Research On Blasting Vibration Effect And Control Of Step By Hole Blasting In Complex Environment

With the development of modernization,the transfer of blasting area from suburb to city,the surrounding environment has become more complex,more stringent requirements for the control of blasting hole by hole blasting technique,which make full use of explosive energy and has the characteristics of good blasting effect,small vibration and remarkable comprehensive benefit,and provides a theoretical basis for the optimization of blasting parameters science,so the hole by hole blasting in control blasting engineering of complex surroundings is more widespread.Huaxi district qingyan area longjing to yan lou road engineering environment is complex,in this paper,by adopting the combination of field experiments and theoretical analysis method,blasting vibration attenuation law in the region,the influence of blasting vibration on the surrounding environment,and the control measures are analyzed,the analysis conclusion is as follows:（1）Through a large number of measured blasting vibration data and the region was obtained by regression analysis software calculation of blasting seismic wave attenuation rule is:V=57.12×((Q^1/3)/R)^1.36.（2）According to the 2014 version of the vibration velocity of blasting safety practice safety criterion and combining with the actual engineering situation surrounding the protected objects position,can be concluded that the influence of the protected objects of distance biggest puckering dosage parameter.（3）Due to the engineering design scheme used to connect digital electronic detonator detonating network,its parameters is also for digital electronic detonator,and generally used in practical blasting engineering is ordinary detonating tube connection of detonating network,the ordinary digital electronic detonator detonating tube of the blasting vibration is relatively poor,so the largest single span want right amount of lower dose parameters,to achieve safety vibration velocity range,assuring the safety and integrity of the protected objects.（4）Using the grey correlation analysis method to analyze the important degree of theinfluence factors of blasting vibration effect,by 30 groups of measured blasting vibration data,selected the 7 samples of vibration data for the analysis,it is concluded that the factors influencing the blasting vibration effect of importance order,by analyzing the corresponding safety control measures are put forward,effectively reduce the harm of blasting vibration.Parts of this paper does research in Guizhou environment complex control blasting vibration and safety control has a certain theoretical significance and practical value.