炉霍县俄日沟泥石流发育特征及防治措施研究

发布时间：2018-06-10 00:55

本文选题：泥石流 + 俄日沟　；参考：《西南交通大学》2015年硕士论文

【摘要】：泥石流是一种主要发生在山区的地质现象,分布广泛,数量众多,发生率高,具有爆发突然、历时短、致灾能力强的特点。我国西南地区地形条件复杂,地表破碎,山地众多,受印度洋季风影响,降雨集中,是我国泥石流的高发地区。应对泥石流造成的巨大损失,应在广泛调查基础上,加强对泥石流孕育条件和发育特征的研究,积极治理,重视多重防治措施的综合应用,加强监测,最终达到防灾减灾的目的。俄日沟为老泥石流沟,1984年发生初次泥石流,之后每年雨季都会发生不同规模的山洪或泥石流,严重威胁沟口居民生命财产安全。本文在详尽的勘查资料基础上,通过搜集、阅读国内外泥石流资料和相关文献,对俄日沟泥石流的形成条件、发育特征和发展趋势进行分析,预测其冲出规模、发生频率及危险范围,提出了合理可行的工程治理方案。在分析俄日沟泥石流的运动特征及成灾模式时,依据实地调查数据,综合考虑“5·12汶川地震”对于俄日沟物源条件、地形地貌的改变和影响,针对俄日沟具体地质环境和气候现状,得出更加吻合事实的结论,为之后的治理方案的提供了有力的理论支撑。针对保护对象全部集中在沟口,确定了“拦排为主、固源为辅”的治理思路。在物源区下游设置三座拦挡坝,起到稳拦上流物源,削减泥石流峰值流量的目的；对于保护对象集中区域沟路宽窄不一,地形复杂,流路不稳的情况,设置导流堤能有效将泥石流导入鲜水河,充分保护下游居民安置点。
[Abstract]:Debris flow is a kind of geological phenomenon mainly occurring in mountainous areas. It is widely distributed, has a large number and has a high incidence rate. It has the characteristics of sudden eruption, short duration and strong ability to cause disasters. The terrain condition of southwest China is complex, the surface is broken, there are many mountains, influenced by the Indian Ocean monsoon, and the rainfall is concentrated, so it is the high occurrence area of debris flow in China. To deal with the huge loss caused by debris flow, we should strengthen the study on the conditions and developmental characteristics of debris flow on the basis of extensive investigation, actively control it, attach importance to the comprehensive application of multiple prevention and control measures, and strengthen monitoring. Finally, the purpose of disaster prevention and mitigation is achieved. The Russian-Japanese gully is the old debris flow gully, the first debris flow occurred in 1984, after every rainy season, there will be different scale mountain torrents or debris flows, which seriously threaten the life and property safety of residents in the gully mouth. On the basis of detailed exploration data, through collecting and reading the data of debris flow at home and abroad and related documents, this paper analyzes the forming conditions, development characteristics and development trend of debris flow in the Russian Rigou, and forecasts its scale of rushing out. The frequency of occurrence and the range of danger are discussed, and a reasonable and feasible project control scheme is put forward. When analyzing the movement characteristics and disaster pattern of debris flow in Russian-Japanese gully, according to the field investigation data, considering the change and influence of "512 Wenchuan earthquake" on the material source condition, landform and geomorphology of Russian-Japanese gully, In view of the specific geological environment and climate present situation of the Russian-Jigou, the conclusion is more consistent with the facts, which provides a strong theoretical support for the future treatment scheme. In view of the protection object all concentrated in the gully mouth, has determined "the blocking and draining primarily, the solid source is auxiliary" the management thought. In the downstream of the source area, three blocking dams are set up to stabilize the upstream material source and reduce the peak flow of debris flow. For the situation of different width, complex topography and unstable flow path in the area of concentrated protection, the area of protection is different in width, complex in topography and unstable in flow path. Setting diversion embankment can effectively lead debris flow into Xianshui River and fully protect the settlement sites of downstream residents.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.23

【参考文献】