【摘要】 我国是一个多山的国家。随着高速公路的迅猛发展,在山丘区修筑高速公路,由于线路及地形的限制,必然伴随着大量公路隧道的出现。小净距隧道是目前公路隧道中最常见的一种型式。在我国目前还处于研究和发展阶段。论文在现有单洞隧道围岩破坏模式分析的基础上,开展了小净距双洞公路隧道围岩破坏模式的研究。通过文献综述、现场量测以及数值分析成果,归纳总结了小净距隧道的5种典型破坏模式:挤压破坏、拉伸破坏、中夹岩柱剪切破坏、爆破震动破坏及复合型破坏。针对不同的破坏模式。论文详细阐述其破坏规律和特点,以便在设计中人们能够事先知道其薄弱环节,在施工时能够及时采取有效的处理措施,从而确保整个隧道施工和运营的安全。更多还原

【Abstract】 China is a mountainous country,with the quickly development of highway, highway tunnels necessory because of the restrictions of terrain and line,.neighburhood tunnels is the most common types of highway tunnels,is under research and development phase.This paper is based on the analysis of failure mode of single tunnel,develop the study of the neighburhood two tunnels’ failure mode.and classifies its failure mode into five typical models according to the conclusion of literature summarize、measurement and numerical calculation as follows:①failure mode of extrusion;②failure mode of extended;③failure mode of shear for middle rock pillar;④failure of blasting vibration;⑤failure of composite type.This article particularly expatiate on the characteristics in allusion to different failure mode,so designer can advanced realize the weakness and take effective measures in the process of construction.更多还原