抚顺西露天矿北帮地质灾害发展规律及其环境影响

发布时间：2018-05-20 03:28

本文选题：地质灾害 + 灰色理论　；参考：《吉林大学》2015年硕士论文

【摘要】：本文以抚顺发电有限责任公司厂区地质灾害评估为工程背景，针对该项目进行深入系统研究。本文介绍了该研究区内的区域地质环境及水文地质特征，在此基础上对其地质灾害现状进行评估，并采用灰色理论对抚顺发电有限责任公司基础变形进行预测分析。最后，采用拉格朗日元法对该研究区进行数值分析，，以研究其变形过程中应力变化及发展趋势。在此背景之下，本文主要进行以下几个方面的工作：（1）收集资料及现场调查，根据该项目的研究需要，对该研究区地质环境资料及水文地质特征资料进行收集，并采用岩土工程勘察方法对该地区进行实地勘察。（2）根据收集资料及勘察资料对该地区进行初步评估，对该研究区地质灾害现状给出初步评价。（3）在研究区布置沉降观测点，得到沉降发展趋势。采用灰色理论对其进行分析。经过分析，在2010年、2011年两年时间里，抚顺电厂厂区内建筑物基础变形将超过规范要求最大值。在灰色理论分析中只考虑了沉降对厂区建筑物基础的影响，但伴随露天矿采煤过程，抚顺电厂厂区伴随着水平位移变化。水平位移变化也是该厂建筑物产生破坏的原因。（4）利用数值模拟软件，采用拉格朗日元法对该研究区进行数值模拟，计算是在理论研究的基础上对现状变形进行分析，并将计算结果与监测资料进行对比，来验证计算模型和参数选择的正确性，从而来推算未来西露天矿开采对抚顺发电有限责任公司厂区稳定性的影响。（5）经过数值模拟分析，得出从2002年至2017年，研究区的水平位移与垂直位移的变化情况，并通过计算得到塑性区以分析该区域造成地质灾害的原因。（6）考虑在地下水径流与非地下水径流两种工况下，采用数值模拟软件对该研究区的边坡稳定性进行分析。
[Abstract]:Based on the engineering background of the geological hazard assessment of Fushun Power Generation Co., Ltd, this paper makes a deep and systematic study on the project. This paper introduces the regional geological environment and hydrogeological characteristics in the study area, on the basis of which the present situation of geological hazards is evaluated, and the foundation deformation of Fushun Power Generation Co., Ltd is predicted and analyzed by grey theory. Finally, the Lagrangian element method is used to study the stress variation and development trend in the study area. In this context, this paper mainly works on the following aspects: 1) collecting data and field investigation, according to the research needs of the project, collecting the data of geological environment and hydrogeological characteristics of the study area, and using geotechnical engineering survey method to carry out field investigation in this area. 2) based on the data collected and the survey data, the preliminary evaluation of the present situation of geological hazards in the study area is given. 3) the settlement observation points are arranged in the study area, and the development trend of settlement is obtained. Grey theory is used to analyze it. According to the analysis, in 2010 and 2011, the deformation of the building foundation in Fushun power plant will exceed the maximum value required by the code. In the grey theory analysis, only the influence of settlement on the building foundation in the plant area is considered, but with the coal mining process in the open pit, the horizontal displacement changes in the plant area of Fushun Power Plant. The change of horizontal displacement is also the cause of damage to the building. 4) using numerical simulation software and Lagrangian element method to simulate the study area, the present deformation is analyzed on the basis of theoretical research, and the calculated results are compared with the monitoring data. In order to verify the correctness of calculation model and parameter selection, the influence of mining on the plant stability of Fushun Power Generation Co., Ltd in the future can be calculated. 5) through numerical simulation and analysis, the variation of horizontal and vertical displacements in the study area from 2002 to 2017 is obtained, and the plastic zone is calculated to analyze the causes of geological disasters in this area. 6) considering the groundwater runoff and non-groundwater runoff, the slope stability of the study area is analyzed by numerical simulation software.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P694

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