Research on the method of four-dimensional seismic survey for the gob area in coal mines

The seismo-geologic condition of the gob area of a coal mine is analyzed,many tests are made in order to study the collected parameters and data processing methods,and then the seismic data with high resolution and high signal-noise ratios are obtained.The boundary of the gob area has been lined out correctly on the time sections.The reflex wave of the thin coal seam under the gob area is continuous and has high-resolution.Through contrasting four-dimensional seismic data,the compactness and the uniformity of the interior strata can be descried.This technology can be used to provide geological status for coal mine safe production and for preventing and treating the geological disaster of the subsidence area of coal mines.