川藏交通廊道滑坡崩塌灾害对道路工程的危害方式分析

发布时间：2018-03-25 05:08

  本文选题：空间分布　切入点：危害方式　出处：《工程地质学报》2017年05期

【摘要】：为对川藏交通廊道内道路工程的选定线及安全建设和运营提供科学决策及防灾减灾依据,在对拟建川藏铁路和高速公路沿线滑坡崩塌灾害进行系统野外调查和遥感解译的基础上,查明了川藏交通廊道康定至林芝段滑坡崩塌的空间分布特征和潜在危害情况,结合已有川藏公路沿线崩滑灾害的危害特征和危害方式,对该段廊道内滑坡崩塌灾害的可能危害方式进行了深入细致地归纳、分析和总结。研究结果表明:川藏交通廊道康定至林芝段共发育滑坡崩塌灾害488处,其中滑坡262处,崩塌(含溜砂坡)226处;对拟建道路工程存在潜在危害或影响的崩滑灾害共有148处,滑坡有89处,崩塌(含溜砂坡)59处。崩塌滑坡灾害对道路工程的危害方式主要有:(1)滑坡崩塌威胁隧道及其进出口安全;(2)滑坡崩塌推移、掩埋、损毁道路工程;(3)滑坡崩塌威胁站场、车站安全;(4)滑坡崩塌堵江断道、淹没道路工程;(5)滑坡崩塌转化为泥石流、洪水等灾害链危害道路工程;(6)崩塌、溜砂坡冲击、扰动、掩埋道路工程。
[Abstract]:It provides scientific decision making and disaster prevention and mitigation basis for the selection line, safety construction and operation of the road engineering in Sichuan-Tibet traffic corridor. On the basis of systematic field investigation and remote sensing interpretation of landslide collapse disaster along the proposed Sichuan-Tibet railway and expressway, the spatial distribution characteristics and potential hazards of landslide collapse in the section of Sichuan-Tibet traffic corridor from Kangding to Linzhi are found out. Combined with the hazard characteristics and hazard mode of landslide disaster along the existing Sichuan-Tibet highway, the possible hazard modes of landslide collapse disaster in this section of corridor are summarized deeply and meticulously. Analysis and summary. The results show that there are 488 landslides in the section of Sichuan-Tibet traffic corridor from Kangding to Linzhi, of which 262 are landslides and 226 are landslips. There are 148 landslides and 89 landslides that have potential hazards or impacts on the proposed road projects. Collapse (including 59 places of slide slope. The main hazard mode of landslide disaster to road engineering is: 1) landslide collapse threatens tunnel and its entrance and exit safety (2) landslide collapse goes on, buries, destroys road engineering and threatens the site of landslide collapse. The landslide collapses and blocks the river broken road, submerges the road engineering to transform the landslide collapse into the debris flow, the flood and so on disaster chain endangers the road engineering to collapse, the sand slope impact, the disturbance, buries the road project.
【作者单位】： 中国科学院山地灾害与表生过程重点实验室;中国科学院、水利部成都山地灾害与环境研究所;
【基金】：中国科学院科技服务网络计划STS项目(KFJ-EW-STS-094) 国家重点基础研究发展计划(973计划)(2015CB452704)资助
【分类号】：P642.2;U412.22
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本文编号：1661660