湖北兴山县寒溪口桥滑坡稳定性评价及防治对策

发布时间：2018-01-05 07:41

  本文关键词：湖北兴山县寒溪口桥滑坡稳定性评价及防治对策　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

  更多相关文章： 稳定性 摩根斯坦-普莱斯法 利用Geo-studio软件 滑坡治理

【摘要】：管道工程是一种规模庞大的综合性的工程,应用了多种现代科学技术,在世界各国被视为大型的、综合的工业建设项目。若要使长达数千米的管道系统,在工况多变的情况下,长期、高效和安全地连续运行,管道工程的质量须严格符合设计和规范的要求,施工前工作区的地质环境必须处于稳定状态,若是施工区域处于不稳定地带,必须对其进行稳定性评估计算,采取一定的措施保证其稳定性。兴山县寒溪口滑坡位于忠武输气管道工程区附近,对管道工程建设构成一定威胁。本文根据滑坡实地调查、地质钻探以及试验资料,对寒溪口滑坡的发育特征和稳定性进行了分析,并对滑坡治理措施进行了探讨,得到以下结论:(1)根据寒溪口桥滑坡详细调查资料分析,阐述了滑坡空间分布形态、物质组成,变形特征,分析滑坡的成因机制是滑坡体土体松散破碎,遇水极易软化,强度降低,沿软弱面易发生整体失稳滑移,属推动式土质滑坡。(2)采用摩根斯坦-普莱斯法,利用Geo-studio软件对寒溪口桥滑坡在天然工况和暴雨工况下的稳定性进行计算与分析,通过计算可知,天然工况下,寒溪口滑坡处于稳定状态;暴雨工况下,寒溪口滑坡下段处于不稳定~欠稳定状态,其评价结果与滑体稳定性野外宏观判断结果吻合。(3)通过对寒溪口桥滑坡稳定性、稳定性影响因素以滑坡治理方案的研究,经过综合分析后,提出采用“削坡减载+排水沟+挡土墙”方案进行治理,并对各分项工程进行设计。
[Abstract]:Pipeline engineering is a kind of large-scale comprehensive engineering, which applies a variety of modern science and technology, and is regarded as a large, comprehensive industrial construction project in the world. Under the condition of changeable working conditions, long term, efficient and safe continuous operation, the quality of pipeline engineering must strictly meet the requirements of design and specifications, and the geological environment of the working area must be in a stable state before construction. If the construction area is in an unstable zone, it must be evaluated and calculated, and certain measures should be taken to ensure its stability. The Hanxikou landslide in Xingshan County is located near the Zhongwu Gas Pipeline Project area. This paper analyzes the development characteristics and stability of the Hanxikou landslide according to the landslide field investigation, geological drilling and test data. Based on the detailed investigation data of Hanxikou Bridge landslide, the spatial distribution form, material composition and deformation characteristics of landslide are expounded. The cause of formation of landslide is that the landslide soil is loosely broken, easy to soften by water, and its strength is reduced. It is easy to slip along the weak surface, which belongs to the propulsive soil landslide, and adopts the method of Morgenstein-Price method. The stability of Hanxikou Bridge landslide under natural and rainstorm conditions is calculated and analyzed by using Geo-studio software. The results show that the stability of Hanxikou landslide is in a stable state under natural conditions. Under the condition of heavy rain, the lower segment of the Hanxikou landslide is in an unstable to unstable state, and the evaluation results are in agreement with the field macroscopic judgment results of the stability of the slide body. The influence factor of stability is the study of landslide treatment scheme. After comprehensive analysis, the scheme of "cutting slope and load reducing drainage ditch retaining wall" is put forward, and each sub-project is designed.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE973;P642.22
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本文编号：1382212