激电测深在城市浅层地下水调查评价中的应用

Application of induced polarization sounding method to exploration shallow groundwater in the city

水资源是社会经济可持续发展中至关重要的自然资源,针对榆林市水资源短缺现状,在榆林市区及周边开展了城市水文地质调查工作.本次地球物理勘探的目的是探明城市300 m以浅的地层岩性结构,主要确定第四系含水介质的岩性、厚度、埋深及基底形态,配合完成城市地下水调查评价工作.激电测深是地下水勘探的重要技术手段,本次在调查区共布设了两条激电测深剖面,通过研究调查区激电测深的成果资料,结合水文地质资料和钻孔信息,成功划分含水层,确定基岩面,取得了良好的应用效果,为激电测深在城市地下水调查评价的应用提供了理论支持,为后续水文地质工作提供参考依据.

Water resource is important for sustainable development of human society and economics, For water shortages in Yulin, we have the hydrology and geognosy survey in Yulin and surrounding areas. The aims of this geophysical exploration is to ascertain the formation lithology Within 300 meters underground, especially lithology and thickness of the Quaternary aquifers, then we would complete the task of the investigation and evaluation of groundwater in city. Induced polarization sounding method is a important technique means to the detection of groundwater. We have setted up two IP sounding lines in Yulin. We not noly analysed the research results of induced polarization sounding method, but also referenced the hydro-geological data and drilling information.Ultimately,we classify the aquifers and find out the bedrock top surface depth,this indicates that this method has better applicable effect. The research results would provide evidence to water exploration in city and provide reference for subsequent hydrology geology work.