Research On The Deformation Law Of Roadway Surrounding Rock Under Blasting Vibration

The blasting action to the rock of chemical explosive is a very complex physics and chemical process, and the demolition broken crag mechanism existed has not uniformed very well.The influence to the wall rock of vibration blasting in the process of blasting was still a very complex topic, this question involved to many disciplines such as the explosion mechanics, the rock mechanics, the damage mechanics and the fracture mechanics.This article has compared to analysis various rock texture model and rock demolition damage model good and bad points in the foundation of demolition damage break mechanism and demolition vibration theoretical analysis;and given the rock mass through the numerical simulation by the quota description foundation,has further analyzed the rock dynamic demolition damage model. East lane of SanTang mill has conducted the industrial experimental study, determined under many tunneling circulations to demolish the vibration function to the adjacent formation loose circle influenced size.Used large-scale finite element software ANSYS/LS-DYNA to the adjacent formation in the dead weight function and under the demolition vibration function mechanics characteristic and the damage,the displacement characteristic has carried on the simulation.First using the ANSYS implicit analysis to the adjacent formation under dead weight function damage,mechanics characterist has carried on the simulation,then takes the initial condition by this initial nodal displacement,has analyzed under the demolition vibration function using the LS-DYNA formidable explicit analysis functional simulate the adjacent formation damage and mechanics characteristic,then carried on the contrastive analysis again with the actual result.