城区浅埋大断面隧道减震爆破技术  

Demolition Shock Absorption Technique of Shallow Covered Urban Large Section Tunnel

作　　者：唐果良[1] 黄伦海[2] 

机构地区：[1]中铁隧道集团三处有限公司,深圳518000 [2]重庆交通科研设计院,重庆400067

出　　处：《地下空间与工程学报》2005年第2期310-314,共5页Chinese Journal of Underground Space and Engineering

摘　　要：以重庆轻轨较新线临江门车站隧道为例,介绍了复杂条件下城市浅埋硬岩特大断面隧道减震爆破施工方法,由于采用了一系列综合减震措施,开挖爆破对隧道周边围岩的影响降低到最小程度;在爆破设计中,掏槽眼增加了减震孔,周边眼增加了导向孔,采取隔孔装药方式,对提高炮眼利用率起到了良好的作用。监测结果表明,爆破震速控制较好。This paper is based on the construction of linjiangmen station tunnel of the Chongqing Jiaoxin Light Railway, the demolition shock absorption applied to urban shallow covered large section tunnel in hard rocks under complicated conditions is introduced. Because of adopting a series of comprehensive shock absorption steps, the excavating demolition influece on the rocks arround the tunnel is decreased to the least degree. In the demolition designing, shock absorption holes are used to the cutting section, guidance holes are used to the surrounding holes, the powder is charged for the separated holes. The result of monitor show that the demolition vibration is well controlled.

关 键 词：浅埋大断面隧道 爆破技术 重庆轻轨较新线 城区 特大断面隧道 临江门车站 复杂条件下 炮眼利用率 施工方法 减震爆破 减震措施 开挖爆破 爆破设计 装药方式 监测结果 掏槽眼 导向孔 周边眼 硬岩 

分 类 号：U455.6[建筑科学—桥梁与隧道工程] TD235.4[交通运输工程—道路与铁道工程]