Research On The Karst Exploration Of Zhendong Station Of Xuda Railway Based On Electrical Sounding Technology

Based on electrical sounding technology,this paper investigates the karst at Zhendong station of Xuda railway,Luzhou City,Sichuan Province.Based on electrical sounding technology,it is inferred that the spatial distribution and scale of subgrade karsts,combined with drilling comprehensive research,provide basic data for karst treatment.Firstly,this paper introduces the geo-environmental conditions of the station and analyzes the causes of karstification,and chooses the symmetric symmetric four-pole electrical sounding method for karst investigations.Then,the symmetric four-electrode sounding field work and data processing are introduced.Inversion and infers the karst distribution and scale of the subgrade.It was verified by the later drilling,the earth-rock interface and caverns speculated by electrical sounding,the degree of coincidence with the borehole exposure conditions exposure is very high.Finally,comprehensive study of electrical sounding and drilling,summarize the relationship between the surrounding rock and the resistivity of the cavern,karst development characteristics.Provide basic data for subgrade karst treatment.