中文摘要：

由于农业灌溉,黑方台台塬边共发生了120余次黄土滑坡,严重威胁当地居民的生命财产安全.研究表明,该地区滑坡的主要诱因是黄土层中不断抬升的地下水,故对研究区滑坡的诱发形成机理展开分析探讨,就不能脱离对该地区黄土层中地下水分布规律的研究.基于此,本文运用高密度电法,对黑方台台塬内部及塬边滑坡区的黄土层中地下水分布规律进行探测研究.据三条物探剖面探测结果可知：1）研究区地下水中矿化度高,可断定其来源为农业灌溉;2）台塬内部黄土层中的地下水水位较为平缓,汇向台塬东北侧一带;3）而塬边水位骤降,趋势与滑坡地形基本一致,且滑坡坡顶处有局部水位抬升现象.物探结果与钻孔数据结果基本吻合,证明运用高密度电法对研究区地下水位进行探测是一种可靠的方法.

英文摘要：

Due to the agricultural irrigation,Heifangtai tableland edge had loess landslides for more than 120 times which caused a serious threat to local residences ＇ properties and lives.Research shows that the major cause of the landslide in loess layer is the groundwater rising.As a result,the research on the formation mechanism of landslide in the study area should also include the investigation of the distribution of groundwater in the loess layer of the area.This paper applies the high-density resistivity method to detect the distribution of groundwater in the loess layer in the Heifangtai Tableland and the slope landslide area.Results from the three geophysical profiling indicated：1） the underground water in the study area has high salinity,which is from agricultural irrigation;2） the groundwater level inside the tableland loess layer is relatively smooth and sinks to the eastern part of the tableland;3） the water level at the slope edge drawdown,with the trend consistent with the landslide terrain,and the regional water level rises at the top of the slide.Geophysical prospecting result is coherent with the drilling data,which proves that applying highdensity resistivity method to study the groundwater level is a reliable research approach.