某隧道区域地下水系统分析及涌水量预测

Analysis on Underground Water System in A Tunnel Area and the Prediction of Water Inflow

在碳酸盐岩广泛分布的西南地区,穿越碳酸盐岩地层的隧道,大多数都曾遭遇不同程度的岩溶突水、突泥灾害。在资料搜集与整理的基础上,通过水文地质分析方法,重点研究了某隧道水文地质条件,包括地层含水岩组的划分、岩溶水的补、径、排条件及岩溶发育规律,并划分成了两个一级地下水系统;预测了隧道在断层F5处的涌水量,施工时应备有涌水应急预案。

In the southwest where carbonate rock is widely distributed, most of the tunnels which go through the carbonate rock stratum are subject to karst water burst and mud breakout to a varying extent. Based on data collection and sorting, this paper, by hydrogeological analysis, laid the stress on the study of hydrological conditions of the tunnel, including the division of aquifer group in the stratum, the supply, runoff, discharge conditions of the karst water, and the development law of the karst, and classified into two first-grade underground water system; as well as predicted the water inflow in the tunnel at the Fault F5. In the construction, the emergency plan for water inflow should be available.