中厚煤层超高水材料充填开采围岩活动规律研究

发布时间：2018-03-25 01:36

本文选题：中厚煤层　切入点：超高水材料　出处：《中国矿业大学》2015年硕士论文

【摘要】：如何更好地开采“三下”压煤已成为煤矿开采领域中的重要研究内容,而充填开采技术是充分有效开采“三下”压煤、提高煤炭资源采出率及控制地表沉陷的绿色开采技术。本文基于超高水材料的基本性质,依据义能煤矿CG1301工作面的超高水材料充填开采应用情况,结合充填开采相关理论分析、数值模拟分析及现场实测分析等手段,对中厚煤层超高水材料充填开采围岩活动规律及控制机理进行了初步分析,通过本研究得到了以下主要结论:(1)总结了国内外中厚煤层充填开采现状,确定了研究内容和技术路线。(2)通过分析中厚煤层超高水材料充填开采特点,总结出了适合中厚煤层充填开采的充填法以及优缺点和适用条件。(3)总结出采空区充填开采覆岩控制的相关理论主要有充填力学、关键层理论、等价采高理论和空隙量守恒理论,并从三个方面阐述了超高水材料充填体控制覆岩变形的机理。(4)详细分析了中厚煤层超高水材料袋式充填开采覆岩控制机理,得出其围岩活动规律。(5)采用数值模拟,得出超高水材料充填体能有效地控制了围岩活动,随着采空区充填率的提高,控制围岩效果越好。(6)通过对中厚煤层超高水材料充填开采工程应用分析,得出该技术不仅能够很好地控制采空区围岩活动,也具有显著的经济效益和长久的社会效益。
[Abstract]:How to better mine the "three down" coal compaction has become an important research content in the field of coal mining, and the filling mining technology is to fully and effectively exploit the "three lower" coal compaction. This paper, based on the basic properties of ultra-high water materials and the application of ultra-high water material filling mining in CG1301 face of Yineng Coal Mine, analyzes the relevant theory of filling mining according to the green mining technology of improving the mining rate of coal resources and controlling the surface subsidence. By means of numerical simulation analysis and field measurement analysis, the movement law and control mechanism of surrounding rock in super-high water filling mining in medium and thick coal seam are preliminarily analyzed. The main conclusions of this study are as follows: (1) the present situation of filling and mining of medium and thick coal seams at home and abroad is summarized, and the research content and technical route are determined. (2) by analyzing the characteristics of filling and mining of ultra-high water materials in medium and thick coal seams, The filling method suitable for filling mining in medium and thick coal seam and its advantages, disadvantages and applicable conditions are summarized. The relevant theories of overburden control in goaf filling mining are summarized as follows: filling mechanics, key layer theory, equivalent mining height theory and void volume conservation theory. The control mechanism of overburden deformation controlled by ultra-high water material filling body is expounded from three aspects. (4) the control mechanism of overburden mining with ultra-high water material bag filling in medium and thick coal seam is analyzed in detail, and the surrounding rock movement law is obtained by numerical simulation. It is concluded that the physical capacity of ultra-high water material filling can effectively control the surrounding rock movement, and with the increase of goaf filling rate, the better the control effect of surrounding rock is, through the analysis of the application of super-high water material filling mining engineering in medium and thick coal seam. It is concluded that the technology can not only control the wall rock movement in goaf, but also have remarkable economic and long-term social benefits.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD823.7

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