摘要
浙江永康市繁华地区深基坑开挖,属复杂环境下的石方控制爆破,为减小爆破振动对周边建(构)筑物的影响,在主爆区采取浅孔大、小孔径相结合方式的爆破方案;在爆区周边开挖减振沟、打减振孔及实施光面爆破;严格控制每次爆破最大单段药量和总装药量;并采取了近体防护与隔离防护相结合的安全防护措施。爆破效果达到了设计要求,其经验可供类似工程参考。
The engineering of deep foundation pit excavation in the downtown area of Yongkang, Zhejiang Province, belonged to stone controlled blasting in the complex condition. The following steps were adopted： combined shallow hole with big and small holes in the main blast area; carried out smooth blasting by way of digging damping ditches and holes around the blasting area; seriously controlled maximal segment charge everytime and the total amount of charge; took safety defence by close and separate defence. The blasting effects reached to the design request and the experience for reference could be useful for the similar engineering.
出处
《工程爆破》
北大核心
2010年第1期35-39,共5页
Engineering Blasting
关键词
基坑开挖
光面爆破
减振沟
安全防护
Foundation pit excavation
Smooth blasting
Damping ditch
Safety defence
