工程爆破

2011, v.17;No.64(02) 31-33

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特坚硬岩石基坑浅孔控制爆破技术
SHORT-HOLE CONTROLLED BLASTING TECHNOLOGY FOR FOUNDATION PIT OF ESPECIALLY HARD ROCKS

付天杰;郭峰;
FU Tian-jie,GUO Feng(China Academy of Railway Sciences,Beijing 100081,China)

摘要(Abstract):

深圳市深云村经济适用房基坑底部开挖,遇有特坚硬岩石,需爆0.4~0.8m厚一层石方。在爆破设计和施工中,采用了多装药、同时爆、重填塞、强防护的技术措施,圆满完成了对其的控制爆破,经验可供类似工程参考。
During the process of excavating the foundation pit of affordable housing in the Shenyu village Shenzhen city,especially hard rocks in its bottom were encountered.Especially hard rocks were 0.4~0.8m thick and need be excavated by blasting.Many technical measures which were charging,blasting at the same time,adding length of stemming,and strengthening protection were adopted in design and construction of blasting.The especially hard rocks were excavated successfully by controlled blasting,which provided experiences for similar project.

关键词(KeyWords): 特硬岩;基坑爆破;浅孔控制爆破;防护技术
Especially hard rock;Blasting foundation pit;Short-hole controlled blasting;Protection technique

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作者(Author): 付天杰;郭峰;
FU Tian-jie,GUO Feng(China Academy of Railway Sciences,Beijing 100081,China)

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