超前地质预报在方斗山隧道施工中的应用

方斗山隧道通过地段岩溶发育、水流量大、断层破碎带多且还有煤层、瓦斯，地质条件极其复杂。隧道施工在不同的地质段需要采取不同的施工方案和措施，因此超前地质预报在施工中占有重要的位置。本文对方斗山隧道超前预报的必要性，预报的手段和工作原理进行了阐述，并提出了一些在预报中应注意和解决的问题。

Application of Advance Geological Forecasting in Construction of Fangdoushan Tunnel

Due to the developed karsts, large water inflow rate, frequent crushed zones, as well as coal seams and gases in the ground through which Fangdoushan tunnel passes, the geological condition of the tunnel is very complex. During tunnel construction, different construct schemes and measures will be taken in different geological sections. Therefore, advance geological forecasting plays a very important role in tunnel construction. This article expatiates on the necessity of performing advance geological forecasting in the construction of Fangdoushan tunnel, describes the prediction measures and the working principles of the adopted geological forecast systems and provides some issues to which more attention should be paid during geological forecasting.