摘要
针对综放沿空巷道顶底板及两帮变形严重、稳定性差的问题,通过对沿空巷道失稳力学机理的分析,利用FLAC数值模拟软件,对支护与未支护条件下选取不同煤柱宽度时的沿空巷道底板下沉量及煤柱水平位移进行了模拟分析,得出在南岭公司303工作面地质条件下,煤柱宽度与沿空巷道底板下沉量及煤柱水平位移的关系,最终确定了最为合理的煤柱宽度。
Based on the surrounding rock deformed serious and poor stability of fully-mechanized caving faces gob-side entry problem, through the analysis of gob-side entry instability of mechanics mechanism, the FLAC numerical simulation software was used to simulate the subsidence and horizontal displacement of the coal pillar width and the supporting conditions, the coal pillar width and subsidence and horizontal displacement of the coal pillar along roadway floor in the geological conditions of 5303 fully-mechanized caving was concluded and the most reasonable coal pillar width was settled ultimately.
出处
《煤炭与化工》
CAS
2014年第6期23-25,共3页
Coal and Chemical Industry
关键词
沿空巷道
煤柱宽度
锚杆支护
gob-side entry
width of coal pillar
bolt support