摘要
裂隙带高度直接影响矿井的生产安全,是防水岩柱设计和水体下开采时最重要的数据。某矿井为确定5号煤开采后的顶板裂隙带发育高度,采用了《"三下"规程》中记载的公式计算了裂隙带的发育高度,计算最大裂隙带高度为45.2 m;应用UDEC数值模拟对裂隙高度进行了模拟,模拟裂隙带最大高度45 m;对试采工作面的裂隙带发育高度进行了实测,实测裂隙带高度为48.7 m。综合分析以上结果,得出该矿5号煤开采后的顶板裂隙带高度选择48.7 m。
To ascertain the height of crack belt have direct influence for ensuring mine product safely,and also as the most important data for designing waterproof coal pillar and mining safely under water bodies. It is a mine that should determine the height of crack belt in roof while after mining coal seam No. 5,according to the formula collected in Mining Regulations Under Building,Water,Railway and Main Coal-pillar acquired the maximum height of crack belt is 45. 2 m; By applying UDEC numerical simulation to know the maximum height of crack belt is 45 m; Testing the height of crack belt at the working site,emerged a data is 48. 7 m. Finally,considering all results above,leading to a conclusion that the proper height of crack belt is 48. 7 m while after No. 5 mining coal seam.
出处
《煤》
2017年第11期15-18,共4页
Coal
基金
国家自然科学基金资助项目(51174109)
关键词
裂隙带高度
计算机模拟
UDEC数值模拟
窥测孔
“三下”开采
height of crack belt
numerical simulation
UDEC numerical simulation
observation bore
mining under water bodies,buildings and railways
