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工程概况 工程位于重庆市中区的繁华中心地带,从较场口至朝夭门一段,施工困难区段长270米,开挖断面50多平方米,是排危抢险的困难施工区段。该段地表建筑物林立,沿通道地表的高层建筑有:歌剧团丙幢住宅、烟酒公司、7951住宅、区法院住宅等.其中烟酒 QC药卷断裂控制爆破根据《金属矿山》1990年第三期刊载,QC药卷可实现断裂控制爆破。该药卷是在炸药包外装上开有不同角度、形状和数目的切槽,通过切槽控制爆炸应力场的分布和爆生
Project Overview The project is located in the bustling center of Chongqing City, Central District, from the mouth to the North door to a section, construction of 270 meters long section of the difficulties, excavation section of more than 50 square meters, is a dangerous row of dangerous construction section. There are many high-rise buildings along the surface of the passageway, including Opera House C Housing, Tobacco and Alcohol Company, 7951 Residential Building, Residential District Court, etc. Among them, Three issues, QC drug roll can achieve fracture control blasting. The medicine roll is provided with different angles, shapes and numbers of slots on the exterior of the explosive pack to control the distribution and explosion of the stress field in the explosion