Seismic Exploration of the River Sand Mining Area

Abstract

Engineering geophysical exploration plays an important role in the geotechnical field. It is based on the difference in physical properties of rock, ore (or stratum) and surrounding rock, magnetization, conductivity, and radioactivity, and thus the distribution of various physical fields on the earth. Observations of changes and their changes are currently used in shallow seismic exploration and transient electromagnetic surveys. Based on the exploration demand of a river sand mining area, this paper studies the shallow seismic exploration method and transient electromagnetic method which can carry out geophysical exploration in the sand mining area, and analyse its conditions of using, mechanism principle, results analysis and reliable detection. The difference between the two is that the two have their own advantages and disadvantages. However, for the exploration requirements of the river sand mining area, the shallow seismic exploration has the advantages of lower cost, simpler operation and stronger anti-interference ability. Through actual operation, shallow seismic exploration not only detects the specific collapse area of the sand mining area, but also detects the influence range and depth of sand mining, and provides a data basis for site stability evaluation.