缓倾岩层隧道施工风险评估研究  

Study on Risk Analysis of Tunneling in Slight Inclined Stratum Rock

作　　者：沈红云[1] 杜建华[2] 黄黆[3] 

机构地区：[1]河北交通职业技术学院,石家庄050035 [2]石家庄铁路职业技术学院,石家庄050041 [3]西南交通大学土木工程学院,成都610031

出　　处：《铁道标准设计》2017年第8期134-140,共7页Railway Standard Design

基　　金：教育部重点实验室课题(2011KF4);铁道部科技研究开发计划项目(2010G016-H);国家自然科学基金青年科学基金项目(51208437)

摘　　要：基于熵法、模糊综合评价法,并结合离散元数值模拟方法,对缓倾岩层隧道的施工风险评价与对策进行研究。通过回顾相关文献,建立针对缓倾岩层隧道的施工风险评价指标体系,将熵法和模糊综合评价法运用到风险评价中,结合离散元数值模拟软件3DEC判断围岩及支护系统的稳定性,为风险评估提供依据。根据风险评估结果提出相应的风险规避对策。实践表明,针对缓倾岩层隧道建立的指标体系和评估方法,结合定量数值模型分析,有效提高评估施工风险的可靠程度与支护设计的针对性及有效性,以期减少安全事故。Based on entropy weight method and comprehensive evaluation method and in combination with discrete element method,this paper conducts the study on risk analysis and strategy-making for tunnels in slight inclined stratum. According to literature review,a risk evaluation index system for tunnels in slight inclined stratum is developed. In the analysis,entropy weight method and comprehensive evaluation method are used together. Based on the results,discrete element numerical simulation software3 DEC is employed to study the stability of rock mass and support system. According to risk evaluation results,corresponding risk prevention measures are proposed. The practices show that the newly established index system and the evaluation method together with the numerical simulation analysis could efficiently assess the risk of construction and the pertinence and effectiveness of the support system,thus to reduce safety accidents.

关 键 词：缓倾岩层隧道 风险指标体系 风险评价 定量评价 数值模拟 

分 类 号：U451[建筑科学—桥梁与隧道工程]