摘要
陕西泾阳南塬塬边黄土滑坡频繁发生，造成的经济损失和人员伤亡极为惨重。本文讨论了区内黄土滑坡灾害形成的地貌地形及地质环境特征，着重分析了人类不合理的引用地表水灌溉，改变了地下水文条件，从而降低了土体的抗剪强度，导致黄土滑坡形成的过程和机制。通过研究认为，合理进行灌溉，控制地下水位是改善塬边地质环境和防治滑坡灾害的关键措施。
In the Southern Tableland (Nanyuan)of Jingyang County,Shaanxi Province,the loess landslides often occur along the slope of the tableland,causing heavy casualties and serious economic losses.Landslides are not only produced by natural factors,such as tectonics,geomorphology, and climate,etc. but also by human activities. According to field investigations,the channeled surface water into fields is a dominant factor for loess landslides in this area.The groundwater table is rising with the expansion of irrigated area and the increase of irrigated water, so the pressure head of the s ope of the tableland greatly increases,the shearing strength of loess much decreases,wi h accelerating formation of landslides.Therefore, the rational irrigation and the control of rise of the groundwater table are a key measure to prevent loess landslide hazards and improve the geological environment on the slope of the Southern Tableland of Jingyang County,Shaanxi.
出处
《工程地质学报》
CSCD
1995年第1期56-64,共9页
Journal of Engineering Geology
关键词
黄土
滑坡
灾害
地下水
引水灌溉
防治措施
Nanyuan in Jingyang County,Irrigation,Groundwater,Loess landslide.Treatment measures.
