大倾角轻型支架综采放顶煤矿山压力显现规律研究

Research on Strata Behaviors Regularity of Fully-mechanized Top Coal Caving with Large Inclined Angle Mining and Light Supports

通过对鹤煤二矿二1煤层3604综放工作面支架工作阻力、工作面顶板破碎度、巷道变形以及顶煤运移的观测,掌握了支架工作阻力、工作面端面区域顶板破碎及冒落状况、工作面巷道的变形情况、顶煤及顶板运移规律。同时也确定了工作面周期来压步距、来压强度以及支架工作阻力的变化规律,为合理评价该支架在大倾角煤层条件下的适应性和确定合理支护方式提供了科学依据。

By observations on hydraulic supports resistance and situation of broken roof,deformation of roadway,top coal movement on 3604 fully-mechanized top coal caving face in Hebi No.2 Mine,working resistance of light supports,the roof broken and roof caving of working face end,deformation of roadway and the laws of top coal movement were mastered.The cycle weighting intervals of working face,periodic pressure strength and change rules of working resistance of supports were also determined,which provided scientific basis for reasonable evaluation on light supports under large inclined coal seam mining and determination of reasonable supporting method.