伤程度和边坡稳定性的影响,并检验爆破设计方案的合理性。结合工程实际情况,建立了爆炸荷载作用下路堑边坡动力响应的有限元分析模型,探讨了边坡岩体内应力场、位移场以及爆破地震波的传播规律。分析了边坡动力稳定的安全评价标准,结合爆破振动监测,分析了爆破开挖对路堑边坡稳定性的影响。In the demolition process,monitoring of cut slope vibration and analysis of monitoring waveform data are helpful to grasp the strength of the blasting seismic waves and the structure of spectrum,understand their propagation and attenuation rule,speculate blasting vibration on the cut slope rock mass damage degree and the influence of slope stability,and examine the rationality of the blasting design scheme.Based on engineering practice,this paper establishes the finite element analysis model under the blasting load,discusses slope rock mass,the stress,displacement field and the propagation law of blasting seismic waves,analyzes the dynamic stability of slope safety assessment standards.Combining with the blasting vibration monitoring,this paper analyzes cut slope stability influence under the blasting excavation.

关 键 词：路堑边坡 爆破 稳定性 数值模拟 监测 

分 类 号：U416.13[交通运输工程—道路与铁道工程]