断层影响下的地下水流数值模拟  

Numerical Simulation of Groundwater under the Influence of Faults

作　　者：朱斌[1] 武强[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院

出　　处：《桂林工学院学报》2005年第1期31-35,共5页Journal of Guilin University of Technology

基　　金：教育部跨世纪优秀人才基金资助项目 (2000-16)

摘　　要：地下水流在有断层影响下呈现出不连续性和各向异性的特征, 使地下水流的数值模拟过程变得复杂. 通过对研究区分布的断层进行分析, 综合选取 23条断层作为内部边界输入计算模型中, 并用MODFLOW软件自身提供的墙体边界 (Wall) 模拟断层, 克服了有限差分方法对复杂边界条件模拟的缺陷. 计算表明, 研究区地下水受断层的影响显著, 断层将研究区分割成相互独立、水力联系较小的水文地质单元, 区内地下水水位周期性波动主要受大气降水的影响.Under the influence of faults, the groundwater flowing characteristics of disconuity and aniso-tropy make the process of groundwater numerical simulation more complex. Through analysis of faults located in study area, 23 faults are considered as inner boundaries in simulation model, and simulated these faults with the function of Wall Boundary offered by Visual MODFLOW. The results of an example indicate that the groundwater level in study area is influenced evidently by the existence of faults dividing the study area into geohydrologic units with less connection in hydraulic relationship , and the periodic fluctuation of groundwater level is mainly impacted by precipitation in study area.

关 键 词：断层 水文地质 地下水流数值模拟 VISUAL MODFLOW 淮北 

分 类 号：P641.2[天文地球—地质矿产勘探]