基于MODFLOW的岩溶管道水流模拟方法探讨与应用

针对岩溶管道水流特征,选取广西寨底岩溶流域为研究对象,分别采用三维有限差分地下水流动模型（MODFLOW）中的Drain和River模块概化模拟岩溶管道特征,结合管道内上游、中游及下游三个观测孔对比分析两种方法的适用性,结果表明：末期等水位线图中位于管道两侧处流线均有形状突变,符合实际管道水流动态特征,且能模拟出管道内水位变化趋势。最后分析两种方法模拟管道水流的原理,Drain模块中岩溶管道仅起排水作用,不允许管道内水流流向周围含水层,而River模块允许岩溶管道水与周围含水层水流交换,因而相对Drain模块而言,应用River模块概化模拟岩溶管道更加精确。...

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Bibliographic Details
Published in中国岩溶 Vol. 36; no. 3; pp. 346 - 351
Main Author 赵良杰 夏日元 杨杨 邵景力 易连兴 王喆
Format Journal Article
LanguageChinese
Published 中国地质大学(北京)水资源与环境学院,北京100083 2017
中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室,广西桂林541004%中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室,广西桂林,541004%中国地质大学(北京)水资源与环境学院,北京,100083
Subjects
MODFLOW
岩溶含水层
数值模拟
管道水流
岩溶含水层
管道水流
conduit flow
数值模拟
MODFLOW
karst aquifer
numerical simulation
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Summary:针对岩溶管道水流特征,选取广西寨底岩溶流域为研究对象,分别采用三维有限差分地下水流动模型（MODFLOW）中的Drain和River模块概化模拟岩溶管道特征,结合管道内上游、中游及下游三个观测孔对比分析两种方法的适用性,结果表明：末期等水位线图中位于管道两侧处流线均有形状突变,符合实际管道水流动态特征,且能模拟出管道内水位变化趋势。最后分析两种方法模拟管道水流的原理,Drain模块中岩溶管道仅起排水作用,不允许管道内水流流向周围含水层,而River模块允许岩溶管道水与周围含水层水流交换,因而相对Drain模块而言,应用River模块概化模拟岩溶管道更加精确。
Bibliography:ZHAO Liangjie1,2 , XIA Riyuan2 , YANG Yang2 , SHAO Jingli1 , YI Lianxing2 , WANG Zhe2 （1. School of Water Resources and Environment, China University of Geosciences （Beijing）, Beijing 100083,China; 2. Institute of Karst Geology, CAGS/Key Laboratory of Karst Dynamics, MLR＆GZAR,Guilin, Guangxi 541004,China）
45-1157/P
The Zhaidi karst underground river system is located in Guangxi of southwest China and is a typical karst spring catchment with a mean annual discharge of around 1.62 m~3/s.The catchment area is about 31.05km~2,with altitudes ranging from 190m to 820m a.s.l,and is developed mainly in the Devonian limestones with the landform type of karst peak-cluster depression.Precipitation mainly takes place in spring and summer and mean annual precipitation recorded from 1971 to 2000is about 1,601.1 mm.The Zhaidi karst underground river system is characterized by extremely anisotropic fractured carbonate rocks and well interconnected karst conduits.There are eight karst underground river sub-systems and many sky-
ISSN:1001-4810
DOI:10.11932/karst20170308