丁集煤矿1272（3）大采高长工作面矿压规律特征

发布时间：2018-04-28 04:32

本文选题：大采高 + 长工作面　；参考：《安徽理工大学》2015年硕士论文

【摘要】：本文以淮南矿业集团丁集煤矿1272(3)工作面地质报告和现场矿压观测数据为基础,利用FLAC3D数值模拟方法模拟工作面开挖过程,分析采场覆岩的应力、位移、破坏变化的过程。根据关键层理论分析了丁集煤矿关键层分布特点及其对矿山压力显现的影响,通过理论计算分析了关键层的承载特点,计算出老顶垮落极限步距和周期来压步距；根据现场实测资料分析丁集煤矿大采高长工作面矿压规律,绘制了工作面开采过程中液压支架循环末阻力等值线图,与数值模拟实验进行比较,重点分析了沿工作面布置方向矿压显现的特征。根据工作面回采期间液压支架工作阻力数据适应性进行评价。结合前人研究成果和自己研究对大采高综采长工作面的研究认识,阐述了大采高综采长工作面矿压特点,为丁集煤矿生产管理提供理论支持。
[Abstract]:Based on the geological report and on - site mine pressure observation data of Dingji coal mine in Huaian Mining Group , this paper simulates the process of mining face excavation by using the FLAC3D numerical simulation method , analyzes the characteristics of the key stratum distribution and its influence on the mine pressure , analyses the bearing characteristics of the key stratum by theoretical calculation , and calculates the limit step distance and the cycle of the old roof fall ;
Based on the field test data , the regularity of mine pressure in the large mining face of Dingji coal mine is analyzed , and the contour map of the end resistance of the hydraulic support during the mining process of the working face is drawn . Compared with the numerical simulation experiment , the characteristics of the mine pressure appearing along the working face layout direction are analyzed , and the adaptability of the working resistance data of the hydraulic support during the mining face is evaluated .

Combined with the previous research results and the research on the large mining height fully mechanized mining face , this paper expounds the characteristics of mining pressure in the long working face of large mining and fully mechanized mining face , and provides theoretical support for the production management of Dingji coal mine .

【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】：TD323

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