1) first roof caving
初次放顶
1.
Technology and control of first roof caving in coal working face;
采煤工作面初次放顶的技术与管理
2.
Practice of first roof caving technology at comprehensive mechanical mining face in steep thick coal seam;
急倾斜特厚煤层综放工作面超段高初次放顶的实践
2) roof caving
初次落顶
3) first caving of the immediate roof
直接顶初次垮落
4) first discharge specific capacity
初次放电容量
5) the pace of top coal collapsing initially
顶煤初次垮落步距
1.
Through observing the practical mine pressure of Changgou mine's working face,including the pace of top coal collapsing initially,the pace of direct roof rock collapsing initially,the pace of basic top pressing initially and its intensity,and the pace of the basic top pressing periodically and its intensity,the paper has researched the rule of stope's mine pressure.
对长沟煤矿工作面进行了实际矿压观测,包括顶煤初次垮落步距、直接顶岩层初次垮落步距、基本顶初次来压步距及其来压强度、基本顶周期来压步距及其来压强度,分析研究了采场矿压规律。
6) the pace of direct top collapsing initially
直接顶初次垮落步距
补充资料：综采放顶煤
综采放顶煤：厚煤层煤炭开采技术之一。把原来分层开采的煤炭，一次采完。方法是，在煤层底部按传统方法开采，使上面的煤炭在矿压的作用下，自动落下来。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条