Experimental measurement of acoustically induced surface vibration with different soil conditions

Abstract

Experimental measurement is performed to investigate the acoustically induced surface vibration with different soil conditions. Using the method of scanning detection and analyzing the three-dimensional (3D) characteristic diagram of surface vibration, the influence of soil properties, such as porosity and humidity, upon the signal of acoustically induced surface vibration is measured. The experimental results show that the surface vibration reduces with the decrease of soil porosity and reduces a little with the increase of soil humidity; and with a big plastic landmine buried, the surface vibration enhances significantly. It indicates that the signal of acoustically induced surface vibration mainly depends on soil porosity and mechanical effect of buried objects.

Keywords

Acoustic-to-seismic (A/S) coupling / Soil porosity / Humidity / Landmine detection

Funding

National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809(41104065)

Science and Technology on Near-Surface Detection Laboratory(TCGZ2015A005)