Application of high-density resistivity method to groundwater exploration in Heifangtai
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 high-density resistivity method to study the groundwater level is a reliable research approach.
irrigationloess landslideshigh density resistivity methodgroundwater
NETL
NSTL
万方数据
维普
