大断面公路隧道紧急停车带施工方案的比选与应用

 

(陕西高速公路工程咨询有限公司,陕西 西安 710061

  考虑到安全运营需要,目前我国高速公路特长隧道均设置了紧急停车带,但紧急停车带施工难度较大,安全风险较高。本文结合铜黄高速公路花石崖隧道紧急停车带施工,通过三个施工方案的比选、论证,确定了在本隧道地质围岩等条件下,采用三台阶七步法开挖,并对方案实施情况进行阐述,期望对同类隧道紧急停车带施工提供借鉴。

关键词隧道紧急停车带施工方案

中图分类号U455          文献标识码A

Comparison and Selection of Construction Schemes of Large

Section Highway Tunnel Emergency Parking Strip

LU Lin

Shaanxi Expressway Engineering Consulting Co., Ltd..Xi'an 710061China

Abstract: Considering the needs of safe operationat presentthe highway tunnels are equipped with emergency parking strips in our countrywhile the emergency parking strips construction are difficultyand with high safety risk. This paper discusses with Huashiya tunnel emergency parking strip construction in Tonghuang expressway. Through the comparison and demonstration of the three construction schemes three steps and seven-step excavation method is presented under tunnel surrounding rock conditionsand the construction project implementation is expoundedwhich can provide reference to similar tunnel emergency parking strip construction.

Key words: tunnelemergency parking stripconstruction scheme