摘要
煤层覆岩“三带”的分布研究对于煤矿安全生产至关重要。针对浅埋深、厚煤层的“三带”分布问题,以大柳塔井5^(-2)煤层52306工作面为研究背景,通过地质分析、勘查钻探、理论计算和现场实测的方法,确定了“三带”发育高度。对比了常用“三带”计算经验公式和大柳塔井的“三带”计算拟合公式的结果,发现结果之间差异较大,具有一定的局限性,但理论计算值为施工过程提供了参考。通过计算结果与勘查资料对比分析,导水裂缝带可发育至3号煤组,该区导水裂隙带实际发育高度与经验公式计算值存在差异,因此可能导通2^(-2)煤层及以上各含水层,成为矿井的主要充水通道,形成矿井安全隐患。为了确保矿井安全开采,建立设岩移传感器监测5^(-2)煤层开采时“三带”实时发育过程。该研究结果与方法对矿井其他相似条件工作面具有一定的指导意义。
The research on the distribution of three zones of coal seam overburden is very important for coal mine safety production.Aiming at the problem of three-zone distribution of shallow and thick coal seam,this paper takes 52306 working face of 5^(-2)coal seam in Daliuta mine as the research background,and determines the development height of three-zone through geological analysis,exploration drilling,theoretical calculation and field measurement.The results of the commonly used three-zone calculation empirical formula and the three-zone calculation fitting formula of Daliuta well are compared.It is found that the results are quite different and have certain limitations,but the theoretical calculation value provides a reference for the construction process.Through the comparative analysis of calculation results and exploration data,the water flowing fractured zone can be developed to No.3 coal group.The actual development height of the water flowing fractured zone in this area is much higher than the calculated value of the empirical formula,so it may be connected to the 2^(-2)coal seam and above aquifers,becoming the main water filling channel of the mine,forming a mine safety hazard.In order to ensure the safe mining of the mine,a rock movement sensor is established to monitor the real-time development process of the three zones during the mining of 5^(-2)coal seam.The research results and methods have certain guiding significance for other similar working faces in mines.
作者
贺斌
周兴
HE Bin;ZHOU Xing(Daliuta Coal Mine,CHN Energy Shendong Coal Group Co.,Ltd.,Shenmu 719315,China)
出处
《煤炭科学技术》
CAS
CSCD
北大核心
2022年第S02期1-6,共6页
Coal Science and Technology
关键词
厚煤层
三带分布
理论计算
大柳塔矿井
现场实测
thick coal seam
three-band distribution
theoretical calculation
Daliuta Coal Mine
field measurement
