采煤工作面“倒放关门顶”

Caving Closed-door Roof Upside-down at Coal Face

指出了鹤岗矿业集团兴安煤矿采煤工作面正放关门顶存在的缺点,提出了倒放关门顶的工艺措施。多年来,兴安煤矿在各种顶板不同煤层坡度下的采煤工作面采用了倒放关门顶工艺,生产安全可靠,取得了一定的经济效益。

The faults existing in caving closed- door roof upright are pointed out at the coal face in Xing＇ an Coal Mine of Hegang Mining Industry Group. The craft measures of caving closed - door roof upside - down are pointed out. In many years, under all kinds of roofs and different coal seams slope, the caving closed - door roof upside - down is applied at the coal face of Xing＇ an Coal Mine. The production is safe and dependable. The economic profit is obtained.