Geological survey via electrical graphics 2,3-dimensional method, a case study at Ngu Hanh Son district, Danang city

Abstract

This article presents the study results of soil characteristics at three sites in the new residential area of Ngu Hanh Son District, Da Nang City. About 231 data points were collected on three lines measuring 22m in length, on an area of about 220m2, at the south-east corner of Doan Khue and Le Huu Khanh streets of Ngu Hanh Son district. Analytical results show that in this area in depth study, the basic geological structure is divided into two classes with the characteristics of groundwater distribution and different material composition. Specifically, at a depth of about 3m along the Oz axis, along axis Oy of about 8m and along the axis Ox of about 10m, the groundwater density is greater than that at other locations. At the location of line 2, geological layer is filled with red basalt, black gray clay, mixed with sand and crushed sandstone thicker than that at the other two lines.