微振动浅孔控制爆破在基坑开挖中的应用  

Application of Micro Vibration Short-hole Controlled Blasting in Foundation Pit Excavation

作　　者：赵占军[1] 

机构地区：[1]石家庄职业技术学院建筑工程系,石家庄∥副教授050081

出　　处：《城市轨道交通研究》2016年第4期73-77,共5页Urban Mass Transit

摘　　要：某地铁盾构始发井处基坑岩层属于坚硬裂隙岩,岩石呈块状或巨块状,采用非炸药爆破方式施工很难对石方进行开挖,且该基坑紧邻小区建筑物及交通要道,炸药爆破极易对周边环境和安全造成影响,因此在基坑开挖中采用了微振动浅孔控制爆破方法。介绍了采用微振动浅孔控制爆破的技术方案(包括爆破参数选择、爆破施工流程及相关工作)和安全防护措施。爆破振动监测及数据处理分析表明,采用微振动浅孔控制爆破技术并制定严密可靠的安全防护措施,能够有效控制爆破飞石、噪声及冲击波,是一种安全、经济、有效的施工方法。The foundation pit rock of the shield starting well on a certain metro line is tough fractured rock in block or giant lump shape,and is hard to excavate by non-explosive blasting.But the explosive blasting will easily impact on the surrounding environment and the safety in close distance between the blasting site and the community construction. In this paper,a micro vibration short-hole controlled blasting with reliable safeguard is introduced,including the selection of blasting parameters,the blasting construction process and other related works. The vibration monitoring and data processing analysis show that this technology can effectively control the blasting slungshot,noise and shock wave,therefore is a safe,economic and effective technology.

关 键 词：基坑开挖 微振动 控制爆破 安全防护 

分 类 号：TU753[建筑科学—建筑技术科学]