Application of MASW to Assess Stiffness of Mine Boundaries Surrounded by Water Bodies-a Case Study

Multi-Channel Analysis of Surface Wave (MASW) has emerged has a powerful, effective and noninvasive technique to estimate shear wave velocity (Vs) profile using surface wave energy. The shear wave velocity can be used as a proxy to evaluate stiffness of the subsurface, which is extremely useful for geotechnical applications. As it has high spatial resolution and non-invasive nature, conventional invasive methods can be replaced by it. It is always important to assess the embankment strength of mine boundaries to prevent any possible accidents. In the present study, embankment strength of mine boundary, surrounded by water bodies was evaluated using MASW to analyze vulnerability of possible flooding due to surrounding water bodies. To achieve objective, we have evaluated the stiffness of subsurface formation using MASW.

MASW profiles (22 no’s) were carried out on the mine boundary. Results reviles that the massive compact formation are present from the depth of 25–30 m at all locations. MASW measurements indicates the presence of moderately compact and compact formations below the level of the water body and soft formations are not found below the level of water bodies, which minimizes the threat of surrounded water bodies to mine operations.