深部薄煤层工作面采动应力演化规律研究

Study on evolution law of ming stress in deep thin coal face

为研究深部薄煤层工作面采动应力演化规律,以滴道盛和煤矿立井12号煤层为研究背景,运用FLAC3D模拟软件,分别模拟上下顺槽掘进和工作面推进过程,分析了开采过程中应力演化规律。结果表明:顺槽掘进后,下顺槽上部附近出现明显水平应力集中现象。随着工作面的推进,应力集中现象逐渐由下部向上部转移。

In order to study the deep thin coal seam face mining stress evolution,taking 12#coal seam in vertical shaft of Digaoshenghe Coal Mine as the research background,FLAC3D simulation software was used to simulate the excavation process of upper and lower roadways and the advance process of working face respectively,and the stress evolution law in mining process was analyzed.The results show that obvious horizontal stress concentration occurs near the upper part of the lower roadway after tunneling.With the advance of the working face,the stress concentration phenomenon is gradually transferred from the bottom to the top.