防片帮技术在“三软”煤层仰采综放面的应用

Application of Preventing Sloughing Technology in Upward Mining and Fully Mechanized Caving Face

根据"三软"不稳定厚煤层综放仰采煤体受力分析,找出仰采煤墙片帮原因,采取支架护顶能力改造、煤墙浅孔低压动态注水防治片帮冒顶技术、更换液压装置、增设快速移架装置等技术措施,使仰采煤墙片帮得到有效控制。

According to the pressure analysis of ＂three soft＇coal seam upward mining coal body, finding out the reason of coal wall sloughing, adopting to reform the support, coal wall inject water, replacing the liquid press equipments, the coal wall sloughing is effectively controlled.