1) the pace of direct top collapsing initially
直接顶初次垮落步距
2) first caving of the immediate roof
直接顶初次垮落
3) 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。
4) caving pace
垮落步距
1.
Computation equation of first caving pace of basic roof is obtained.
将顶板剪切梁模型用于分析采场基本顶初次来压,确定了基本顶最大等效剪力所在位置,得到了基本顶初次垮落步距的计算公式。
5) initial caving
初次垮落
1.
Dynamic analysis of the initial caving process of roof coal seam in roof caving coal face;
放顶煤开采顶煤初次垮落动力学分析
6) roof caving
初次落顶
补充资料：步距误差
分子式：
CAS号：
性质： 光学掩模版列或行上相邻功能图形中，某图像的点与相应图像对应点之间的距离叫步距。实测步距与规定步距之差即步距误差。
CAS号：
性质： 光学掩模版列或行上相邻功能图形中，某图像的点与相应图像对应点之间的距离叫步距。实测步距与规定步距之差即步距误差。
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