高烈度地震频发山区泥石流对成兰铁路的影响和防治对策
|
摘要
成兰铁路沿线,近百年经历了3次大地震,特别是2008年"5·12"汶川地震作用非常明显,由于崩塌、错落、危岩落石、滑坡等不良地质,形成了众多泥石流沟。泥石流具有多发性,破坏力强,对铁路设计影响巨大。文章根据各段线路泥石流成因和分布特征,采取了不同的防治对策,对于大型泥石流,选线阶段采取绕避或隧道深埋躲避通过;对于中小型泥石流沟,采取大跨桥梁跨越、拦挡、疏导、设置防护墩、预警系统等综合整治工程措施,降低综合投资,减少安全隐患,确保铁路安全。
Along Chengdu-Lanzhou railway, three severe earthquakes occurred in the recent hundred years, especially "5·12" Wenchuan great earthquake in 2008 induced many unfavorable geologic phenomena such as collapse, dangerous rock, rockfall and landslide as well as debris flow, which possesses the characteristics of strong damaging force with high frequency, having adverse influence on railway design. According to the cause and distribution characteristics of debris flow, different prevention measures are put forward in this paper, for the big debris flow, the route selection adopts detouring or deeply buried tunnel; for the small and medium-sized debris flow, such comprehensive engineering measures as long-span bridge for crossing, blocking and dredging, setting protective pier and pre-warning system, etc. to reduce the overall investment, decrease potential safety hazard and ensure the railway safety.
Along Chengdu-Lanzhou railway, three severe earthquakes occurred in the recent hundred years, especially "5·12" Wenchuan great earthquake in 2008 induced many unfavorable geologic phenomena such as collapse, dangerous rock, rockfall and landslide as well as debris flow, which possesses the characteristics of strong damaging force with high frequency, having adverse influence on railway design. According to the cause and distribution characteristics of debris flow, different prevention measures are put forward in this paper, for the big debris flow, the route selection adopts detouring or deeply buried tunnel; for the small and medium-sized debris flow, such comprehensive engineering measures as long-span bridge for crossing, blocking and dredging, setting protective pier and pre-warning system, etc. to reduce the overall investment, decrease potential safety hazard and ensure the railway safety.
引文
[1]四川阿坝藏族羌族自治州地方志编纂委员会.阿坝州志[K].成都:民族出版社,1994.Local Chronicles compilation committee of Aba Tibetan and Qiang au-tonomous prefecture,chorography of Aba Autonomous Prefecture[K].Sichuan:Ethnic Publishing House,1994.
[2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,中铁二院工程集团有限责任公司.成兰铁路泥石流专题研究报告[R].成都:成都理工大学地质灾害防治与地质环境保护国家重点实验室,中铁二院工程集团有限责任公司,2009.The State Key Laboratory for Geological Disaster Prevention and Geo-logical Environmental Protection of Environmental Protection,Cheng-du University of Technology,China Railway Eryuan Group Co.,Ltd..Monographic Study Report of Debris Flow on Chengdu-Lanzhou Railwya[R].The State Key Laboratory for Geological Disaster Pre-vention and Geological Environmental Protection of Environmental Pro-tection,Chengdu University of Technology,China Railway Eryuan Group Co.,Ltd.
[3]四川赛思特科技有限责任公司.新建成都至兰州铁路地震安全性评价报告[R].成都:四川赛思特科技有限责任公司,2010.Sichuan Saisite Technology Co.,ltd.,Seismic Safety Evaluation Re-port of New Chengdu-Lanzhou Railway[R].Chengdu:Sichuan Saisite Technology Co.,ltd.2010.
[4]铁道部第三勘测设计院.铁路工程设计技术手册·桥渡水文[M].北京:中国铁道出版社,1993.The Third Railway Survey and Design Institute.Technical Manual for Design of Railway Engineering.Bridge Hydrology[M].Beijing:Chi-na Railway Publishing House,1993.
[5]GB50021-2001岩土工程勘察规范[S].GB50021-2001Code for Investigation of Geotechnical Engineering[S].
[6]TB10017-99铁路工程水文勘测设计规范[S].TB10017-99Code for Survey and Design on Hydrology of Railway Engineering[S].
[7]DZ/T0239-2004泥石流灾害防治工程设计规范[S].DZ/T0239-2004Code for Design of Prevention Engineering for Debris Flow Disaster[S].
[2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,中铁二院工程集团有限责任公司.成兰铁路泥石流专题研究报告[R].成都:成都理工大学地质灾害防治与地质环境保护国家重点实验室,中铁二院工程集团有限责任公司,2009.The State Key Laboratory for Geological Disaster Prevention and Geo-logical Environmental Protection of Environmental Protection,Cheng-du University of Technology,China Railway Eryuan Group Co.,Ltd..Monographic Study Report of Debris Flow on Chengdu-Lanzhou Railwya[R].The State Key Laboratory for Geological Disaster Pre-vention and Geological Environmental Protection of Environmental Pro-tection,Chengdu University of Technology,China Railway Eryuan Group Co.,Ltd.
[3]四川赛思特科技有限责任公司.新建成都至兰州铁路地震安全性评价报告[R].成都:四川赛思特科技有限责任公司,2010.Sichuan Saisite Technology Co.,ltd.,Seismic Safety Evaluation Re-port of New Chengdu-Lanzhou Railway[R].Chengdu:Sichuan Saisite Technology Co.,ltd.2010.
[4]铁道部第三勘测设计院.铁路工程设计技术手册·桥渡水文[M].北京:中国铁道出版社,1993.The Third Railway Survey and Design Institute.Technical Manual for Design of Railway Engineering.Bridge Hydrology[M].Beijing:Chi-na Railway Publishing House,1993.
[5]GB50021-2001岩土工程勘察规范[S].GB50021-2001Code for Investigation of Geotechnical Engineering[S].
[6]TB10017-99铁路工程水文勘测设计规范[S].TB10017-99Code for Survey and Design on Hydrology of Railway Engineering[S].
[7]DZ/T0239-2004泥石流灾害防治工程设计规范[S].DZ/T0239-2004Code for Design of Prevention Engineering for Debris Flow Disaster[S].
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心