Abstract
In the formation of the blasting seismic wave transmission is a complex mechanical process. Blasting seismic wave in different geological structure formation of the interface, diffraction, reflection, projection as the incident Angle is different, all kinds of waveform transformation, formation of different types, different amplitude, frequency and phase of various wave superimposition of random composite wave. Blasting seismic wave propagation distance (horizontal distance and height difference), and the performance of the explosive, explosive charge, charge structure, priming method, congestion state what international airport, the plane and direction, topography and geological conditions will affect the blasting vibration effect. In engineering by empirical formula to estimate main parameters of blasting seismic wave and the structure of the empirical formula is the result of the use of theoretical analysis, by blasting of similar rate to determine the parameters in the formula is made up of many engineering measured data from statistical analysis, or directly by the measured parameters of the blasting seismic wave is given. In this paper, through various points were set in the prison line large speed is the most value, using the mathematical statistics regression analysis method, attenuation coefficient is obtained, and then back to the formula of single ring allows maximum dose safety distance calculated.
Highlights
Fair and accurate judgment unit during blasting explosion scope of blasting vibration effect and the influence degree, must be based on the blasting site terrain
According to the actual situation, considering the influence of different direction and geological conditions change, the three tests were conducted and the arrangement of measuring points are valid at the time of blasting, three test results are as follows
The author thinks that should be adopted by the field test of regression analysis to determine the two values
Summary
A tunnel construction, the villagers reflect negatively with the vibration caused by blasting construction building, blasting excavation exposed rock is gray. Blasting area near a small building height is relatively high, most of the building elevation the blasting area is low, most of the houses have been built for brick structure since. 3 times of field vibration test were conducted on site Blasting area near a small building height is relatively high, most of the building elevation the blasting area is low, most of the houses have been built for brick structure since. 3 times of field vibration test were conducted on site
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