Shahrzad SHAFIEEZADEH MAHANI - M.Sc. in Geophysics, Islamic Azad University, North of Tehran, Iran
MohammadAli RIAHI - Professor, Department of Earth Physics, Institute of Geophysics, University of Tehran, Iran

In this research which was carried out in the southwest of Qom, based on the results of field observations and boreholes excavated by geotechnical experts, due to the accumulation of subsurface water in some boreholes, as well as the existence of a gap and Seam in them, to check the possibility of existence Sub-surface fault in the range of boreholes and in order to identify the direction of the boreholes from sub-surface water, comprehensive studies were carried out using a massgeophysical approach. The Mise-a-la-masse method is a special electrical resistivity method and is applicable in some cases where the anomalies on the ground surface have an outflow, such as in terms of the degree of electrical conductivity contrast with the surrounding environment. Due to the good electrical conductivity of the target, the drop in potential inside the exploded mass will be noticeable. In this research, the mass-binding measurements were performed along the sides of three foursquare respectively (L,M,S) in the range that covers the boreholes 5-14, with a borehole concentration of 11 at 440 points with a distance of 5 m and a two-electrode array.

Groundwater Path, Fault, Mise-a-la-mass method, Electrical resistance, Qom’s Neyzar Plain