摘要
随着目前市政隧道建设的增多,势必会有部分隧道下穿城市重要结构物,但是施工中面临着必须保护具有重大利用价值的重要结构物。本项目施工涉及到隧道下穿城市防空洞,隧道顶板正好位于防空洞底板,属于零距离下穿,施工难度大。为了节约施工时间和投资,确保节点目标,综合施工安全、质量、节点工期目标及投资等各方面因素,选择在确保安全、质量及节点工期目标能够正常实现的施工方案,即采取零距离无损下穿防空洞的施工方案。该方案的成功实施表明:采取管超前、严注浆、弱爆破、强支护、短进尺、快封闭、勤量测,因地制宜地实时调整的施工方案,在保证安全的前提下,完全可能实现零距离下穿重要建筑物,也为隧道工程下穿重要建筑物建设提供参考。
The tunnel often has to cross underneath important buildings.It is necessary to protect these buildings.It is difficult to cross underneath underground shelter.Rational construction program,closely underneath crossing,is selected.The successful application of the construction program shows that closely underneath crossing existing buildings can be realized under strict control.The paper can provide references for similar projects in the future.
出处
《隧道建设》
2012年第S2期167-173,共7页
Tunnel Construction
关键词
隧道
浅埋
零距离无损下穿
防空洞
tunnel
shallow bury
closely underneath crossing
underground shelter
