隧道爆破技术在开挖污水传输设施竖井中的应用  

Application of Tunnel Blasting Technology in Excavating Shaft of Sewage Transmission Facilities

作　　者：胡浩川[1] 安玉东[1] 李本伟[1] 陈德志[1] 陈晨[1] 周应军[1] 罗鹏[1] HU Haochuan;AN Yudong;LI Benwei;CHEN Dezhi;CHEN Chen;ZHOU Yingjun;LUO Peng(Sinosteel WuHan Safety and Environment Protection Research,WuHan 430080,China)

机构地区：[1]中钢集团武汉安全环保研究院有限公司

出　　处：《煤矿爆破》2019年第5期35-38,共4页Coal Mine Blasting

基　　金：国家自然科学基金面上项目(51574183)

摘　　要：采用隧道爆破技术爆破开挖大东湖核心区污水传输系统4#竖井,通过选取合理的孔内、孔外延时参数和起爆顺序实现单孔单响,严格控制单耗、单孔装药量、一次起爆药量,保证足够的堵塞长度和堵塞质量,结合针对性的技术措施有效控制了爆破振动对现浇圈梁和围护桩的有害效应。Blasting excavation No.4 shaft of sewage transmission system in the core area of Dadong lake by using tunnel blasting technique.Hole-by-Hole blasting is realized by selecting reasonable time delay parameters and initiation sequence inside and outside the hole.Strictly control single consumption,single hole charge and primary explosive charge,ensure adequate plugging length and quality.Combining with specific technical measures the harmful effect of blasting vibration on cast-in-place ring beam and retaining pile is effectively controlled.

关 键 词：竖井爆破 隧道爆破 单孔单响 爆破振动 

分 类 号：U455.6[建筑科学—桥梁与隧道工程] TD235[交通运输工程—道路与铁道工程]