摘要
针对相邻煤层存在的煤层间距小,开采条件困难,且因上煤层开采过程中底板煤岩层受到破坏,导致下煤层顶板在开采前损坏,造成下煤层回采巷道维护困难的难题,通过对相邻煤层开采条件研究,并对上煤层开采过程中工作面顶板稳定性分析,以及对上煤层预留煤柱载荷对地板的压力分布研究,确定下煤层工作面顶板易出现局部应力过载,产生局部顶板破坏。最后确定了下煤层回采巷道合理内错方式。
Aiming at the adjacent coal seam spacing is small, difficult mining conditions, and because of the coal seam floor coal strata in the process of mining damage, leading to the coal seam roof damage before mining, maintenance diffieult problem caused by coal seam mining, through the study of adjacent coal seam mining conditions, and on the coal mining working face roof stability analysis in the process, as well as to the reserve of coal seam coal pillars on load to study the pressure distribution of the floor, to determine coal seam working face under the roof is easy to appear local stress overload, produce local roof breakage. Finally determined the reasonable coal seam mining under the wrong way.
作者
陆军
王新翔
Lu Jun Wang Xin-xiang(Huozhou Coal Power Group JinNan coal industry limited company, Shanxi Hejin 04330)
出处
《山东煤炭科技》
2016年第12期72-73,83,共3页
Shandong Coal Science and Technology
关键词
相邻煤层
下煤层开采
巷道支护
研究分析
adjacent coal seams
coal seam mining under
roadway supporting
research and analysis
