以上海青草沙5号沟泵站基坑建设为背景,通过对基坑内支撑与围檩的多次爆破方案和所监测到的爆破振动数据进行分析对比,总结出一套基坑内支撑与围檩爆破拆除方法。该方法在保证爆破效果的基础上,使得基坑内支撑与围檩的爆破拆除对地下挡土墙、在建基坑结构、塔吊、周边建筑结构等的影响最小。 Based on the construction of the foundation pit of No. 5 Goucao Pumping Station in Shanghai Qingcaosha, the blasting vibration data and the blasting vibration data of support and enclosure in the foundation pit are analyzed and contrasted, and a set of internal support and enclosure Demolition blasting method. On the basis of ensuring the blasting effect, the method makes the blasting demolition of the support and the enclosure in the foundation pit have the least influence on the underground retaining wall, the structure of the foundation pit, the tower crane and the surrounding building structures.