泥石流地区新建高速公路边坡防护技术研究

发布时间：2018-05-28 12:38

本文选题：公路 + 泥石流　；参考：《重庆交通大学》2015年硕士论文

【摘要】：公路作为一种重要的基础工程,连接着各个地区,在文化交流、经济发展、思想进步、民族团结等方面都起着重要的作用。近年来,西南部地区经济高速发展,人口流动量大,能源物质大量的输入输出,对各种交通运输工程的需求量特别大,公路在其中承担着重要的角色。西南部山区是我国公路泥石流的高发区,尤其是项目所在的东川地区,很多山体风化严重,岩层裸露,植被覆盖率低,松松破碎物质储量丰富,降雨集中,多暴雨,是孕育泥石流的天堂。区域内存在着数以百计的泥石流,其中不乏规模大、爆发频率高、危害性严重的泥石流,泥石流的存在对区域内的公路工程建设有着很大的影响。本论文依托国道G85昆明市功山至东川高速公路勘察设计项目开展研究,以边坡防护设计为目标,从研究泥石流入手。在公路设计阶段,结合公路工程线位和穿越方式,进行边坡防护设计和边坡防护技术比选,考虑项目区域内泥石流对公路工程的影响。首先分析项目所在区域内泥石流的形成因素和致灾特点,总结泥石流基本分区和分布规律。然后比选国内外现有的评价模型,选择适用于本项目的模糊层次综合评价法,根据已有资料调整参数和取值,对泥石流危险性进行评价。泥石流流量包括洪水流量和输送携带的固体物质总量,通过计算泥石流洪峰流量可以推算出一次泥石流总量,泥石流总量是进行泥石流影响范围预测的一个重要参数,可以预测出泥石流堆积区的形态。最后立足于防治一体化,结合泥石流的四种致灾模式,针对性的提出直接的防治技术,并把对泥石流的防治作为间接措施,对其进行综合治理。通过本文研究,把泥石流作为影响高速公路边坡防护的重要因素,提出泥石流危险性和影响范围对公路边坡防护设计的指导关系,为实际工程中防护设计提供参考,并建立以公路边坡防护为目的的防治一体化综合方案。
[Abstract]:As an important basic project, highway connects various regions and plays an important role in cultural exchange, economic development, ideological progress, national unity and so on. In recent years, with the rapid development of economy, large population flow, large input and output of energy, the demand for various transportation projects is especially large, and the highway plays an important role in it. The southwest mountainous area is a high incidence area of highway debris flow in China, especially in Dongchuan area where the project is located. Many mountain bodies are weathered seriously, rock layers are exposed, vegetation coverage is low, pine is abundant in broken material reserves, rainfall is concentrated and heavy rain is heavy. It is a paradise for mudslides. There are hundreds of debris flows in the region, including debris flow with large scale, high frequency of eruption and serious harmfulness. The existence of debris flow has a great influence on the construction of highway projects in the region. Based on the investigation and design project of G85 Kunming highway from Gongshan to Dongchuan, this paper takes slope protection design as the goal and starts with the study of debris flow. In the stage of highway design, the slope protection design and slope protection technology are compared and selected, considering the influence of debris flow in the project area on highway engineering. Firstly, the forming factors and disaster-causing characteristics of debris flow in the project area are analyzed, and the basic zoning and distribution of debris flow are summarized. Then compared with the existing evaluation models at home and abroad, the fuzzy level comprehensive evaluation method, which is suitable for this project, is selected to evaluate the risk of debris flow according to the existing data and adjust the parameters and values. The flow of debris flow includes the total amount of flood discharge and solid material transported. The total amount of debris flow can be calculated by calculating the Hong Feng discharge of debris flow, and the total amount of debris flow is an important parameter to predict the influence range of debris flow. The shape of debris flow accumulation area can be predicted. Finally, based on the integration of prevention and control, combined with the four modes of debris flow, the paper puts forward the direct prevention and control technology, and takes the prevention and control of debris flow as an indirect measure to comprehensively control the debris flow. Through the research of this paper, taking debris flow as an important factor affecting highway slope protection, the paper puts forward the guiding relationship between debris flow hazard and influence scope to highway slope protection design, and provides a reference for actual engineering protection design. A comprehensive scheme of prevention and control is established for the purpose of highway slope protection.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U417.1;P642.23

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