简阳雷打石滑坡稳定性评价及整治措施研究
发布时间：2019-01-09 19:09
【摘要】：滑坡是山区中既常见又极具危害性的地质灾害,是一个非线性的较复杂的系统。随着近年来相关学科的发展,出现了不少关于滑坡稳定性的计算方法和对影响滑坡稳定的各种因素的分析方法。对滑坡稳定性的定性分析与定量分析后,提出合理的滑坡防治方案建议,对滑坡治理方案进行风险评价,均是边坡(滑坡)整治工程的重要课题。本文以筒阳雷打石滑坡为研究对象,通过现场勘察和理论分析,针对其滑坡各项特征和稳定性影响因素进行了详细的说明与分析,研究其破坏成因机理,并以稳定性定性分析与稳定性定量分析两个角度对治理前的滑坡稳定性进行评价,在此基础上,给出了合理的防治工程方案建议,对滑坡的整治措施方案效果进行了稳定性评估研究。首先运用全面的现场调查和理论分析手段,对滑坡基本特征、变形破坏模式、影响稳定性主要因素进行分析,用工程地质类比等方法定性分析了滑坡稳定性,得知边坡目前仍处于残余变形状态。紧接着采用传递系数法、有限元法对滑坡进行了稳定性定量分析,分析结果为雷打石滑坡在暴雨、地震等因素的作用下可能发生失稳。综合稳定性分析结果,对三岔湖旅游快速通道修复方案(高填方多孔拱涵)在应急治理工程未失效和已失效的情况下进行稳定性系数计算,进行了治理效果风险评估。结论对雷打石滑坡防治工程的设计、施工均有很实际的指导意义。
[Abstract]:Landslide is a common and dangerous geological hazard in mountainous area, and it is a nonlinear and complex system. With the development of related disciplines in recent years, there have been many methods for calculating landslide stability and analyzing various factors affecting landslide stability. After the qualitative analysis and quantitative analysis of landslide stability, it is an important subject of slope (landslide) remediation project to put forward reasonable landslide prevention and control plan and evaluate the risk of landslide control scheme. In this paper, based on the field investigation and theoretical analysis, the characteristics of the landslide and the influencing factors of its stability are explained and analyzed in detail, and the mechanism of its failure is studied. On the basis of stability analysis and quantitative analysis of stability, the landslide stability before treatment is evaluated. On this basis, reasonable prevention and control project proposals are given. The stability evaluation of the landslide regulation scheme was carried out. Firstly, by means of comprehensive field investigation and theoretical analysis, the basic characteristics of landslide, the mode of deformation and failure, the main factors affecting stability are analyzed, and the stability of landslide is qualitatively analyzed by means of engineering geological analogy. It is known that the slope is still in the state of residual deformation. Then the transfer coefficient method and the finite element method are used to analyze the stability of the landslide. The results show that the landslide may be unstable under the action of rainstorm and earthquake. Based on the results of stability analysis, the stability coefficient of Sancha Lake tourist Expressway Restoration Scheme (high fill porous arch culvert) was calculated without or without failure of emergency treatment project, and the risk of control effect was evaluated. Conclusion the design and construction of Leidashi landslide prevention project are of practical significance.
【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】：P642.22
[Abstract]:Landslide is a common and dangerous geological hazard in mountainous area, and it is a nonlinear and complex system. With the development of related disciplines in recent years, there have been many methods for calculating landslide stability and analyzing various factors affecting landslide stability. After the qualitative analysis and quantitative analysis of landslide stability, it is an important subject of slope (landslide) remediation project to put forward reasonable landslide prevention and control plan and evaluate the risk of landslide control scheme. In this paper, based on the field investigation and theoretical analysis, the characteristics of the landslide and the influencing factors of its stability are explained and analyzed in detail, and the mechanism of its failure is studied. On the basis of stability analysis and quantitative analysis of stability, the landslide stability before treatment is evaluated. On this basis, reasonable prevention and control project proposals are given. The stability evaluation of the landslide regulation scheme was carried out. Firstly, by means of comprehensive field investigation and theoretical analysis, the basic characteristics of landslide, the mode of deformation and failure, the main factors affecting stability are analyzed, and the stability of landslide is qualitatively analyzed by means of engineering geological analogy. It is known that the slope is still in the state of residual deformation. Then the transfer coefficient method and the finite element method are used to analyze the stability of the landslide. The results show that the landslide may be unstable under the action of rainstorm and earthquake. Based on the results of stability analysis, the stability coefficient of Sancha Lake tourist Expressway Restoration Scheme (high fill porous arch culvert) was calculated without or without failure of emergency treatment project, and the risk of control effect was evaluated. Conclusion the design and construction of Leidashi landslide prevention project are of practical significance.
【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】：P642.22
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