渗流-管流耦合模型及其应用综述  

A review of the seepage-pipe coupling model and its application

作　　者：陈崇希[1] 胡立堂[2] 

机构地区：[1]中国地质大学武汉环境地质研究所,武汉430074 [2]北京师范大学水科学研究院教育部水沙科学重点实验室,北京100875

出　　处：《水文地质工程地质》2008年第3期70-75,共6页Hydrogeology & Engineering Geology

基　　金：国家自然科学基金项目(40542011,40172085,49872081,49272144)

摘　　要：含水层-井孔水流问题是水文地质学中最重要的基础性研究课题之一。长期以来水文地质模型中对井孔的刻画基本上都是引用"热传导"中的"线汇"理论,需要人工预先给定线汇的流量或水头分配,其普适性至今没有得到证明。针对地下水混合井流模拟提出的"渗流-管流耦合模型"和"等效渗透系数"的概念、方法,不仅解决了混合抽水试验求取分层水文地质参数、预测分层地下水降落漏斗等问题,更重要的是提出的模型和方法具有一定的通用性,已被用于模拟水平井、自流井、观测孔等,并发展为岩溶管道-裂隙-孔隙三重空隙介质地下水流模型。"渗流-管流耦合模型"和"等效渗透系数"方法不仅得到现场试验的应用性验证,也通过物理模拟得到了检验。The description of well-aquifer system is one of the most important and fundamental problems in hydrogeological sciences. In the past years, numerous hydrogeological modelers used “line-sink” of “heat conduction” to describe a well .. In order to do so, one needs to determine the discharge or head distribution of the linear sink/source in advance. Up to now, the validity and applicability of such a description is not proved rigorously. Chen in 1992 presented the concept and theory of a “Seepage-pipe Coupling Model” and “Equivalent Conductive Coefficient”, which solved the problem of obtaining the multi-layered hydrogeological parameters and could predict the drawdown of multi-layered geological structures in mixed pumping tests. This model was suitable to simulate horizontal wells, artesian wells, mixed observation wells and so on, and was gradually developed to a groundwater flow model with triple media of karstic tube-fissure-pore. This method was validated by in-situ tests and several case studies, and was also verified by experimental simulation.

关 键 词：渗流-管流耦合模型 等效渗透系数 数值模拟 混合观测孔 水平井 自流井 岩溶管道 三重空隙介质 

分 类 号：P641.2[天文地球—地质矿产勘探]