专项水文地质勘察在山岭高速公路隧道中的应用

隧道涌水是隧道工程地质中的一个复杂问题，如未能查明隧道区水文地质条件，当隧道施工时，则可能出现隧道涌水、流土和围岩失稳等问题，导致施工困难、施工人员人身安全受到严重威胁、以及设计变更、工程造价增高等等问题。文中以二广高速某隧道为例，通过隧道区的专项水文地质勘察，对隧道的水文地质条件进行了分析，通过水文地质试验计算所需参数，并进行涌水量的预测，为隧道工程的设计、造价及施工安全提供依据。计算结果和施工中实测结果对比表明，本文推荐的计算方法合理、结果准确。

The Analysis and Parameters Calculation of Hydrogeology of a Tunnel on Erguang Highway

The tunnel gushing is one of the most complex problems in tunnel engineering geology. If the tunnel hydrogeology conditions are not clear, some problems, such as tunnel gushing, soil flow, surrounding rock instability, etc., may occur when the tunnel is being constructed, which consequently increases construction process difficulty, workers＇ safety threats s, the construction cost and the change of design. This paper, taking one tunnel on the Er＇ guang Highway as subject, surveys and analyzes the hydrogeology conditions, calculates the needed parameters, and predicts the inflow of water, then provides some references for the design, construction cost and construction safety. As the calculated data is in accordance with the measurement, it verifies that the calculation method in this paper is accurate and reasonable.