摘要
板桃隧道是渝怀铁路10大控制工程之一，出口特大溶洞段主要穿越O1m页岩夹砂岩、O2＋3，灰岩、S1L页岩夹砂岩地层。在处理板桃隧道特大溶洞期间，由于爆破扰动造成溶洞内未开挖段大量的塌方，随着溶洞的处理，溶洞顶板的标高发生了很大的变化，该段采用桩基托梁。在线路出口端通过设置施工迂回导坑，保证施工顺利进行；在处理岩溶水方面以疏排为主，采取设置排水竖井、隧底跨线涵洞、引水洞、排水沟及泄水洞等措施，并对整个特大溶洞的施工进行了总结分析，以期为类似工程的设计、施工提供借鉴价值。
Bantao Tunnel is one of the ten control projects of Yu -Huai Railway. The extra especially big limestone cave exit mainly runs through O1m, shale sandstone, O2＋3 limestones, S1L shale sandstone. During dealing with the extra large cave of Baotao tunnel, as a result of large scale of landslide in unexcavated cave, the cave roof has undergone a drastic change in elevation with cave processing. This area applies girders supported by pillars. Construction circuitous route is set up in the tunnel exit to ensure the smooth construction. In terms of dealing with Karst water, drainage is the key method, adopting the setup of upright drainage well, the tunnel across the end line and culverts, diversion tunnel, drainage ditches, sluice tunnel and so on. And the entire construction of the extra large cave is summarized and analyzed with a view of offering reference value to similar projects in the design and construction.
出处
《矿业研究与开发》
CAS
北大核心
2006年第B11期60-62,86,共4页
Mining Research and Development
关键词
特大溶洞
排水竖井
隧底跨线涵洞
引水洞
Especially big limestone cave, Drainage shaft, Subterranean bottom cross line culvert, Water - inducting tunnel
