抚顺市西露天矿南帮边坡稳定性与治理研究

发布时间：2018-03-29 15:54

本文选题：稳定性　切入点：计算　出处：《辽宁工程技术大学》2015年硕士论文

【摘要】：在岩土工程研究领域中,边坡工程是研究的难点和重点。随着科学技术的进步,大型工程建设活动日益活跃。与此同时,工程场地复杂的环境和地质条件使得与工程建设密切相关的边坡稳定性问题日渐凸显。例如：道路工程、水利工程、大型露天矿山开采工程等。由于大型露天矿边坡具有规模大、包含地层多、构造地质条件复杂、岩性变化多样等特点,加之岩体的风化作用,使得露天矿边坡的稳定性分析难度大。经查阅国内外大量与边坡稳定性分析相关的文献、专著,本文以抚顺市西露天矿南帮边坡为研究对象,分析工程地质条件,进行边坡变形动态监测。在实验室确定岩体的力学指标参数的基础上,研究边坡破坏变形的机制,运用层次分析法对南帮不稳定边坡进行整体稳定性评价,用极限平衡分析法和有限元强度折减法对变形较严重的E400和E1200剖面进行稳定性计算和数值模拟,最终实现边坡稳定性分析的研究。在有限元强度折减法中,采用ANSYS有限元分析软件,建立边坡内部可视化的位移、应力二维数值模型。最后,把理论与实践相结合,根据抚顺市西露天矿南帮边坡的实际地质条件,本文给出了以回填压脚为主,疏排水工程为辅的治理方案,并且用极限平衡分析法和有限元强度折减法对治理后的边坡稳定性进行验算。
[Abstract]:In the field of geotechnical engineering, slope engineering is a difficult and important part of the research. With the progress of science and technology, the construction activities of large-scale engineering become more and more active. At the same time, The complex environment and geological conditions of the engineering site make the slope stability problems closely related to the construction of the project increasingly prominent. For example: road engineering, water conservancy project, Large-scale open-pit mining projects, etc., due to the characteristics of large-scale open-pit slope with large scale, including many strata, complicated tectonic geological conditions, various lithologic changes, and the weathering of rock mass, It is difficult to analyze the slope stability of open pit mine. After consulting a large number of literatures and monographs related to slope stability analysis, this paper takes the south slope of Fushun west opencast mine as the research object to analyze the engineering geological conditions. The dynamic monitoring of slope deformation is carried out. On the basis of determining the mechanical parameters of rock mass in laboratory, the mechanism of slope failure and deformation is studied, and the overall stability evaluation of the unstable slope of the south slope is carried out by using the analytic hierarchy process (AHP). The stability calculation and numerical simulation of E400 and E1200 sections with severe deformation are carried out by using the limit equilibrium analysis method and the finite element strength reduction method. Finally, the slope stability analysis is realized. In the finite element strength reduction method, ANSYS finite element analysis software is used to establish a two-dimensional numerical model of displacement and stress in the slope. Finally, combining theory with practice, according to the actual geological conditions of the southern slope of Fushun West Open-pit Mine, a numerical model of displacement and stress is established. In this paper, a treatment scheme with backfill foot as main part and drainage engineering as auxiliary is given, and the stability of slope after treatment is checked by using limit equilibrium analysis method and finite element strength reduction method.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD824.7

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