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Experimental Research on the Master Frequency of Blasting Seismic Wave |
MENG Hai-l,i GUO Feng |
China Academy of Railway Sciences, Beijing 100081, China |
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Abstract Research purposes: The master frequency of vibration is one of the issues being paid attention to by all researchers on the blasting seismic wave because ithas the obvious effecton the building damage, so ithas a practical significance to do study on the blasting seismicwave. The purpose of the experimental study presented in this paper is to study the relation between the change regulation of the master frequency of blasting seismic wave and the proportional explosives for starting explosion at the same stage and the distance from the testpoint to the explosive area.
Research conclusions:In this paper, based on the theory on the seismic wave transmitting in sticky elastic medium, the function relation between the blasting vibration frequency andmain influence factors, such as explosive and distance, is put forward, the regression analysis ismade for the realmonitored data on the blasting vibration obtained in Shenzheng Meishi Power Plantand the prediction formula for the master frequency under the specialblasting condition is obtained.These can be as the practical and theoretic albasis for studying the attenuation regulation of blasting vibration frequency and forprediction of themaster frequency of the similar blasting. The study finds the master frequency of the blasting vibration decreaseswith the increases of the explosive and distance.
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Received: 09 November 2009
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