摘要
为了提高矿井煤炭资源采出率,根据三不拉矿井的浅埋深、厚风积沙层、薄基岩煤层开采条件的特点,通过采用FLAC^(3D)数值模拟计算,全面分析三不拉2^(-2)煤层不同煤柱尺寸的受力和稳定状态,从而给出开采2^(-2)煤层留设的合理煤柱尺寸,实现了矿井的最大煤炭采出率。
In order to improve the coal mining rate of the mine, according to the shallow mining depth, thick sand overburden, thin base rock seam and other mining condition features of Sanbula Mine, the paper analyzed the stressed and stability status of the different size coal pillars in No. 2^-2 seam of Sanbula Mine base on the FLAC3D numerical simulation, Then the paper provided the rational coal pillar size for No. 2^-2 seam mining and a max coal mining rate of the mine was obtained.
出处
《煤炭科学技术》
CAS
北大核心
2008年第8期12-14,共3页
Coal Science and Technology
关键词
浅埋深
采出率
数值分析
煤柱
shallow mining depth
coal mining rate
numerical analysis
coal pillar
