厚煤层综放工作面大断面切眼支护实践研究

Study on the Practice of Large-section Hole-cutting Support in Fully Mechanized Caving Face of Thick Coal Seam

针对余吾煤业厚煤层综放工作面切眼采用传统架棚支护存在的诸多问题,提出在正常地段施工锚网索支护,在异常地段实施U32型钢棚子支护的切眼新支护方案。通过新支护方案的实施,1205工作面切眼表面位移变化不足5%,能够满足设备安装尺寸要求,支护效果较好。

In view of the problems existing in the traditional trellis support adopted in the cutting hole of the fully mechanized top coal caving face in Yuwu Coal Industry,the paper puts forward a new cutting hole support scheme,which is to construct the anchor mesh cable support in the normal section and to implement the U32 type steel shed support in the abnormal section.Through the implementation of the new support scheme,the change of the surface displacement of the 1205 working face is less than 5%,which can meet the requirements of the equipment installation size,and the support effect is good.