漳村煤矿2502工作面过陷落柱方案的探究

发布时间：2018-06-13 16:45

本文选题：陷落柱 + 数值模拟　；参考：《湖南科技大学学报(自然科学版)》2017年01期

【摘要】：针对漳村煤矿2502工作面X_(12)陷落柱情况,本文运用FLAC~(3D)数值软件模拟对工作面推进过程中陷落柱变形及煤层中应力变化情况进行了研究,研究结果表明:随着开采的进行,逐渐出现了较明显的应力集中现象.在过陷落柱期间,工作面顶板的破坏范围大约在54 m,而底板的破坏范围大约在22 m.开采到距陷落柱35 m时,采动作用对陷落柱开始作用.对过X_(12)陷落柱进行可行性分析得出,采用采煤机截割与放炮破碎相结合的方式强行通过.工程实践表明,该方案保证了工作面的连续推进,不仅有效地控制了陷落柱对生产的影响,提高了煤炭资源的回收率,而且能为以后的工作面过陷落柱提供技术指导.
[Abstract]:In this paper, the deformation of collapse pillar and the change of stress in coal seam during the working face advance are studied by using the numerical simulation software of FLACU 3D, aiming at the situation of Xji 12) collapse column in 2502 face of Zhangcun Coal Mine. The results show that: with the development of mining, the deformation of collapse pillar and the change of stress in coal seam are studied in this paper. A more obvious phenomenon of stress concentration appeared gradually. During the period of collapse column, the damage range of roof is about 54 m, and that of floor is about 22 m. When the mining is 35 m away from the collapse pillar, the mining action begins to act on the collapse pillar. Through the feasibility analysis of the settlement column, it is concluded that the method of combining cutting of coal mining machine with blasting crushing is used to force it through. The engineering practice shows that the scheme ensures the continuous advance of the working face, not only effectively controls the influence of the collapse column on the production, but also improves the recovery rate of coal resources, and can provide technical guidance for the future working face to cross the collapse pillar.
【作者单位】：湖南科技大学资源环境与安全工程学院;
【基金】：国家自然科学基金资助项目(51474104)
【分类号】：TD327

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