摘要
本文依托成昆铁路营盘山高地应力软岩隧道,阐述了进行隧道围岩地应力的测试和变形分级及分析变形原因,并根据围岩分级及变形原理,对支护措施进行创新,采用超前导洞释放地应力,综合运用柔性及刚性支护,分级支护,加强监控量测等多种技术措施,有效控制围岩变形,避免施工及运营期间初支、二衬被破坏,确保了隧道施工质量及安全运营。
Based on the high ground stress soft rock tunnel of Chengdu-Kunming railway,this paper expounds the in-situ stress test and deformation classification of tunnel surrounding rock and analyzes the causes of deformation.According to the classification and deformation principle of surrounding rock,the supporting measures are innovated.The ground stress is released by super pilot tunnel,and various technical measures such as flexible and rigid support,graded support and strengthened monitoring and measurement are comprehensively used to effectively control the deformation of surrounding rock,avoid the destruction of initial support and secondary lining during construction and operation,and ensure the construction quality and safe operation of tunnel.
作者
姜元龙
JIANG Yuan-long(The 3rd Engineering Co.,Ltd.of China Railway 12th Bureau Group,Taiyuan 030000,China)
出处
《价值工程》
2021年第3期121-123,共3页
Value Engineering
关键词
铁路隧道
高地应力
软岩
变形
技术措施
监控量测
railway tunnel
high ground stress
soft rock
deformation
technical measures
monitoring and measurement
