夹岩水利工程深埋长隧洞开挖施工典型地质问题及处理技术

Typical geological problems and treatment techniques of deep and long tunnel excavation in Jiayan Hydraulic Engineering

夹岩水利工程中有多条深埋长隧洞处于地下水位线以下,开挖施工中经常需要穿越软岩、强岩溶等地质段。本文列举了施工中出现的涌水、涌泥、软岩等典型地质问题,整理分析了处理方案和处理技术,总结了方法和经验,可为类似地质条件工程施工提供借鉴。

There are several deep and long tunnels under the underground water level in Jiayan Hydraulic Engineering. It is necessary to pass across soft rock and strong karst geological sections in excavation construction. Several typical geological problems in construction are listed in the paper, such as water gushing, mud gushing, soft rock, etc. The treatment plans and treatment technologies are sorted out and analyzed. The treatment method and experience are summarized, which can be used for reference in engineering construction of similar geological conditions.