三峡库区滑坡涌浪特性研究

发布时间：2018-06-26 20:06

本文选题：滑坡涌浪 + 模型试验　；参考：《重庆交通大学》2014年硕士论文

【摘要】：本文对三峡库区滑坡涌浪特性进行研究，为建立完善的滑坡涌浪对航道通航影响的预防评估系统提供坚实基础。在对三峡库区滑坡资料调查和分类的基础上，，针对库区土质滑坡、岩体滑坡和陡岩体滑坡产生的涌浪问题，通过模型试验和理论分析，较为系统和完整的对初始涌浪、沿程涌浪、涌浪的衰减、爬高等涌浪的基本特性进行研究，拟合出相应的经验公式，并进行简单的相关工程实例验证。取得的主要研究成果有：（1）在对三峡库区已发生的滑坡进行岸段调查和资料分析的基础上，对库区滑坡特征进行了全面概述。根据大中型岩体滑坡、陡岩体滑坡和土体滑坡三大类型滑坡各自的特点，分别在弯道和顺直水槽中进行滑坡涌浪的物理模型试验研究和相关涌浪特性分析；（2）对三大类型滑坡涌浪进行初始和沿程涌浪基本特性分析；对涌浪的影响因素进行数学归纳和分析，得出了影响因素的主次关系；通过无量纲回归分析的方法，建立了初始涌浪高度的经验计算公式；（3）运用多元线性回归分析方法分别得出了岩体滑坡涌浪、陡岩体滑坡涌浪和土体滑坡涌浪的波高衰减特点及其相应的波高衰减系数计算公式；（4）着重分析了岩体滑坡涌浪作用下库岸爬高的主要特性及各因素的影响，给出了涌浪作用下最大爬高的经验公式；给出土体和岩体滑坡的爬高计算公式；（5）结合清江大堰塘岩体滑坡、长江鸡扒子土体滑坡、长江链子崖陡岩体滑坡三大类型滑坡实例，对产生的初始涌浪高度和爬高进行计算验证，结果基本吻合，可推广运用到相关工程中。
[Abstract]:In this paper, the characteristics of landslide surge in the three Gorges Reservoir area are studied, which provides a solid foundation for the establishment of a sound evaluation system for the influence of landslide surge on navigation channel. Based on the investigation and classification of landslide data in the three Gorges Reservoir area, aiming at the problems of surge caused by soil landslide, rock mass landslide and steep rock mass landslide in the reservoir area, through model test and theoretical analysis, the initial surge is systematically and completely analyzed. The basic characteristics of inrush along the course, the attenuation of surge and the climb are studied, the corresponding empirical formulas are fitted out, and a simple engineering example is given to verify the characteristics of the surge. The main research results are as follows: (1) based on the investigation and data analysis of the landslide in the three Gorges Reservoir area, the characteristics of landslide in the reservoir area are summarized. According to the characteristics of the landslide of large and medium rock mass, steep rock mass and soil landslide, the physical model test of landslide surge and the analysis of related surge characteristics are carried out in the bend and straight flume respectively. (2) the basic characteristics of the three types of landslide surge are analyzed, the influencing factors are summarized and analyzed mathematically, the primary and secondary relationships of the influencing factors are obtained, and the method of dimensionless regression analysis is used to analyze the primary and secondary characteristics of the three types of landslide surges. An empirical formula for calculating the initial surge height is established. (3) the landslide surge of rock mass is obtained by using multiple linear regression analysis. The attenuation characteristics of wave height and the corresponding formula of wave height attenuation coefficient of steep rock mass landslide surge wave and soil landslide surge wave are analyzed. (4) the main characteristics and the influence of various factors on the reservoir shore height under the action of rock landslide surge wave are analyzed. The empirical formula of maximum climbing under the action of surge wave, the calculation formula of soil mass and rock mass landslide, (5) combining with the landslide of Dayantang rock mass in Qingjiang River, the landslide of Jizaizi soil of the Yangtze River, are given. The three types of landslides in Lianziya steep rock mass of the Yangtze River are calculated and verified by the calculation of the initial surge height and climbing height. The results are basically consistent and can be applied to relevant projects.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV221.2;TV139.23

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