超前预测预报在笔架山隧道施工中的应用

Application of advanced prediction and forecast in Bijiashan Tunnel construction

由于地质条件的复杂性,隧道施工中难免会遇到诸如岩溶突水、岩爆、围岩大变形、塌方等地质灾害问题。超前预测预报技术作为隧道勘察结果的进一步认识和补充,在隧道施工减灾、防灾方面发挥着重要的作用。以笔架山隧道为例子,针对该隧道复杂的地质条件,采用工程地质方法和物探方法相结合,以隧道内地质观测分析与设备测试相结合的超前预测预报技术,成功地预报了掌子面前方的地质信息,有效地指导了该隧道的安全施工。

As geologic condition is complex, it is unavoidable to encounter with some geologic hazards such as karst water gushing, rockburst, surrounding rock high deformation or collapse. The prediction and forecast technique as the further realization and supplement of tunnel prospect is important to subtract and prevent hazard. The thesis cites Bijiashan Tunnel, as geologic term is complicated in the tunnel, various advanced prediction and forecast methods, which include engineering geology and geophysics technique, geology observation and analysis and equipment test, are used to forecast the geologic information in tunnel facing frontage; the forecast results are successful and guide the tunnel construction safety effectively.