Complex Rock Tunnel Blasting Damping Technology

There is more and more inter-mountain tunnel construction in China’s mountainous areas, how to reduce the tunnel blasting vibration hazards is concerned by the society. Tunnel blasting vibration control related to the smooth progress of the tunnel construction and the lives and safety of construction workers. This thesis detailed analysis of this problem under the engineering background at Shiyan-Baihe highway.By study of the explosion seismic wave propagation and failure mechanism, the paper has been the law of the destruction of tunnel surrounding rock and the type of injury. Damage characteristics, specific description of the definition of injury and described the concept and the central idea of the various injury models.Expand the paper through the longest tunnel on the Shi-yan Shirakawa highway tunnel which Huang-long tunnel surrounding rock the acoustic test, analysis and calculate the damage and injury law in the surrounding rock through the test data, this test is not only on the tunnel wall rock damage quantified, but also played a guiding role in the back of how to reduce the blasting vibration hazards. Know the specific damage of the tunnel, according to the construction site conditions, from all aspects of the design work of the blasting shock absorption and vibration testing by the bursting of the scene, the surrounding rock particles during blasting vibration velocity and vibration frequency, and other important indicators. Accordance with the relevant safety standards, to verify whether the reduction design to achieve the purpose.Theoretical research and field testing aspects of the work of this paper which is consistent with engineering practice has a certain reference value and significance for the similar project.