厚松散层重复采动条件下地表移动变形规律研究

发布时间：2018-03-11 04:08

本文选题：厚松散层　切入点：地表移动规律　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国经济社会的快速发展,基础设施建设项目的扩建,对能源矿产资源的需求量呈快速增长的趋势,尤其是煤炭资源被大量开采,使得我国大量浅层煤炭矿区的资源面临枯竭,煤矿开采逐渐向深部方向发展,并且竖直方向上的分层重复开采现象越来越常见。厚松散层重复开采条件下地表移动变形特征明显区别于非厚松散层的矿区,这些特征主要表现在地表移动变形更加剧烈和沉陷盆地范围的扩展。要对厚松散层重复开采条件下地表沉陷进行准确预测及控制、实现“三下”压煤的安全回采,必须深入分析厚松散层重复开采条件下的地表沉陷规律。本文在淮南矿业集团某矿工作面观测站实测资料的基础上,求取了地表移动变形角量参数和预计参数,并和首采面的相应参数做了对比分析。在求取概率积分法参数的基础上,对工作面进行了地表移动变形的预计。论文详细分析了厚松散层重复开采条件下地表移动变形规律,本文的研究成果对类似厚松散层重复开采条件下的地表沉陷预测及控制、保护煤柱的留设、“三下”采煤均具有一定的理论价值和指导意义。
[Abstract]:With the rapid development of China's economy and society and the expansion of infrastructure construction projects, the demand for energy and mineral resources is increasing rapidly, especially the coal resources are exploited in large quantities. As a result of the depletion of a large number of shallow coal mining areas in China, coal mining is gradually developing towards the deep. And the phenomenon of stratified repeated mining in vertical direction is more and more common. The characteristics of surface movement and deformation under the condition of repeated mining of thick loose layer are obviously different from those of non-thick loose layer mining area. These characteristics are mainly manifested in the more severe deformation of the surface movement and the expansion of the subsidence basin area. It is necessary to accurately predict and control the surface subsidence under the condition of repeated mining of thick loose beds, so as to realize the safe recovery of the "three down" coal compaction. It is necessary to deeply analyze the law of surface subsidence under the condition of repeated mining of thick loose beds. Based on the measured data of a mining face observation station in Huainan Mining Group, the parameters of angle and prediction of surface movement and deformation are obtained in this paper. On the basis of obtaining the parameters of probabilistic integration method, the surface movement and deformation of the face are predicted, and the law of surface movement and deformation under the condition of repeated mining of thick loose layer is analyzed in detail. The research results of this paper have certain theoretical value and guiding significance for the prediction and control of surface subsidence under the condition of repeated mining of similar thick loose beds, the protection of coal pillar retention and the "three down" coal mining.
【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】：TD325

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