丽江某岩溶隧洞涌水量预测

Prediction and Research on Water Gushing of One Diversion Tunnel in Karst Area in Lijiang

从几种隧洞涌水量基本原理出发,介绍公式,参数,适用条件,选择合适的方法计算涌水量,给工程施工设计提供有效的参考依据。以丽江市某引水工程为例,为了对该地区岩溶隧洞涌水量进行预测,应用大气降水入渗系数法,地下水径流模数法,地下水动力学法。从岩溶地下水的赋存和运移特征出发,结合工程实际地质勘查特点,阐述了岩溶隧洞涌水量预测研究现状以及前述几种常用隧洞涌水量预测方法的特点,通过工程实例的检验,分别利用前两种方法所得结果相差不大,均有较大的意义。

Based on the basic principle of several kinds of tunnel water inflow,this paper introduces the formula,parameter and theapplicable conditions and selects the appropriate method to calculate water inrus,to provide effective reference for engineering design.Taking a water Gushing project in Lijiang city as an example,this paper introduces the atmospheric precipitation infiltration coefficientmethod,the runoff modulus method of groundwater and groundwater dynamic research method.Based on the characteristics of karstgroundwater occurrence and migration,combined with the characteristics of engineering geological prospecting,this paper expounds thecurrent research situation of the prediction of water inflow in karst tunnels and the characteristics of several commonly used methods forpredicting the water inflow.By means of engineering examples,the results obtained by the first two methods are not very different.