大跨度隧道塌方分析与处治  

The Analysis and Treatment of Large-span Tunnel Collapes

作　　者：巢万里[1,2] 彭帆[1] 周利金[1] 

机构地区：[1]湖南省交通科学研究院,湖南长沙410015 [2]中南大学,湖南长沙410075

出　　处：《公路工程》2011年第2期115-119,共5页Highway Engineering

摘　　要：隧道施工属于地下隐蔽工程,地下岩性的多样性与复杂性,以及岩层的突变性等复杂影响使得对地质情况难以掌握。因而在隧道施工中塌方是常见事故,如何根据新奥法支护结构设计理论及平衡拱理念对隧道塌方原因进行了分析与处治是工程中的一大难点。以金钟皂隧道塌方为例,针对本次塌方事故具体情况和塌方影响因素,充分利用新奥法支护原理,运用平衡拱理论,采用空洞法为基础提出相应的综合处理措施,通过工后现场监测数据证明塌方处理方案是可靠的、其措施是充分的和有较大安全储备的。本工程对于指导和制定塌方处理方案提供了有利依据,对同类围岩隧道施工具有一定的借鉴意义。Tunnel construction is hidden underground project.The diversity and complexity of underground rock,as well as the complex strata of the mutation of the rock makes it difficult to grasp the geology.Therefore collapse is the common accident in the tunnel construction.It is a major engineering difficulty for the tunnel collapse on the analysis and treatment by using the New Austrian Design Theory and Support Structure Balance arch concept.In this paper,It takes Jinzhongzao tunnel collapse for example,For The specific circumstances of the accident and the influencing factors of collapse,It proposes the corresponding compositive processing measures by using ＂hollow out＂ and the New Austrian Design Theory and Support Structure Balance arch concept.It proved that the collapse processing scheme is reliable and the measure is sufficient and it has the big safety margin.,through the date of in-situ monitoring It proved that the collapse processing scheme is reliable and the measure is sufficient and it has the big safety margin.This project provides advantageous basis for guiding and making collapse processing scheme.It has a certain of the meaning for the construction of similar surrounding rock tunnels.

关 键 词：隧道塌方 新奥法 塌方影响因素 平衡拱 处理措施 空洞法 

分 类 号：U458.3[建筑科学—桥梁与隧道工程]