【摘要】 通过现场观测,分析了朱仙庄矿高地应力特厚极软煤层轻放开采工作面支架支护阻力变化、巷道变形及顶煤顶板运移规律。认为该条件下所选轻放支架工作阻力合理,支承压力峰值点、顶煤顶板始动点与一般综放工作面相比,均前移,巷道变形严重。更多还原

【Abstract】 On the basis of field tests,the paper analyses the change of support resistance,roadway surface deformation and the moving of topcoal & roof in high geological stress and extra-thick & extra-soft seam adopted longwall top-coal caving with light hydraulic support in Zhuxianzhuang coal mineThe paper indicates that the designed support resistance is reasonable,the maximum value of abutment stress and the first moving point are both nearer to the face and the roadway surface deformation becomes more serious than those in general hydraulic support caving face更多还原