Pneumatic Seismic Source for Monitoring Velocity Changes of Seismic Waves in Underground Coal Mining Conditions

Abstract

In the article, the concept and the first test of the seismic source WBZ Type 2 were presented. The idea is to construct the seismic source tailored for underground measurement requirements, including intrinsically safety demand. The source will be triggered every few minutes or less, which gives the ability to track seismic velocity changes with high accuracy in time. Quasi-continuous measurement allows to monitor stress field changes, and in consequence, reduce the hazard of rockburst. The WZB type 2 will be compatible with the ARES-5/E seismic system.