摘要
岩爆预测研究对于地下工程的建设发展具有重要意义。以浙江省某深埋特长公路隧道为例,在隧址区地质调查的基础上,结合现场地应力实测数据及室内试验,通过数值模拟对典型标段隧道开挖后的二次应力场进行分析,同时根据岩石强度理论判据法及微震监测方法,对该标段可能发生的岩爆灾害进行综合预测分析,分析结果可为隧道的设计优化及顺利建设提供依据。同时,由于岩爆灾害的发生受多种因素影响,单纯通过理论判据进行预测仍具有不确定性,因此仍需在施工过程中针对存在岩爆灾害风险的标段加强现场监测。
Rockburst prediction is of great importance in the construction and development of underground engineering.Taking a deep-buried extra-long highway tunnel in Zhejiang Province as an example,based on the geological survey of the tunnel site area,combined with the in-situ geostress data and indoor tests,the secondary stress field after the excavation of a typical tender tunnel is analyzed through numerical simulation.At the same time,according to the rock strength theory criterion method and microseismic monitoring method,comprehensive prediction and analysis of possible rock burst disasters in the bidding section are performed.The analysis results provide a basis for the design optimization and smooth construction of the tunnel.At the same time,because the occurrence of rock-burst disasters is affected by many factors,it is still uncertain to predict only by theoretical criteria.Therefore,it is still necessary to strengthen on-site monitoring in the construction process for the sections where the risk of rock burst disasters exists.
作者
徐建达
朱建才
唐中华
徐志敏
宋金龙
陈韩鑫
XU Jian-da;ZHU Jian-cai;TANG Zhong-hua;XU Zhi-min;SONG Jin-long;CHEN Han-xin(Hangzhou City Highway Co.Ltd.,Hangzhou 310024,China;Architectural Design and Research Institute of Zhejiang University,Hangzhou 310012,China)
出处
《地基处理》
2020年第1期53-57,共5页
Journal of Ground Improvement
关键词
岩爆
公路隧道
理论判据
微震监测
rockburst
highway tunnel
theoretical criteria
microseismic monitoring
作者简介
徐建达(1967-),男,正高级工程师,注册咨询(投资)工程师,长期从事髙速公路建设的管理及科研工作。E-mail:1971969251@qq.com。
