安全与环境工程2025，Vol.32Issue(5)：209-219,11.DOI:10.13578/j.cnki.issn.1671-1556.20240916
基于GMS的岩溶隧道涌水量预测
Prediction of water inrush in a karst tunnel based on GMS
摘要
Abstract
Tunneling in karst areas is of great significance to modern transportation and water conservancy construction.Complex hydrogeological conditions and tunnel water inrush and their secondary hazards bring great challenges to the construction of deep and long tunnels in karst regions.This study relies on a highway project in Hubei Province to analyze the engineering and hydrogeological conditions of the karst tunnel site,and to identify the development characteristics of the groundwater flow system and its recharge,runoff and discharge modes.GMS(groundwater modeling system)software was used to construct a three-dimensional geological model of the tunnel site area,and the Drain module was used to simulate the three-dimensional groundwater flow model of the tunnel site after complete excavation of the tunnel.In this study,the tunnel was segmented based on the classification of the surrounding rock levels,and the maximum water inflow was predicted after the tunnel was fully excavated and the surrounding water flow system was basically stabilized.At the same time,the prediction results were compared with those of the atmospheric rainfall infiltration method and the underground runoff modeling method.The results show that the maximum water influx predicted by the numerical simulation method,the atmospheric rainfall infiltration method and the modulus of underground runoff method are 5 044,6 337 and 4 270 m3/d,respectively;among them,the maximum water influx predicted by the atmospheric rainfall infiltration method is the largest,and that by the numerical simulation method is in the middle of the maximum water influx predicted by the modulus of underground runoff method and the atmospheric rainfall infiltration method.The maximum water influx predicted by the numerical simulation method is in the area where Yawugou and Baiyu'an Reservoir are located,with a maximum water influx of 1 239 m3/d.The main reason for the large water influx in this area is that the tunnel excavation releases the stress in the aquifer,which results in the increase of the hydraulic gradient between the surface water and the tunnel,and the recharging of aquifer by the surface water in the area.During the period from tunnel excavation to the basic stabilization of the water flow system,the amount of water recharged to the aquifer by Baiyu'an Reservoir is 748 m3/d,and the amount of water recharged to the aquifer by Yawugou Diversion Tunnel is 13 m3/d.The results of the present study provide an important hydrogeological basis for the construction and safe operation of tunnels,and at the same time provide a theoretical model for the prediction of tunnel influx in the karst area,which can better guide the actual tunnel influx by analyzing the difference between different methods and providing a better guide for the prediction of tunnel influx.By analyzing the differences between different methods,it can better guide the prediction of water influx in actual tunnels.关键词
岩溶隧道/涌水量预测/高速公路/数值模拟/地下水模拟系统(GMS)Key words
karst tunnel/water inrush prediction/highway/numerical simulation/groundwater modeling system(GMS)分类
资源环境引用本文复制引用
陈风光,何恩洋,段建新,孟中华,赵英凡,王全荣..基于GMS的岩溶隧道涌水量预测[J].安全与环境工程,2025,32(5):209-219,11.基金项目
武汉经开区"车谷产业领军人才"资助项目(RP2024046587) （RP2024046587）
