隧道填土技术和试验方法

Tunnel filling technology and test method

针对隧道填土承载力低、湿陷性差的问题,研究采用现场实验的方法,通过分析重庆轨道交通10号线中央公园至中央公园西站填土隧道围岩的压力,以及支护结构的内力特性和荷载分布规律,对隧道围岩和支护结构安全性进行评估,并将其安全性能反馈给隧道填土设计与施工,为隧道填土施工方法和其支护结构体系提供了一套科学合理的理论体系,也为类似的工程项目提供了参考依据,具有一定的实际工程应用价值。

Focusing on the problems of low bearing capacity and poor collapsibility of filling soil in tunnel,the safety of tunnel surrounding rock and supporting structure is evaluated by field test method through analyzing the pressure of surrounding rock,internal force characteristics and load distribution law of supporting structure in filling tunnel from Central Park to Central Park West Station of Chongqing railway Line 10,while its safety performance is fed back to the design and construction of tunnel filling,which provides a set of scientific and reasonable theoretical system for the construction method of tunnel filling and its supporting structure system,and also provides a reference for similar projects,which has a certain practical engineering application value.