摘要
高海拔地区隧道一般具有埋深较大、地质构造活跃、地应力高等特点,隧道开挖后极容易发生岩爆现象,造成人员伤亡和机械损失,给施工带来不利。针对桑珠岭隧道的岩爆特征,依据初始应力场,对岩爆从总体、分阶段、初始应力场二次反演等方面进行预测,根据预测结果,提前采取系列技术措施,有效地降低了岩爆发生概率、破坏程度和施工风险,确保了施工安全。
The tunnels in high altitude area are generally deeply buried with active geological structures and high ground stress,and the occurrence of rock burst happens easily after the excavation of the tunnel,which is very likely to cause personal injury and mechanical damage and will adversely affect the safety construction. In view of the rock burst characteristics of Sangzhuling tunnel and based on the initial stress field,the rock burst is predicted totally,by stages and by quadratic inversion of initial stress field. A series of technical measures are adopted in advance to effectively reduce the rock burst probability,damage degree and constriuction risks,and the construction safety is ensured.
作者
朱胥仁
彭学军
胡从文
彭雨杨
李一萍
Zhu Xuren;Peng Xuejun;Hu Congwen;Peng Yuyang;Li Yiping(China Railway No.5 Bureau Group,First Engineering Co.,Ltd.,Changsha 410117;School of Civil Engineeringy Central South University,Changsha 410000)
出处
《工程建设》
2019年第11期57-61,共5页
Engineering Construction
基金
湖南省工程建设行业科学技术创新研究计划项目
关键词
隧道
高海拔
施工
岩爆
预报
安全措施
tunnel
high altitude
construction
rock burst
prediction
safety measures