摘要
在大规模现场试验及分析基础上，研究了黄土塬区域城市地表水下渗能力、对工程地质及地下水污染的影响问题．结果表明，黄土对地表水有较强的下渗能力，采用0．3～0．5m／d的稳渗率作为下渗工程设计参数是比较合理的．湿陷性黄土层厚达20m左右，各类建筑与新建下渗水池之间的距离不得小于60m．黄土塬地表水下渗的规律是以垂直裂隙下渗为主，水平方向下渗量很小，且为不均匀下渗．为保护地下水，雨水可以下渗，污水严禁下渗．为黄土塬区域城市水土保持提供了理论参考．
On the basis of the full-scale test and analysis, studied the loess plateau city surface water submarine infiltrate process capabilities, engineering geology and groundwater pollution influence problems. The result indicated that, the loess has stronger under infiltrate ability to the surface water, the introduction of the steadily infiltrating rate 0. 3～0. 5 m/d works as a filter design parameters are more reasonable. The thickness of wet natural yellow soil layer is reach to 20 m, the distance between building and newly builted under infiltrates shall not less than 60m. The rule of the surface water permeates on the loess plateau primarily is vertical crevasse under infiltration. The horizontal direction infiltrates quantity is very small, and non-uniformity under. In order to protect the ground water, the rain water can be infiltrated under, the sewage is strictly prohibited infiltrating. Has provided the theory reference for the loess plateau region city conservation of water and soil.
出处
《甘肃科学学报》
2006年第3期106-110,共5页
Journal of Gansu Sciences
基金
甘肃省科研攻关项目(JK1998-13)
(JK2003-17)
关键词
黄土塬
地表水
下渗
水土保持
loess plateau
surface water
permeation
resources utilization
