The Impact Of Blasting Vibration On The Surrounding Environment

With the vigorous development of the city,in order to save economic costs,a part of the urban area USES open blasting for mountain excavation.The vibration effect caused by the open blasting in the urban area is likely to endanger the safety of surrounding buildings and personnel.Therefore,how to better reduce the impact of blasting vibration in open blasting construction has become a current research direction.By studying the influence of different factors on the vibration of open blasting,it is of great practical significance to improve the design scheme and construction process to reduce the damage of structures and improve the construction safety.Trait in this paper under construction farmers bo in fuquan city land leveling engineering buyi and miao minority autonomous prefecture as the backing,in acquiring,on the basis of blasting vibration monitoring data,through the regression analysis it is concluded that the attenuation law of blasting seismic wave,and combined with ANSYS/ls-dyna finite element software to carry on the numerical simulation,simultaneous blasting is studied and the differential blasting blasting vibration effect and different height of the same particle source generated by analysis of the blasting vibration effect.The main research contents and achievements are as follows:First,on the basis of the blasting vibration testing,using the least square method to obtain the blasting vibration monitoring data,regression analysis to determine Steve sadove,empirical formula of the value of the study area is established peak velocity attenuation empirical formula of the blasting seismic wave,and the main frequency of blasting seismic waves are statistical analysis,summed up the main frequency changing with the zero distance.Second,establish a three dimensional numerical model for open-pit blasting construction,using ANSYS/ls-dyna finite element software to carry on the numerical simulation,the effect factors of blasting vibration control is used to numerically simulate and study propagation rules of blasting vibration in the open air,according to the results of the simulation analysis simultaneous blasting and millisecond blasting effect on blasting effect,different height of the source of the same particle vibration effect.Third,combining with the characteristics of agriculture bo open-air blasting excavation in fuquan city and the surrounding environment,a variety of vibration control measures are put forward,mainly has shock cut blasting,choosing the appropriate explosives,pre-splitting blasting,and millisecond delay blasting and hydraulic blasting,selecting rational blasting parameters,formulate rational detonating sequence,choose good blasting equipment etc.