Author/Authors :
Su, Dengfeng State Key Laboratory of Coal Mine Disaster Dynamics and Control - Chongqing University, China , Kang, Yong State Key Laboratory of Coal Mine Disaster Dynamics and Control - Chongqing University, China , Li,Dongyang State Key Laboratory of Coal Mine Disaster Dynamics and Control - Chongqing University, China , Wang, Xiaochuan State Key Laboratory of Coal Mine Disaster Dynamics and Control - Chongqing University, China , Yan, Fuwen State Key Laboratory of Coal Mine Disaster Dynamics and Control - Chongqing University, China
Abstract :
As one of the most serious “side effects” of blast excavation, blast-induced vibration must be controlled for existing buildings and human beings. This paper proposes a method for blast-induced vibration reduction with water jet assistance according to the cutting characters of low-noised, environment-friendly water jet. The mechanism of vibration-isolation with water jet assistance was analyzed, and the stress wave energy attenuation models were established based on blasting theory and stress wave theory. Influence law on shock wave attenuation by vibration-isolation slot was studied by numerical simulation. Simulation results agree with the theoretical analysis roughly. The results of this study put forward a method for blast-induced vibration near blasting source and provide a certain theoretical basis.
Keywords :
Blasting Source , Analysis and Numerical Simulation , Reduction Effect , Stress Waves Caused , Water Jet Slotting
