Research Of Influence Of Blasting On The Tower On Adjacent High Slope

This paper researched the influence on the transmission tower on high slope which is produced by blasting based on the east road in front of Chongqing station in Jiangbei.The comprehensive data of vibration velocity of the transmission tower foundation on high slope beside the ramp had been monitored in the construction period.Meanwhile,finite element analysis software ANSYS/LS-DYNA had been used for numerical simulation of the transmission tower under blasting vibration effect to research the vibration velocity change law of the transmission tower.The main jobs of this thesis were as follows:(1)The formation process and types of blasting seismic wave has been discussed.In addition,this paper analyses relative parameters of the blasting seismic wave and factors influencing the strength of the blasting seismic wave.(2)Field monitoring scheme of the high voltage transmission tower was determined by analyzing practical engineering situation of the east road in front of Chongqing station in Jiangbei.The peak vibration velocity and main vibration frequency of the transmission tower foundation on high slope beside the ramp under blasting vibration effect were collected by using field test method.The transmission tower foundation response law of actual peak vibration velocity and main vibration frequency under blasting vibration effect was drawn by analyzing field monitoring dates.Meanwhile,this paper determined that the high voltage transmission tower was in a safe condition.(3)Finite element analysis software ANSYS/LS-DYNA had been used to calculate the peak vibration velocity of the transmission tower foundation on high slope beside the ramp under blasting vibration effect by creating three-dimensional numerical model according to the actual situation of the east road in front of Chongqing station in Jiangbei.Through the comparative analysis between field monitoring dates and numerical simulation results,the feasibility of numerical simulation method was proved.(4)In order to analyze the overall safety of transmission tower,the vibration velocity response characteristics of the node of tower at different heights had been researched by using numerical simulation method.Meanwhile,the influence on the dynamic response of the high voltage transmission tower on high slope under blasting vibration effect was researched when the distance between the explosive source and thelower edge of high was changed under the conditions of constant distance between the explosive source and the center of tower.