复杂环境中深基坑的爆破开挖

根据工程处于复杂地理环境中的特点,通过试验性实施及适时优化,采用静力爆破与动力爆破相组合的方式进行深基坑中风化岩带的爆破与开挖,有效地限制约束边坡的位移发展,从而保证深基坑一次性爆破开挖成功.其中,动力爆破与静力爆破的区域划分是通过爆点距周边重要建筑物不同距离进行的安全用药量精确计算确定的.通过科学的施工管理,本工程最终取得了良好的效果.

Research and Practice of Deep Foundation Pit Blasting Excavation in Complicated Geographical Environment

Through experiments and timely optimization,the blasting and excavation of airslaked rocks in deep-based pit with complex geographical environment are performed by means of both static blasting and dynamic blasting.This project effectively restrained the displacement of side slopes and then secured the achievement of deep-based pit blasting.The area coverage of static blasting and dynamic blasting was decided by calculating the precise detonator in different distance between the burst point and important peripheral buildings.This project has achieved good results through scientific construction management.