金沙江奔子栏水源地库区单体滑坡稳定性智能评估及滑坡灾害区域风险分析

发布时间：2018-06-17 22:58

本文选题：滑坡 + 稳定性分析　；参考：《吉林大学》2015年博士论文

【摘要】：滑坡灾害是世界上发生最为频繁的灾害之一，世界各国每年因滑坡灾害造成的经济损失近百亿美元，，致数千人伤亡，因此受到国际社会的广泛关注和高度重视。我国滑坡灾害发生密度大、频率高、分布范围广泛，已成为地质灾害中的一个重要灾种，对人民生命和国家财产构成重大威胁，严重制约我国国民经济发展。我国西南地区江河密布，降水集中，地形垂直落差大，是我国水资源最丰富的区域。同时，西南地区处于青藏高原的东侧地带，受青藏高原快速隆升的影响，该区山高坡陡，河床深切，地质条件复杂，构造运动活跃，地震活动频繁，生态环境脆弱，高地应力集中，风化作用强烈，岩体结构破碎，独特的区域地质背景使得滑坡灾害频发，给水电工程安全带来诸多安全隐患。本文以2010年水利部公益性行业科研专项经费项目（《西南大型水库库岸滑坡灾害影响与对策研究》，项目编号：201001008）和国家自然科学基金（“快速隆升典型河段复杂结构岩体灾变与水库工程活动互馈机理研究”，项目批准号：41330636）为依托，选取拟建的滇中引水工程奔子栏水源地库区为研究区，以库区内发育的24处典型滑坡为研究对象，分析滑坡发育的空间分布规律和成因变形机制，评估单体滑坡的稳定性，对滑坡灾害区域风险进行区划分析，为保障研究区水电工程正常安全实施建设提供科学的依据。针对以上研究目标，本文设置七章：第1章为绪论，介绍了选题依据和研究意义，总结了滑坡灾害的国内外研究现状，并介绍了论文的主要内容和技术路线以及论文的创新点。第2章介绍了滇中引水工程项目概况，并从自然地理、地形地貌、气象水文、地层岩性、地质构造和地震活动几个方面论述了奔子栏水源地库区滑坡发育的地质背景。第3章重点介绍了库区滑坡自身特征、空间分布规律和成因变形机制。第4章介绍了单体滑坡稳定性评价指标体系的构建，并对各个典型滑坡进行智能评估。第5章详细论述了区域滑坡灾害危险性评估指标体系的构建、指标权重确定的方法以及危险性区划模型，对研究区进行区域灾害危险性分区。第6章进行区域滑坡灾害易损性和风险性区划分析。第7章总结了论文得出的主要结论，对下一步研究工作提出建议。需要特别说明的是，在论文写作过程中，作者深感时间短暂，加之水平有限，经验不足，论文中错漏和不妥之处在所难免，敬请各位专家学者批评指正。
[Abstract]:Landslide disaster is one of the most frequent disasters in the world. The economic losses caused by landslide disasters in the world are nearly 10 billion US dollars each year, causing thousands of casualties. Landslide disasters in China have a large density, high frequency and wide distribution, and have become an important disaster in geological disasters, which pose a major threat to people's lives and national property, and seriously restrict the development of our national economy. The southwest of China is rich in water resources because of its dense rivers, concentrated precipitation and large vertical topographic drop. At the same time, the southwest region is located on the eastern side of the Qinghai-Tibet Plateau. Affected by the rapid uplift of the Qinghai-Tibet Plateau, the mountains in the region are steep and steep, the river bed is deep, the geological conditions are complex, the tectonic movement is active, the seismic activity is frequent, and the ecological environment is fragile. High ground stress, strong weathering, broken rock mass structure and unique regional geological background make landslide disasters occur frequently, which brings many safety risks to hydropower engineering. In this paper, the project of special research fund for public welfare industry of Ministry of Water Resources in 2010 ("study on influence and Countermeasure of landslide disaster in the Bank of Southwest large Reservoir", Project No.: 201001008) and National Natural Science Foundation ("complex knot of typical reach of rapid uplift") Study on the mechanism of mutual feeding between rock mass catastrophe and reservoir engineering activity ", Based on the project approval number: 41330636, the proposed water source area of Pengzilan water diversion project in central Yunnan is selected as the study area, and the spatial distribution law and genetic deformation mechanism of the landslide development are analyzed with 24 typical landslides developed in the reservoir area as the research object. To evaluate the stability of single landslide and to analyze the regional risk of landslide hazard, the scientific basis is provided for the normal and safe construction of hydropower projects in the study area. In view of the above research goal, this paper sets up seven chapters: the first chapter is the introduction, introduced the selected topic basis and the research significance, summarized the domestic and foreign research present situation of the landslide disaster, and introduced the main content, the technical route and the innovation point of the paper. The second chapter introduces the general situation of the water diversion project in central Yunnan, and discusses the geological background of landslide development in the reservoir area of Pendzilan reservoir area from the aspects of natural geography, topography, meteorology and hydrology, stratigraphic lithology, geological structure and seismic activity. In chapter 3, the characteristics, spatial distribution and deformation mechanism of landslide in reservoir area are introduced. Chapter 4 introduces the construction of single landslide stability evaluation index system and the intelligent evaluation of each typical landslide. Chapter 5 discusses in detail the construction of regional landslide hazard assessment index system, the method of determining the index weight and the risk zoning model, and carries out the regional disaster risk zoning in the study area. Chapter 6 analyzes the vulnerability and risk of regional landslide hazard. Chapter 7 summarizes the main conclusions of the paper and puts forward some suggestions for the next research work. In particular, in the process of writing the paper, the author feels that the time is short, the level is limited, the experience is not enough, the mistakes and mistakes in the paper are inevitable, please ask all experts and scholars to criticize and correct them.
【学位授予单位】：吉林大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：P642.22

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