云南省某岩溶隧洞涌水量预测

Forecast of karst water bursting in one rock dissolving tunnel of Yunnan Province

云南省牛栏江-滇池补水工程大五山隧洞6号支洞在施工过程中排水量持续不减,影响施工进度。为指导下步施工工作,选用Q-S曲线法、比拟法和大井法三种方法对支洞涌水量进行了预测,结果分别为25 088,17 580,24 528 m3/d。经对比,水文地质比拟法误差最小,与隧洞施工开挖实况吻合较好,涌水量计算结果可直接指导施工。

The water discharge continues unabating in the construction of Niulanjiang - Dianchi replen- ishment project of Tunnel 6 in Yunnan Province , witch affects the construction progress. In order to guide the next construction work,the Q -s curve method,hydro- geological analogue method and Dajing meth- od were chosen to predict water inflow. The forecast results of three method are 25088,17580,24528 cu- bic meters per day respectively. By contrast, The minimum error is hydro - geological analogy method that accords with actual tunnel construction excavation. The calculation results of karst water bursting can di- rectly guide the construction.