DETERMINATION OF SHEAR WAVE VELOCITY OF SOIL LAYERS USING MULTICHANNEL ANALYSIS OF SURFACE WAVES (MASW) METHOD IN EMBANKMENT SOIL AT HIGHLAND FREEPORT

• Main Author: Putri Dalla, Meyke
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/77062
• Institution: Institut Teknologi Bandung

In this research, an evaluation method called Multichannel Analysis of Surface Waves (MASW) is utilized, which is a non-destructive seismic wave analysis method used to assess the physical properties of subsurface materials. This method can determine the relationship between shear wave velocity and the soil layer structure. In the initial stage, a literature study is conducted to learn about the MASW method itself, followed by data processing after obtaining field data. There are three main procedures in MASW: data acquisition, dispersion analysis, and inversion. The main focus of the study is to compare dispersion curves for the fundamental mode both theoretically and experimentally. The process of analyzing the data will employ the MASWaves source code as well as MATLAB. The final data will consist of profiles of shear wave velocity versus depth, which will later be compared with a table of soil layer structures to determine the types of rocks and soils at each depth. Through the data processing process, a shear wave velocity value of 445 m/s was obtained for a depth of 30 meters. When compared with the soil layer classification table, it can be determined that the measurement location falls into class C, which comprises dense soil and soft rock.