安徽池州神山物流廊道1~#隧道出口段爆破开挖施工工艺  

Blasting Excavation Construction Technique of the Exit Section of 1~# Tunnel of Shenshan Logistics Corridor in Chizhou City,Anhui Province

作　　者：杨翎 陈建安 Yang Ling;Chen Jianhn(Anhui Jiangnan Blasting Engineering Co. , Ltd)

机构地区：[1]安徽江南爆破工程有限公司

出　　处：《现代矿业》2018年第3期222-224,227,共4页Modern Mining

摘　　要：安徽池州神山物流廊道1~#隧道出口段为浅埋段隧洞,岩体风化程度严重,稳定性较差。为实现浅埋段隧洞安全爆破掘进,减少爆破掘进对隧道顶部围岩的破坏及扰动,通过选取合理的分步开挖方式,设计合理的进尺爆破起爆顺序,使得浅埋段隧洞施工得以安全平稳进行,可为类似浅埋段隧洞爆破开挖施工提供参考。The exit section of 1~# tunnel of Shenshan logistics corridor is belongs to shallow buried section tunnel,the weathering degree surrounding rock mass is high and its stability is poor. In order to complete the blasting excavation construction of the shallow buried section tunnel,reduce the disruption and disturbance of blasting excavation to the surrounding rock in the top of tunnel,the reasonable step-bystep excavation method is selected,and the reasonable blasting footage of detonating sequence is adopted.The practice results of the above blasting excavation construction scheme proposed in this paper show that the shallow buried section tunnel is excavated safety and smoothly,it is can provide some reliable reference for the blasting excavation construction of the similar engineering.

关 键 词：浅埋段隧洞 爆破掘进 围岩稳定性 爆破扰动 

分 类 号：U455[建筑科学—桥梁与隧道工程]