新建输水隧洞交叉段爆破施工方案设计  

The Design of Blasting Construction Scheme for the Intersection Section of Newly-built Water Conveyance Tunnel

作　　者：孟国良 张雷 谢凯强 张福炀 章东耀 陈熊熊 章宏烨 MENG Guoliang;ZHANG Lei;XIE Kaiqiang;ZHANG Fuyang;ZHANG Dongyao;CHEN Xiongxiong;ZHANG Hongye(Zhejiang Ansheng Blasting Engineering Co.,Ltd.,Shaoxing 312000,Zhejiang,China)

机构地区：[1]浙江安盛爆破工程有限公司,浙江绍兴312000

出　　处：《工程技术研究》2023年第13期61-63,共3页Engineering and Technological Research

摘　　要：针对新建输水隧洞下穿既有引水隧洞的爆破施工工程,为了确保引水隧洞的结构安全,保证施工过程中供水不中断,计划在交叉段采用管棚支护、小导洞先行开挖、再分层扩挖的施工方案。工程实践证明,隧洞开挖参数设计合理,爆破振动、应力破坏等有害效应控制在安全范围之内,确保既有引水隧洞结构不被破坏,从而保证整个工程顺利实施,为同类工程施工提供借鉴。In view of the blasting construction engineering of the newly-built water conveyance tunnel undercrossing existing diversion tunnel,in order to ensure the structural safety of the diversion tunnel and uninterrupted water supply during the construction process,it is planned to adopt the construction scheme of pipe roof support,small pilot tunnel excavation first and then layered expansion excavation in the intersection section.Engineering practice has proved that the design of tunnel excavation parameters is reasonable,and the harmful effects such as blasting vibration and stress damage are controlled within a safe range,ensuring that the existing diversion tunnel structure is not damaged,so as to ensure the smooth implementation of the whole engineering,and provide reference for similar engineering construction.

关 键 词：隧洞 小导洞 分部开挖 爆破施工 

分 类 号：TD235[矿业工程—矿井建设]