常村矿超长孤岛综放面矿压观测及显现特征

Ground pressure character of superlong isolated island fully-mechanized top coal caving face for Changcun Coal Mine

常村煤矿21072超长孤岛综放工作面埋深大,地质条件复杂。对工作面进行了矿压观测,分析了顶煤与顶板的垮落特征,分析了工作面的周期来压规律;给出了支架初撑力、工作阻力分布特征,分析了工序对支架工作阻力的影响,并对支架受力状态进行了分析。

Under the complex geologic condition of 21072 superlong isolated island fully-mechanized top coal caving face in Changcun Coal Mine,the ground pressure observation is executed, the caving character of top coal and roof and the periodic roof pressure law of working face are analyzed. The distribution character of support setting load and working resistance is put forward. The procedure influencing on the support working resistance and support stress are analyzed.