大倾角“三软”厚煤层旋转段综采工艺研究

发布时间：2018-02-27 13:11

本文关键词： “三软”厚煤层虚心旋采旋转开采数值模拟　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：“三软”煤层开采中出现的煤壁片帮、支架钻底、顶板冒落等重大危害,至今仍制约着“三软”煤层的安全高效开采。尤其是在近距离采空区下进行旋转回采时,由于回采巷道和周围开采条件的变化,导致工作面不仅片帮现象严重,而且顶板冒落现象也经常出现。本文以淮南矿业集团潘北矿12124综采工作面的旋转开采段为工程背景。利用FLAC3D数值模拟软件对所研究的内容建立了数值模型,分析了旋采阶段的矿压特征等问题。结合工作面地质条件和机械设备的特点,对比分析了工作面实心和虚心旋采两种方法在工作面回采过程中对设备和顶板控制的影响,确定了虚心旋转开采的方法,设计了旋转开采进刀方案。并制定了工作面旋转开采时的操作流程以及工作面设备管理的方法。为以后类似地质条件下的煤矿开采问题提供一些参考。
[Abstract]:The great hazards of coal wall slab, support drilling and roof caving in the mining of "three soft" coal seams still restrict the safe and efficient mining of the "three soft" coal seams, especially in the process of rotary mining under the close goaf. Because of the change of mining conditions in the roadway and surrounding, the phenomenon of not only the roof but also the roof caving often appears in the working face. Based on the rotary mining section of 12124 fully mechanized mining face in Panbei Coal Mine of Huainan Mining Group, a numerical model is established by using FLAC3D software. In this paper, the characteristics of mine pressure in the stage of rotary mining are analyzed. Combined with the geological conditions of the working face and the characteristics of the mechanical equipment, the influence of the two methods of solid and open rotary mining on the control of the equipment and the roof in the mining process of the working face is compared and analyzed. The method of open-center rotary mining is determined. The feed scheme of rotary mining is designed, and the operation flow and the management method of working face equipment are worked out, which provides some references for the mining problems under similar geological conditions in the future.
【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】：TD823

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