小净距公路(双洞)隧道围岩破坏模式研究
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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。
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.
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.
引文
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[2]朱玮,许劲松.破裂结构围岩破坏模式的模糊数学分析[J].大连理工大学学报,1990,30(2):221-226.
[3]赵洪波.围岩破坏模式识别的支持向量机研究[J].岩土力学,2005,26(2):235-238.
[4]高玮,杨明成,郑颖人.隧道围岩破坏模式的进化神经网络识别[J].岩土力学,2002,23(6):691-694.
[5]赵兴东,段进超,唐春安,等.不同断面形式隧道破坏模式研究[J].岩石力学与工程学报,2007,23(S2):4921-4925.
[6]关宝树.隧道工程设计要点集[M].北京:人民交通出版社,2003.
[7]王明年.邻近隧道施工对既有隧道的影响[D].成都:西南交通大学,2002.
[8]刘惠.招宝山超过小净距双线隧道的安全控爆研究[J].工程爆破,2003,6(1):49-55.
[9]姚勇,何川,晏启祥,等.董家山隧道小净距段爆破控制的数值模拟[J].岩土力学,2004,25(S0):501-506.
[10]姚勇,何川,晏启祥,等.董家山隧道小净距段爆破控制研究[J].公路,2005,(11):212-216.
[11]刘慧.邻近爆破对既有隧道影响的研究[D].北京:铁道部科学研究院,1998.
[12]阳生权.小线间距施工隧道爆破地震影响下既有隧道围岩线性动力分析[J].工程爆破,1998,4(1):1-6.
[13]阳生权,刘宝琛.小间距平行隧道爆破震动加速度测试[J].爆破器材,1999,28(6):1-4.
[14]彭道富,李忠献,杨年华.近距离爆破对既有隧道的振动影响[J].中国铁道科学,2005,26(4):73-76.
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