大夫山森林公园G178电塔下部山体滑坡危险性分析与稳定性评价

发布时间：2018-06-14 08:19

本文选题：大夫山 + 滑坡　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：近期,大夫山森林公园西侧山体上发生滑坡,滑坡分南东和北西两个变形体,北西变形体上部有一高压电塔,滑坡下部为禺山西路和东新高速,目前滑坡仍有继续扩展趋势,给山体上部电塔及下方道路与行人造成了极大的安全隐患。因此对大夫山森林公园滑坡进行危险性评价和稳定性分析是极为必要的。本文阐述了滑坡危险性评价的研究意义、国内外滑坡危险性分析和稳定性评价的研究现状,并确定出大夫山森林公园滑坡的危险性分析和稳定性评价的研究方法。在查阅大量关于研究区的区域地质资料和滑坡的发育历史后,对研究区内2个滑坡点进行了野外实地调查,对各点的危险性进行较为准确的野外评价,提取用于进行滑坡危险性评价和稳定性分析的各因素的参数。采用模糊综合评判法对滑坡的危险性进行了分析。此外,本文还通过GEO-STUDIO详细分析了该滑坡的稳定性,分析过程以北西变形体为例,利用Seep/W模块分析出该边坡的天然状态孔隙水压力等,并使用其与Sigma/W模块进行耦合,计算出边坡位移状态,进而推出边坡剪出位置,最后利用Slope/W模块,得出滑坡的稳定性系数,判断出滑坡变形趋势。通过模糊综合评判法所得到滑坡危险性的分析结果以及基于GEO-STDUIO的稳定性分析结果,基本上与野外现场的勘察结果是一致的,所以使用该方法对大夫山森林公园危险性评价及稳定性评价是合理可信的。
[Abstract]:Recently, there was a landslide on the west side of the forest park in Dushan. The landslide was divided into two metamorphosed bodies, one in the south and the other in the north. There is a high voltage tower in the upper part of the deformed body in the north and west. The lower part of the landslide is Yu Shanxi Road and Dongxin Expressway. At present, the landslide still has a tendency to continue to expand. To the upper mountain tower and the lower road and pedestrian caused a great safety hazard. Therefore, it is necessary to evaluate and analyze the stability of the landslide in Dushan Forest Park. In this paper, the significance of landslide risk assessment, the research status of landslide risk analysis and stability assessment at home and abroad, and the research methods of landslide risk analysis and stability evaluation in Dushan Forest Park are described. After consulting a large amount of regional geological data and the development history of landslides in the study area, a field investigation was carried out on two landslide sites in the study area, and a more accurate field evaluation of the danger of each point was carried out. The parameters of various factors used for landslide risk assessment and stability analysis were extracted. The risk of landslide is analyzed by fuzzy comprehensive evaluation method. In addition, the stability of the landslide is analyzed in detail by GEO-STUDIO. The process of analyzing the deformation body north to the west is taken as an example. The natural pore water pressure of the slope is analyzed by Seep-W module and coupled with Sigma / W module. The displacement state of the slope is calculated, and then the slope shear position is deduced. Finally, the stability coefficient of the landslide is obtained by using Slope / W module, and the deformation trend of the landslide is judged. The results obtained by fuzzy comprehensive evaluation and stability analysis based on GEO-STDUIO are basically consistent with the field survey results. So it is reasonable and reliable to use this method to evaluate the risk and stability of Dushan Forest Park.
【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】：2015
【分类号】：P642.22

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