论文中文题名: | 娘娘山大口子滑坡稳定性分析与治理研究 |
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学号: | 04331 |
保密级别: | 公开 |
学科代码: | 081803 |
学科名称: | 地质工程 |
学生类型: | 硕士 |
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第一导师姓名: | |
论文外文题名: | The Study on the Stability and Treating of DaKouZi Landslide of Niangniang Mountain in Henan Province |
论文中文关键词: | |
论文外文关键词: | Landslide Factors Failure mechanism Finite Element Mining conditions |
论文中文摘要: |
随着国家对能源需求的不断增大,采矿业迅速发展,由此而产生的开采后地质灾害层出不穷。本文以河南省宝丰县娘娘山地区因采煤形成的老采空区上部滑坡为依托,首先回顾了国内外滑坡稳定性研究和治理技术的发展现状,并介绍了一些常用的数值分析方法以及对这些方法进展的浅析。在确定了本文的研究内容和基本思路的基础上,概述了河南省宝丰县娘娘山地区的自然地质环境、其次介绍了以往采矿的基本情况,并对研究区工程地质条件进行了评价。结合前人对采矿边坡变形规律分析的理论和研究,确定了影响本研究区滑坡稳定的主要因素,其中包括滑坡的岩体类型、岩体结构、煤层埋深、开采条件、滑坡形态及地质构造,对滑坡稳定性进行了初步的判定;在讨论极限平衡法计算坡体稳定性的过程中,充分考虑采动因素的影响,最终选取最为合理的极限平衡法对滑坡进行了稳定性计算,并对计算结果进行了分析,与实际进行了对照,充分说明计算结果的正确性和选取的极限平衡法在采动滑坡稳定性计算中的适用性。依托本文,作者介绍了NCAP-2D有限元分析程序的基本原理,并用其对滑坡的施工过程进行了模拟,分析了滑坡掘进时的应力、应变特征,以及由于掘进所导致的掘进面、坡面、坡脚塑性区的出现,充分反映了地下开采对坡体稳定性的影响而最终导致的滑坡局部失稳现象。
在对该滑坡治理方法进行研究的基础上,针对本文研究对象的实际情况,提出最合理的治理方案,选取最经济合理的治理方法即注浆法,并对注浆法的分类、注浆流程,注浆理论进行了简要分析,对治理结果进行了有限元模拟,给出了治理后的应力、应变特征曲线图及塑性区特征,对比前面开采过程中的分析结果,进行了治理后的稳定性分析评价,同时也验证了NCAP-2D有限元分析软件在边坡稳定性计算中的实用性。
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论文外文摘要: |
In recent years, with the increasing demand for energy, mining industry is rapidly developing,as a result, the emerging mining geological disasters.Particularly complex geological conditions in the mountains, the landslide caused by the mining.In this paper, based on Henan archaeologists empress landslide,Recalling the first landslide stability and the development of treatment technologies.It also introduced some kind of numerical analysis methods and Analysis of the progress of these methods.In determining the content and basic ideas of this study, based on First outlined by the provincial archaeologists empress landslide natural geological environment, mining conditions,adding engineering geological conditions for the evaluation.In combination with the theory of mine lakes deformation analysis and research,Landslide stability of this study to determine the impact of the major factors, including the decline of rock types, rock structures, seam depth.mining conditions, landslides and tectonic patterns, a preliminary determination of landslides for stability;Limit balanced discussion in the process of calculating the slope stability, and give full consideration to the impact of mining.eventually selected the most reasonable limit equilibrium method for the stability of the landslide is calculated and the results are analyzed.with the actual conduct of the control,The results fully demonstrated the accuracy and balance of the limit in selected mining landslide stability in terms of applicability.Relying on paper, the authors introduce the basic tenets NCAP-2D finite element analysis program.Landslide and used in the construction of a simulation of the landslide at the excavation of stress, strain characteristicsAs a result of excavation and the excavation face, slope, the slope of plastic there,fully reflect the impact of underground mining on the slope stability and eventually lead to regional instability in the landslide.
Finally, a simple method to slide into management and research, this study aimed at the actual situation,the most rational management program, choosing the most economical and reasonable approach is that grouting, and the classification of grouting, grouting process.Grouting a brief theoretical analysis of the treatment results of the finite element simulations, the treatment of stress,Contingency plans and plastic features prominent characteristic curve, as compared with previous mining results of the analysis process.Stability analysis for the evaluation after treatment,NCAP-2D also verified finite element analysis software in the calculation of slope stability practicality.
This article proposed the landslide stability assessment method and the landslide reinforcement technology are useful of the similar landslide.
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中图分类号: | TD824.7 |
开放日期: | 2008-04-28 |