汪发武, 陈也, 刘伟超, 等. 2022. 藏东南高位远程滑坡动力学特征及研究难点[J]. 工程地质学报, 30(6): 1831-1841. doi: 10.13544/j.cnki.jeg.2022-0734.
    引用本文: 汪发武, 陈也, 刘伟超, 等. 2022. 藏东南高位远程滑坡动力学特征及研究难点[J]. 工程地质学报, 30(6): 1831-1841. doi: 10.13544/j.cnki.jeg.2022-0734.
    Wang Fawu, Chen Ye, Liu Weichao, et al. 2022. Characteristics and challenges to dynamics of long-runout landslides with high-altitude in southeast Tibet[J]. Journal of Engineering Geology, 30(6): 1831-1841. doi: 10.13544/j.cnki.jeg.2022-0734.
    Citation: Wang Fawu, Chen Ye, Liu Weichao, et al. 2022. Characteristics and challenges to dynamics of long-runout landslides with high-altitude in southeast Tibet[J]. Journal of Engineering Geology, 30(6): 1831-1841. doi: 10.13544/j.cnki.jeg.2022-0734.

    藏东南高位远程滑坡动力学特征及研究难点

    CHARACTERISTICS AND CHALLENGES TO DYNAMICS OF LONG-RUNOUT LANDSLIDES WITH HIGH-ALTITUDE IN SOUTHEAST TIBET

    • 摘要: 藏东南地区地理位置特殊、地形地貌独特、水力资源丰沛、战略地位重要,规划建设有诸多重大战略性基础设施和建设工程。受构造性隆升、地震活动、海洋性冰川、立体气候和人类工程活动等内外动力因素影响,该区域内密集发育高位远程滑坡地质灾害,严重威胁重大工程的安全运营。高位远程滑坡具有隐蔽性强、冲击力大、致灾范围广等特点,使得当前的研究面临“起滑机制不清、灾变机理不明、运动预测不准”的挑战,亟需解决复杂地质环境下高位远程滑坡具有的超高起滑势能、超强运动特性和超大致灾能力3个方面的科学问题,有待揭示藏东南地区孕灾环境特征和滑坡分布规律、高海拔脆性岩体起滑机制、高位崩滑体运动形态转化机制和崩滑体流态化远程运动机制等研究难点。基于这些成果构建的高位远程滑坡动力学将有助于指导藏东南重大工程规划建设中地质灾害风险防范的理论依据,对藏东南地区可持续发展具有重要的现实意义。

       

      Abstract: Southeast Tibet is an important strategic region in China,because of its special geographical location,rugged topography and abundant hydraulic power resources. Several major projects were planned and constructed in southeast Tibet. Affected by internal and external dynamic geological factors such as tectonic uplift,seismic activities,marine glaciers,stereoscopic climate and engineering construction activities,long-runout landslides with high-altitude occurred in this region intensively. Such geological disasters seriously threaten the safety and operation of major projects. Due to characteristics of high abruptness,large impact force and wide scope of disaster,it is difficult to explain the initiation mechanism,reveal the landslide dynamics and predict the landslide movement. It is necessary to break through the important scientific problems. These problems include (1) the characteristics of disaster-inducing environment,(2)the landslide distribution discipline in southeast Tibet,(3)the initiation mechanism of brittle rock with high-altitude,(4)the mechanism of motion style transformation and (5)the mechanism of landslide mass fluidization. It is urgent to establish the dynamics of long-runout landslides with high-altitude,which can provide a theoretical basis for geological disaster risk prevention and guide the planning and construction of major projects. Advancing relevant research is of great practical significance to the sustainable development of southeast Tibet.

       

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