煤矿安全2017，Vol.48Issue(7)：49-51,56,4.DOI:10.13347/j.cnki.mkaq.2017.07.013
近浅埋煤层大采高工作面矿压显现规律研究
Research on Strata Behavior Characteristics of Nearly Shallow-buried Coal Seam with Large Mining Height
摘要
Abstract
In order to master the law of strata pressure behavior of large mining height working face in nearly shallow buried coal seam of Yushen Coal Mining Area,N1200 fully mechanized longwall mining face in the mining area is chosen as the research object,and physical model experiment of similar material is carried out.The results show that the initial working pressure of N 1200 face is 56 m,the average step pressure is 15.8 m,the working resistance is 4 843 kN,the dynamic load factor is 1.95,and the resistance of support reaches 9 739 kN.Due to the influence of double-critical laminated damage,the working face presents large and small periodic pressure phenomenon.When the pressure is in small cycle,the collapse angle of rock is mainly distributed on the main key stratum.When the pressure is in big cycle,the coefficient and the peak value of the advancing bearing pressure are increased.关键词
近浅埋煤层/物理模型实验/垮落角/关键层/矿压显现Key words
nearly shallow buried coal seam/physical model experiment/caving angle/key stratum/strata behavior分类
矿业与冶金引用本文复制引用
唐辉..近浅埋煤层大采高工作面矿压显现规律研究[J].煤矿安全,2017,48(7):49-51,56,4.基金项目
国家科技部科研院所技术开发研究专项资金资助项目(2013EG122192) （2013EG122192）
国家科技部转制科研院所创新能力专项资金资助项目(2014EG122193) （2014EG122193）
中国煤炭科工集团有限公司科技创新基金资助项目(2013ZD002-03) （2013ZD002-03）
