摘要
在复杂岩溶介质中,由于岩溶形态存在小尺度的溶缝到大尺度的岩溶管道的变化,岩溶地下水流呈现为层流-紊流多种流态共存的复杂系统。对含水层中岩溶管道的准确概化是精确模拟复杂岩溶介质地下水流动的前提。在较为成熟的三维有限差分地下水流动模型(等效多孔介质)条件下寻找一种概化岩溶管道的方法,基于Modflow地下水流动模型,分别讨论模型软件中的单元渗流计算子模块(BCF)、排水沟子模块(DRN)、河流子模块(RIV)以及溪流子模块(STR)对岩溶管道的概化模拟效果,发现河流子模块(RIV)与溪流子模块(STR)是概化岩溶管道的最优模块。
Because of complicated karst media variations, from karst cracks to karst conduits, the karst groundwater currents form a complicated groundwater system, in which laminar flows and turbulent flows coexist. As accurate karst conduit generalization is the premise of precise simulation of groundwater currents, the paper makes a study on karst conduits generalization method based on the relative sophisticated 3D finite-difference groundwater flow model. Based on Modflow groundwater flow model, the paper anaylzes the effect of BCF, DRN, RIV and STR in generalization and simulation, and the result indicates that RIV and STR are the optimal sub-module for karst conduit generalization and simulation.
出处
《地下水》
2014年第1期53-55,78,共4页
Ground water
关键词
岩溶管道
模型概化
子模块
Modflow
Modflow
karst conduit
model generalization
submodule
