岩溶含水介质管道-裂隙水流交换物理模拟试验研究

Conduit-fissure media is the main water reposition and conductor channel in karst areas of Southwest China. Now, most experiments and methods have not been able to give accurate parameters of conduit-fissure water-exchange. In this project, taking conduit-fissure water as the research object, we aim to develop the conduit-fissure water exchange physical model. We will design a series of experiment study on karst conduit-fissure water exchange using orthogonal analysis method. Water exchange process of groundwater flow between the pipes and fissure will be simulated. Main factors of karst pipe conflux and head loss along the way of fissure will be analysed employing Drift Theory, Dominant Flow Theory, Interface Dynamics Theory and ultivariate statistical analysis. We will study on the transformation law of Darcy flow and non Darcy flow, calculate the exchange parameters of conduit-fissure. The results can provide some parameters and scientific basis for karst area water resources evaluation and simulation in karst areas of Southwest China.

管道-裂隙介质是西南岩溶区的主要储水空间和导水通道，目前绝大多数实验和方法均未能给出管道-裂隙水流交换准确参数。本项目以管道-裂隙水流为研究对象，研制管道-裂隙水流交换物理模型，采用正交分析法设计岩溶管道-裂隙水流交换的室内模拟试验，模拟地下水流在岩溶裂隙和岩溶管道间的水流交换的多相介质动力学过程，利用偏流理论、优势流理论、界面动力学、多元统计等方法，分析不同条件下管道汇流量、裂隙沿程水头损失的影响因素，探讨达西流与非达西流转化规律，求取管道-裂隙交换参数。研究成果可为西南岩溶区水资源评价和模拟提供参数和科学依据。

管道-裂隙介质是西南岩溶区的主要储水空间和导水通道，目前绝大多数实验和方法均未能给出管道-裂隙水流交换准确参数。本项目以管道-裂隙水流为研究对象，研制管道-裂隙水流交换物理模型，采用正交分析法设计岩溶管道-裂隙水流交换的室内模拟试验，模拟地下水流在岩溶裂隙和岩溶管道间的水流交换的多相介质动力学过程，利用偏流理论、优势流理论、界面动力学、多元统计等方法，分析不同条件下管道汇流量、裂隙沿程水头损失的影响因素，探讨达西流与非达西流转化规律，求取管道-裂隙交换参数。研究成果可为西南岩溶区水资源评价和模拟提供参数和科学依据。