FORMATION OF CRATERS DURING GAS EMISSION IN A WEAKLY COHESIVE MEDIUM

Abstract

This article presents the results of experiments conducted on a two-dimensional optically transparent model, aimed at physically modeling a gas outburst in a loosely cohesive granular medium. The proposed model allows for visualization of the processes of gas destruction in the medium during gas filtration, followed by the release of the destroyed mass. Images of the formation of domes above the daylight surface 
and their destruction are obtained in real time. After the outburst, craters form, which retain their shape in the case of wet sand due to the strength generated by capillary forces. Based on the experimental results, the geometric parameters of the craters were determined depending on the depth of the gas source.