副井井筒的破坏机理和变形规律的研究
发布时间：2018-10-30 15:48
【摘要】：自一九八七年以来,我国华东地区的淮北、徐州、大屯等矿区的立井井筒相继发生破坏。到目前为止,全国范围内已有60余个在厚冲积层中的立井井筒发生破坏。立井井筒非采动破坏是一种特殊类型的工程地质灾害,它往往严重地影响着矿山的正常运营,危及着矿区的生产安全,迫使部分矿井停产,造成重大的经济损失。 本文介绍了GM(1,1)模型的建模原理和方法,并依据灰色系统理论,编写了灰色GM(1,1)模型预测程序,建立了能反映监测动态变化的灰色GM(1,1)等维新息模型,并得到：副井井架基础、井筒大南竖向压缩量和大北竖向压缩量的残差中误差分别为0.62、0.11和0.03mmm,模型精度等级均为1级。并对监测点下一期的沉降值进行了分析和预测。 本文介绍了三维快速拉格朗日法(FLAC3D数值模拟)的基本原理,并基于童亭矿立井井筒的力学参数及工业广场的水文地质条件,建立了立井井筒破坏的数值模拟计算模型,共分四个渗流实验进行,分别对该四个实验中井筒破坏过程中的水、土和井筒三者的相互作用进行耦合模拟计算,并进行相应的分析和预测,确定立井井筒在受非采动影响下发生破坏的过程及机理；数值模拟结果与实测数据相比较,表明在立井井筒的破坏分析与预测方面,FLAC3D数值模拟分析法是可行的,其直观、动态的分析将丰富对立井井筒破坏机理的研究,为治理相似地质采矿条件的矿井灾害提供了新的方法和理论。
[Abstract]:Since 1987, the vertical wellbore of Huaibei, Xuzhou, Datun and other mining areas in East China have been destroyed one after another. Up to now, more than 60 vertical wellbore in thick alluvium have been destroyed in the whole country. Shaft non-mining damage is a special type of engineering geological disaster, which often seriously affects the normal operation of the mine, endangers the production safety of the mining area, forces part of the mine to stop production, and causes great economic losses. In this paper, the modeling principle and method of GM (1K1) model are introduced. According to the grey system theory, the prediction program of grey GM (1K1) model is compiled, and the grey GM (1K1) model of dimension innovation which can reflect the dynamic change of monitoring is established. The results show that the average residual errors of shaft vertical compression and vertical compression are 0.62m0.11 and 0.03mm, respectively, and the model accuracy grade is one grade. The settlement value of the next period of monitoring point is analyzed and forecasted. This paper introduces the basic principle of three-dimensional fast Lagrangian method (FLAC3D numerical simulation), and based on the mechanical parameters of shaft and hydrogeological conditions of industry square, establishes a numerical simulation calculation model of shaft failure in Tongting Mine. In the four experiments, the interaction of water, soil and wellbore in the process of wellbore failure is simulated and calculated, and the corresponding analysis and prediction are carried out. Determine the failure process and mechanism of shaft under the influence of non-production. The comparison between the numerical simulation results and the measured data shows that the FLAC3D numerical simulation analysis method is feasible in the analysis and prediction of shaft failure, and its intuitive and dynamic analysis will enrich the research on the shaft failure mechanism. It provides a new method and theory for controlling mine disaster with similar geological and mining conditions.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD321
本文编号：2300441
[Abstract]:Since 1987, the vertical wellbore of Huaibei, Xuzhou, Datun and other mining areas in East China have been destroyed one after another. Up to now, more than 60 vertical wellbore in thick alluvium have been destroyed in the whole country. Shaft non-mining damage is a special type of engineering geological disaster, which often seriously affects the normal operation of the mine, endangers the production safety of the mining area, forces part of the mine to stop production, and causes great economic losses. In this paper, the modeling principle and method of GM (1K1) model are introduced. According to the grey system theory, the prediction program of grey GM (1K1) model is compiled, and the grey GM (1K1) model of dimension innovation which can reflect the dynamic change of monitoring is established. The results show that the average residual errors of shaft vertical compression and vertical compression are 0.62m0.11 and 0.03mm, respectively, and the model accuracy grade is one grade. The settlement value of the next period of monitoring point is analyzed and forecasted. This paper introduces the basic principle of three-dimensional fast Lagrangian method (FLAC3D numerical simulation), and based on the mechanical parameters of shaft and hydrogeological conditions of industry square, establishes a numerical simulation calculation model of shaft failure in Tongting Mine. In the four experiments, the interaction of water, soil and wellbore in the process of wellbore failure is simulated and calculated, and the corresponding analysis and prediction are carried out. Determine the failure process and mechanism of shaft under the influence of non-production. The comparison between the numerical simulation results and the measured data shows that the FLAC3D numerical simulation analysis method is feasible in the analysis and prediction of shaft failure, and its intuitive and dynamic analysis will enrich the research on the shaft failure mechanism. It provides a new method and theory for controlling mine disaster with similar geological and mining conditions.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD321
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