渝怀线武隆隧道岩溶涌水量计算新方法  

New Calculation Method of Water Inflow Quantity in Wulong Tunnel on Chongqing—Huaihua Railway

作　　者：李苍松[1] 何发亮[2] 陈成宗[2] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]中铁西南科学研究院,四川成都610031

出　　处：《中国铁道科学》2005年第5期41-46,共6页China Railway Science

基　　金：铁道部科技发展计划项目(2001G009)

摘　　要：以三重空隙介质理论和化学动力学水文地质理论为基础,根据武隆隧道的岩溶水文地质条件,将岩溶含水介质空隙分为三种基本类型,提出折算渗透系数KL的概念,并根据变通后的达西公式将三种空隙介质中存在的不同流态耦合于达西—非达西流控制方程,提出一种新的岩溶隧道涌水量计算方法。利用该方法进行隧道岩溶涌水量计算主要有两大优点:一是可进行分段隧道岩溶涌水量计算;二是计算中最关键的参数折算渗透系数KL容易获取。On the basis of the triple Karst pore media theory and chemi-dynamics hydrogeology theory, according to the special Karst hydrogeology condition of Wulong Tunnel, 3 basic kinds of pores in Karst water pore media are classified. The concept of KL （equivalent hydraulic conductivity） is put forward. Different dynamic states of 3 different pore media are coupled in one adapted Daxi-non Daxi governing equation. A new method for calculating water inflow in Karst tunnel is proposed. This method has 2 great advantages in calculating water inflow in Karst tunnels. One is that water inflow in Karst tunnel can be calculated for each section. Another is that the most crucial parameter in calculation, equivalent hydraulic conductivity KL can be obtained easily.

关 键 词：隧道 岩溶 涌水量 三重空隙介质 化学动力学水文地质 

分 类 号：U456.32[建筑科学—桥梁与隧道工程]