摘要
在新建重庆渝北至长寿扩能高速公路项目明月山隧道右线施工开挖过程中出现大型溶洞段,通过对溶洞段地质进行补充勘察和全过程水文长期观测,并根据该隧道溶洞形态及地质条件,充分考虑了结构安全、工程经济和施工可行性,采取加强结构设计等综合措施对溶洞段进行了处置。由施工过程的监测结果表明,该隧道此段溶洞得到了较好的处置,消除了安全风险,达到了预期效果。该溶洞处置方法及技术为新建、改扩建公路和城市轨道交通隧道溶洞处置提供参考。
During the excavation of the right line of Mingyue shan Tunnel in the new Chongqing Yubei-Changshou,expansion expressway project,a large karst cave section is found.In view of its shape and related geological conditions,the structural safety,engineering economy and construction feasibility,strengthened structural design,supplementary dynamic geological surveys,regular hydrological observation and the other methods have been taken.The results show that after aforesaid comprehensive treatment measures,the karst cave in this section tunnel has been better treated,the safety risk has been eliminated,and the expected effect has been achieved.The methods and technics applied in the karst caves provides references for the new and extension constructions in highways and urban rail transit tunnels.
作者
周谊一
周从伟
ZHOU Yiyi;ZHOU Congwei(Xinjiang BeixinRoad&Bridge Group Co.Ltd.,Xinjiang 830026,China;Chongqing Beixin Rongjian Engineering Construction Co.Ltd.,Chongqing 404700,China)
出处
《宁夏工程技术》
CAS
2020年第4期327-330,共4页
Ningxia Engineering Technology
关键词
高速公路
隧道溶洞处置
安全
expressway
tunnel karst cave treatment
safety
