【摘要】 在建基坑工程中场坪爆破施工安全控制的目标是确保基坑围护结构及其相邻环境的安全。设计主要针城市复杂环境下进行的基坑工程坑底场坪爆破,根据基坑安全要求,结合爆破安全规范所确定的相邻环境安全控制目标,通过爆破方案的选定及其孔网参数的设计,分析拟定了基坑围护结构振动安全标准为7cm/s。通过爆破防护与监测方案设计,实现控制爆破振动、飞石等的危害。爆破施工监测结果表明,爆破方案设计所拟定爆破施工及其控制方法满足规范的控制要求,确保了爆破施工安全、高效、顺利进行。更多还原

【Abstract】 The control object of grading blasting construction guarantee the safety of pit support structure and its surrounding during the pit construction.This design focuses on grading blasting in pit construction in urban complex environment.Based on the pit safety requirements and the regulated safety control object of adjacent surrounding by blast safety regulation,and through the choice of blasting scheme and its hole and network parameter design,the vibration safety standard 7 cm/s of pit support structure was defined preliminarily.Through the safety protection and monitoring,the damage of blasting vibration,flyrock,etc.was controlled.The monitoring results show that the blasting construction and its control measures of design content to the regulation requirements and all of those guarantee the safe and effective process of blasting construction.更多还原