摘要
介绍了渗流井的结构和井流特征,通过引入等效渗透系数,构建"渗流—管流"耦合模型,建立了渗流井取水的数学模型。以陕西省神木县盘塘水源地为例,用地下水流三维有限差分法对水源地地下水允许开采量进行了计算。结果表明,盘塘水源地渗流井开采方式下,地下水允许开采量为92 400m3/d,枯水期允许开采量为56 200m3/d。通过对比不同取水方式下的允许开采量,认为渗流井取水方式较管井、辐射井等取水方式具有出水量大,易管理等优势。在干旱半干旱的地区,渗流井具有明显优于其他取水结构的特点。
After a brief introduction of the structure and flow characters of seepage wells, a mathematic model of coupled seepage and pipe flow is developed by adapting the equivalent hydraulic conductivity. By taking the Pantang water source region of Shenmu County as an example, the model is used to get allowable groundwa- ter yield by the 3-D finite difference method of groundwater flow. Results show that newly added allowable yield from seepage wells is 92 400 m3/d, and the newly added allowable yield in dry season is 56 200 m3/d. By al- lowable yields of different fetching water methods, seepage well is better than tube well and radial collector well, which is not only suitable for water yield, but also easy for management. In the arid and semiarid area, seepage well is much better than other fetching water methods.
出处
《水土保持通报》
CSCD
北大核心
2014年第3期190-194,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目"非管井集水建筑物取水机理的物理模拟及计算模型研究"(40972154)
关键词
渗流井
允许开采量
等效渗透系数
“渗流-管流”耦合模型
盘塘水源地
seepage well
allowable yield
equivalent hydraulic conductivity
coupled seepage and pipe flow model
Pantang water source region
