Detection Research of Multiple Types of Groundwater Occurrence by Electrical Resistance Tomography in Ganzhou Area
In order to solve the problem of local water shortage.The multiple types of groundwater occurrence are detected by the electrical resistance tomography combined with fundamental geological,hydrogeology and rock resistivity properties in this paper.Based on the multiple types of groundwater occurrence,the water-bearing distribution patterns,mechanism and physical parametersare analyzed,and the resistivity inversion results are fur-ther comprehensively interpreted.Then through the illustration of groundwater exploration and well drilling in pore water,bedrock fissure water and karst water areas,the stratigraph-ic boundary,fault structure and aquifer space are divided to infer the further underground water-bearing target area.This paper proposes a focus detection of both fault structural belt,stratigraphic unconformity and water resisting rock stratum especially for the Creta-ceous red bed area,in which the well location and depth are determined according to the in-terpretation of resistivity inversion by electrical resistance tomography to achieve high accu-racy of water prospecting and well drilling in several groundwater occurrence types.Compar-ative drilling information verifies that the electrical resistance tomography is efficient in groundwater prospecting in multiple types of groundwater occurrence.The paper summari-zes the experiences of electrical resistance tomography in groundwater exploration in differ-ent lithology and multiple types of groundwater occurrence.The succeeding expert review verifies thesuccess rate of over 80％waterwells digging in southern Ganzhou.The applica-tion results provide an important basis for emergency groundwater prospecting in mountain-ous and remote disaster areas.
NETL
NSTL
万方数据
维普
