【摘要】 为研究特厚煤层倾斜分层综放条件下顶煤破坏后的运移规律,运用深基点位移追踪法对华亭陈家沟煤矿1205倾斜分层综放工作面顶煤在工作面推进过程中始动点位置、基点位移量、位移速率进行现场实测。结果表明,1205工作面顶煤在工作面推进过程中随采随冒,顶煤受采动影响上位顶煤先于下位顶煤开始运动;工作面煤壁前方顶煤的位移量和移动速率都要小于煤壁后方,这样的规律有利于提高顶煤放出率。更多还原

【Abstract】 In order to study the top-coal movement law of fully mechanized top-coal caving face in the inclined slice of extra-thick coal seam after top-coal breaking,the in-site measurement of the position of starting point,the displacement of basis points and the rate of displacement in the course of advancing of1205 fully mechanized top-coal caving face in the inclined slice was carried out by the deep base displacement tracking method in the coal mine named Huating Chenjiagou. The results showed that,in the process of advancing of the working face the top-coal of 1205 working face fell with mining,the higher top-coal started moving before the lower top-coal due to mining,the displacement and moving velocity of the top-coal in front of working face were less than that ones after the working face,this moving law of top-coal was helpful to improve the recovery rate of top-coal.更多还原