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论文摘要

青藏高原重大滑坡动力灾变与风险防控关键技术研究

Investigation on the Catastrophic Mechanism and Risk Control Measures of Major Landslides in Tibetan Plateau

作者:邓建辉(四川大学 水力学与山区河流开发保护国家重点实验室 水利水电学院, 四川 成都 610065);戴福初(北京工业大学 建筑工程学院, 北京 100023);文宝萍(中国地质大学(北京) 水资源与环境学院, 北京 100083);姚鑫(中国地质科学院 地质力学研究所, 北京 100086)

Author:DENG Jianhui(State Key Lab. of Hydraulics and Mountain River Eng., College of Water Resource and Hydropower, Sichuan Univ., Chengdu 610065, China);DAI Fuchu(College of Architecture and Civil Eng., Beijing Univ. of Technol., Beijing 100023, China);WEN Baoping(School of Water Resources and Environment, China Univ. of Geosciences (Beijing), Beijing 100083, China);YAO Xin(Inst. of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100086, China)

收稿日期:2019-07-18          年卷(期)页码:2019,51(5):1-8

期刊名称:工程科学与技术

Journal Name:Advanced Engineering Sciences

关键字:青藏高原;滑坡;高速远程滑坡;堵江滑坡;动力灾变;防控技术

Key words:Tibetan Plateau;landslide;high-speed and long runout landslide;landslide dam;catastrophic mechanism;control measure

基金项目:国家重点研发计划项目(2018YFC1505000)

中文摘要

青藏高原是全球地质环境最脆弱的地区之一,地质条件复杂,地壳隆升、高地应力、地震、冻融、暴雨等内外动力强烈,重大滑坡频发,链生灾害剧烈。滑坡问题已严重影响川藏铁路、水能资源开发等国家重大工程建设,威胁区域居民人身与财产安全。2018年金沙江上游连续发生的白格“10.10”和“11.3”滑坡堵江事件即为典型案例。然而,目前理论上对青藏高原重大滑坡的孕灾环境与成灾机制认识不清,技术上不能对重大滑坡进行早期识别和有效风险防控,不能有效地为该地区重大滑坡灾害的灾前防控、灾后救灾提供科技支撑。针对上述问题,以地质条件最复杂、内外动力作用最强烈、滑坡灾害最频繁的青藏高原东南三江流域为重点研究区,采用多学科综合交叉融合的方法,从滑坡的成因机制入手,破解其链生演化难题,提出早期识别与风险防控体系;通过解决青藏高原重大滑坡孕育的内外动力耦合作用机制、青藏高原重大滑坡及其灾害链的动力学机制等科学问题,以及青藏高原重大滑坡的遥感早期识别与监测、基于重大滑坡动力过程的动态风险评估与防控等技术问题,最终形成青藏高原重大滑坡成因理论、防控技术和综合减灾技术示范。

英文摘要

Tibetan Plateau is one of the districts with the most susceptible geo-environments. The district is characterized by its complex geology, strong endogenic and exogenic geological processes as crustal uplift, high in-situ stresses, earthquakes, repeating ground freeze and thaw, intensive precipitation etc., frequent landslides and chained disasters. Landslides have become a serious problem affecting the construction of major engineering project as Tibet-Sichuan railway line and regional hydropower stations, and also menacing the safety of local residents and their living facilities. On October 10th and November 3rd, 2018, landslides, damming the upper reach of Jinsha River at Baige village, are two typical cases. However, for the research of major landslides in Tibetan Plateau, theoretically it’s not quite clear that how they happen and what is their catastrophic mechanism; technically it is still under development that how to effectively recognize and control the disasters in advance. That is, current theory and technique cannot provide efficient support for pre-disaster control and post-disaster relief works. The three-river area (Jinsha River, Lancang River and Nu River) is located on the southeast edge of Tibetan Plateau and is characterized by complex geology, strong endogenic and exogenic geological processes and frequent landslide disasters, making it selected as the key area for investigation. Multidisciplinary endeavor will be used in the investigation, starting from the genesis mechanism of landslides, revealing the evolution of the chained disasters, then suggesting techniques for early recognition and risk control of landslide disasters. Through solving the scientific problems of major landslides in Tibetan Plateau such as the coupling mechanism of endogenic and exogenic processes, the dynamic mechanism of the disaster and its chains, and the technical challenges as remote sensing-based early recognition and monitoring, kinematic process-based risk evaluation and control techniques, the project finally demonstrates the application of the above theory and techniques by typical case histories of disaster reduction.

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