文档介绍：第 1 5 卷第 1 期工程爆破 Vol1 15, No1 1
2 0 0 9 年 3 月 ENGINEERING BLASTING M arch 2009
文章编号: 1006- 7051(2009) 01- 0020- 04
蓝商高速路崖底连拱隧道光面爆破
与临时支护施工技术
蔡宝卷, 沙友德
( 中建二局土木工程有限公司, 北京 101101)
摘要: 蓝田至商州高速路 C2 标崖底连拱隧道, 穿越地层复杂, 施工要求高。为保证工期和施工质量、
安全, 针对岩体特征及浅埋偏压段的实际, 进行合理的超前支护, 采用隧道光面爆破技术, 经现场试验, 对
连拱隧道开挖爆破参数、装药结构和起爆网路进行优化设计; 对钻爆、临时支护、量测的施工和管理, 提出
了合理的质量要求和安全措施, 进行绿色施工, 达到安全环保、改善爆破效果、降低施工成本的目的。
关键词: 连拱隧道; 超前支护; 光面爆破; 绿色施工; 环保
中图分类号: U4551 4; TD2351 374 文献标识码: A
CONSTRU CTION TECH NIQUE OF SMOOTH BLASTING AND
TEMPORARY SU PPORT FOR DOUBLE RANGED ARCH
TUNNEL UNDER CLIFF OF LANSH ANG EXPRESSWAY
CAI Bao2juan, SH A You2de
( Civil E ngineer ing Ltd . , Co. of the Second Bur ea u of Construction and
E ngineering of China , Beij ing 101101, China )
ABSTRACT: Passing through plicated geological stratum, the double ranged arch tunnel under
cliff of C2 Section of Lanshang expressway required high quality construction. For the consideration of
project schedule, construction quality and safety, r easonable over2front protection and smooth blasting
technique were adopted to meet the physical condition of rock mass characteristics and the shallow bur ying
pressed section. After tests in situ, the tunnel excavation parameters, explosive charging structur e and ig2
work were optimized, which were panied by bringing forward reasonable requirements and
safety measures fo