陕北南梁白豹地区地下水合理开发利用方式研究

Rational groundwater exploitation and utilization manner in the Nanliang-Baibao area, northern Shaanxi

建立地下水的合理开发利用模式,对能源基地建设及缓解其水资源紧缺状况十分重要。在分析南梁白豹地区的地下水开采条件的基础上,选择了典型地区建立了三维地下水流概念模型和数值模型。通过模拟计算不同单井开采量、不同井间距开采方案作用下的降落漏斗形态,对该区内地下水资源的合理开发利用方式进行了分析研究,结果表明,在该区内地下水开采井应布设在较大的河谷区,以线状井排方式开采,以截取河流排泄量为开采量,地下水线状开采强度以不超过(0.02～0.03)×104m3/(d·km)为宜。

Establishing a rational model of groundwater exploitation and utilization is very important for the construction of an energy base and mitigating its urgent shortage of water resources. Based on an analysis of the conditions of groundwater in the Nanliang- Baibao area, a 3D groundwater flow conceptual model and a numerical model are constructed in a selected typical area. By modeling the shape of the drawdown cone using different exploitation scenarios with different single well yields and different well spacings, the manner of rational groundwater exploitation and utilization is studied. The analytical results indicate that the groundwater pumping wells should be laid out in the main fiver valley and that the linear well array should be used to intercept the river discharge as the yield. It is advisable that the linear pumping rate should not exeed （0.02-0.03）×10^4 m^3/（d·km）.