【摘要】 野外调查人员在进行崩塌落石灾害的风险分析和评价时,由于没有科学的判别依据,往往只能根据以往经验主观加以判断。本文在前人研究成果和野外调查资料分析的基础上,探讨了崩塌落石冲击力的计算方法,并运用LS-DYNA显式动力学分析软件建立了崩塌落石冲击荷载作用下埋地管道的三维有限元模型,进行了数值模拟,研究了某些因素对埋地管道安全的影响规律,得出一些具有实用性的曲线或公式,可供评价实际问题时查询应用,以为埋地管道的安全运营及崩塌落石的防护设计提供决策依据。更多还原

【Abstract】 When field investigation personnel investigate the risk analysis and evaluation of the collapse of rockfall disaster,there is no scientific basis for the discrimination,so the conclusion can only be based on the past experience.This paper,on the basis of field data and the results of previous studies,analyzes the calculation methods for rockfall impact,uses the explicit dynamic analysis software LS-DYNA to establish the corresponding three-dimensional finite element model,and carries out the numerical simulation.It also studies the influence law of certain factors on the safety of buried pipelines and makes some practical curves or formula so as to supply practical inquires and provide the decision-making information for the safe operation of buried pipelines and the protection of landslide rockfall.更多还原