Research On The Prevention Of Rock Burst By Adopting Decoupling Blasting Method

Due to increasing mining depth under the coal mine， the pressure conditions of thesurrounding rocks of the roadway become more complicated and deteriorative. By themeantime， rock bursts occure more frequently with greater strength. In recent decades，much research has been done on the prediction and prevention of rock burst by scholars fromboth home and abroad. They have put forward many formation mechanisms and preventionmethods in this area. However， few reaserach has been done on the decoupling blastingmethod to release pressure， which is the main objective of this researh. Therefore， it mayshed new light on the rock burst preventon studies.Previous research has been done on the mechanism of rock blasting fragmentation anddecoupling blasting method to prevent rock burst as well as the stress-strain varration patternsof decoupling blasting with air and water as medium， which have provided theoreticalfoundation for the present research. When doing research on the pressure-release effects indifferent mediums， the researcher has simulated the mining stress distributions when usingdifferent blasting approaches in the mining process as well as provided a compatativeanalysis of the pressure-release effects by adopting the numerical simulation method. Basedon the simulation results， the researcher has come up with the conclusion that it will achievethe best effect under the three-hole triangle distribution scheme with water as the medium.Moreover， according to the experimental results， water-coupling blasting is a reliablemethod for the prevention of rock burst， which will also provide reference for thedevelopment of deep-hole water coupling blasting technology.