摘要
基于"新奥法"的基本原理,结合地质条件分析,归纳出山岭隧道4种常见的塌方模型。根据施工过程中塌方的成因及形态,分为2类,即承载拱塌方、松散体塌方,给出了相应的处理原则。以某工程隧道塌方治理为案例,按"稳固后方、超前注浆、分步开挖、加强支护"的原则,顺利通过塌方段。
Based on the principle of New Austrian Tunneling Method and in combination with analysis on the geological conditions, four models of collapse often occurring in mountain tunnel are concluded. According to causes and types of collapses during construction, collapses are classified two types： bearing arch collapse and loose mass collapse. Accordingly, corresponding treatment principles are proposed. With case of the collapse treatment in one tunnel, the principles of reinforcing the tunneled section, grouting in advance, excavating in step and strengthening support are followed so that the collapse sections are passed over.
出处
《西北水电》
2016年第6期17-21,共5页
Northwest Hydropower
关键词
隧道
新奥法
塌方模型
承载环塌方
松散体塌方
tunnel
New Austrian Tunneling Method
collapse model
bearing ring collapse
loose mass collapse
