Geophysical method exploration for slope failure investigation

Abstract

A combination of seismic refraction survey, electrical resistivity method and integration with borehole method has been used for ground exploration to study the slope surface failure along the study area at Kayangan Height, Selangor. This study focuses on investigating the possible cause of the slope failure at the area. By necessity, non-destructive method like electrical resistivity test is the most suitable method as this method can determine the subsurface water conditions. Meanwhile, seismic refraction test is able to determine the type of subsurface layers and level of bedrock. Seismic refraction test can guide the borehole drilling works which can provide borelog data. Based on the study, seismic tomogram and 2D resistivity imaging results provide complementary information to each other. The existing geotechnical borehole logs refined both seismic and 2D resistivity results. Therefore, the study shows that the electrical resistivity test, seismic refraction test and borelog data in combination, could be an effective tool and cost effective for slope failure investigation.

Bearing Capacity Equations for Intact Argillaceous and Arenaceous Rocks in Malaysia Derived from P-Wave Velocity

“…For example, an increase in the degree of fracturing leads to a decrease in the P-wave velocity value. The geophysical techniques which can be used in the ground to identify the velocity value of the ground's elastic disturbance was suggested by Abdullah et al, [35] and is called the seismic technique.…”

Landslide susceptibility mapping of Penang Island, Malaysia, using remote sensing and multi-geophysical methods

“…However, Tay et al (2015) proved that the frequency ratio (FR) model has a high accuracy compared to those methods. Additionally, in understanding the spatial variability of surficial and subsurface soil-rock conditions of Penang Island, many geophysical methods such as electrical and seismic refraction methods, with soil and rock mass test analyses, have also been conducted, e.g., (Pradhan & Lee, 2010;Bery, 2016;Abdullah et al, 2020;Akingboye & Bery, 2022, 2023. These studies indicate that soil behavior is a complex phenomenon related to various causative geologic hazards.…”