辐射井取水方式数值模拟方法  

Numerical Simulation Approach of Radial Collector Well

作　　者：陈鹏[1] 王玮[2] 

机构地区：[1]四川省地质工程勘察院,四川成都610072 [2]长安大学环境科学与工程学院,陕西西安710054

出　　处：《人民黄河》2013年第4期48-50,共3页Yellow River

摘　　要：简要分析了辐射井的井流特征,将辐射井的井管刻画为由一系列离散的管道和节点组成的井管,以辐射井井管与所在含水层之间的交换量作为耦合点,将离散的井管和有限差分网格耦合起来,建立辐射井取水计算模型。以陕西府谷墙头水源地为例,通过水文地质条件分析,提出黄河墙头段河谷区地下水辐射井开采方式。结合具体的水文地质结构及有关参数,利用已建立的辐射井取水的渗流-管流耦合模型计算了各方案下各个辐射井的出水量,最终确定了辐射井的允许开采量。This article analyzed the flow characteristics of radial collector well. The well pipe system was conceptualized as a discrete conduit net- work which consisted of pipes and nodes. Using the exchange flow rate between the aquifer and the well pipe as the couple key, the discrete well pipe and the finite difference grid were coupled and the modified calculation model of radial collector well was set up. Through the analysis of the hydrogeological conditions, the manner of radial collector well was proposed to develop groundwater in the river valley of Qiangtou in Shaanxi. Com- bining the specific hydrogeological structure and related parameters, the pumpage of each radial collector well was calculated by a three-dimensional finite difference method. The newly added reasonable yield was also proposed.

关 键 词：地下水开采 辐射井 渗流-管流耦合模型 交换量 允许开采量 

分 类 号：TV213[水利工程—水文学及水资源]