摘要
本文以木城涧煤矿西四壁工作面矸石充填沿空留巷为研究对象,在充分分析了煤层顶底板及围岩地质条件的情况下建立FLAC3D数值模拟模型,并制定充填体宽度为1 m、1.5 m、2 m三个方案。经过分析各个方案的围岩塑性区、顶底板位移、两帮移近量与垂直应力分布等,最终确定充填体宽度为1.5 m为最优方案。研究结果对充填体的留设具有科学指导作用。
Taking coal waste back filling in gob-side entry retaining at west wall face in Muchengjian Colliery as a research object, based on the analysis of roof and floor in coal seam and the surrounding geological conditions, the paper establishes FLAC3 Dnumerical simulation model and formulates three scheme of backfill width is 1 m, 1.5 m and 2 m. Finally the 1.5 m-scheme is determined the best scheme, which has scientific guidance for the setting of filling body.
出处
《江西煤炭科技》
2016年第3期115-118,共4页
Jiangxi Coal Science & Technology
关键词
沿空留巷
纤石充填宽度
数值模拟
filling width
numerical simulation
coal waste back filling
