云驾岭煤矿厚煤层综采覆岩活动规律研究

发布时间：2018-04-23 07:34

本文选题：厚煤层 + 覆岩活动　；参考：《河北工程大学》2017年硕士论文

【摘要】：云驾岭煤矿三采区主要开采2#煤层,厚4.1m,属于厚煤层,其开采工艺为综合机械化一次采全高。论文以云驾岭矿三采区12305工作面为工程背景,采用了理论分析、相似模拟、数值模拟、现场实测等方法,对厚煤层综采覆岩活动规律进行了研究。论文在众多国内外学者的研究成果的基础上,基于关键层理论,建立厚煤层综采覆岩结构力学模型,对覆岩的应力和位移变化进行理论研究。论文以云驾岭煤矿三采区为工程研究背景进行相似模拟实验,实验主要研究厚煤层综采覆岩的移动变形特征。论文以云驾岭煤矿为工程地质条件,采用FLAC3D数值模拟软件,通过建立平面模型,研究直接顶、亚关键层和主关键层的位移变化和应力分布,通过建立宏观模型,研究覆岩中位移场和应力场的演化规律和最终形态,进而得出厚煤层综采覆岩活动规律。最后,在云驾岭煤矿三采区12305工作面布置了测站,采用ZXZ20(A)型矿用钻孔成像装置,监测巷道覆岩活动情况,采用钻孔应力计监测采空区围岩的应力变化,分析检测结果,得出云驾岭煤矿三采区12305工作面覆岩活动规律,为云驾岭煤矿的安全生产提供了一定借鉴意义,同时也为相邻矿井或相似地质条件下矿井提供了一定参考。
[Abstract]:The third mining area of Yunjialing coal mine is mainly mining coal seam of 2#, which is 4.1 m thick and belongs to thick coal seam. Taking No. 12305 face of Yunjialing Coal Mine as the engineering background, this paper studies the law of overlying rock movement in thick coal seam by means of theoretical analysis, similarity simulation, numerical simulation, field measurement and so on. Based on the research results of many scholars at home and abroad, based on the theory of key layer, the mechanical model of overburden overburden structure is established, and the stress and displacement of overburden are studied theoretically. In this paper, the third mining area of Yunjialing coal mine is taken as the background of engineering research. The experiment mainly studies the movement and deformation characteristics of thick coal seam fully mechanized mining overburden. This paper takes Yunjialing coal mine as engineering geological condition, adopts FLAC3D numerical simulation software, through establishing plane model, studies the displacement change and stress distribution of direct roof, subcritical layer and main critical layer, and establishes macroscopic model. The evolution law and final form of displacement field and stress field in overburden are studied. Finally, the survey station is arranged at 12305 working face in the third mining area of Yunjialing Coal Mine. The type ZXZ20A) borehole imaging device is used to monitor the overburden rock activity of roadway, the stress change of surrounding rock in goaf is monitored by borehole stress meter, and the test results are analyzed. The law of overlying rock activity in 12305 face of Yunjialing coal mine is obtained, which provides a reference for the safety production of Yunjialing coal mine, and also provides a certain reference for the adjacent mine or mine under similar geological conditions.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD325

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