Application of Controlled Blasting in Urban Complex Environment Foundation Excavation

Abstract

In the city buildings, dense area blasting to excavate mass rock belongs to the controlled blasting of stonework in complicated situations. In order to reduce the impact of blasting vibration on the surrounding environment, it is necessary to take a variety of blasting technology combined with the construction scheme. Lanzhou Ming Cheng Plaza foundation excavation uses millisecond short-hole blasting technology, by taking measures of choosing the reasonable digging groove position and control maximum charge weight per delay interval, achieved the purpose of control flying rock and reduce the blasting vibration.