1) drawing interval
放煤步距
1.
The effects of different drawing intervaland top-coal fragmental size on flow character of coal-gangue and sand,and on mixed degree of coal and gangue were analyzed during drawing top-coal.
分析了不同放煤步距、顶煤块度对放煤过程中煤矸砂流动形态、混矸程度的影响。
2.
Feasible drawing interval is the basis to study mining equipment of fully-mechanize coal mining with caving method.
综放开采的合理放煤步距是研制综放工作面成套技术装备的基础,是提高综放工作面采出率与煤质的关键之一。
3.
Through observing on spot in compound mining face,the activity rule of roof coal is analyzed,the reason of roof coal crushing and distribution state are summrised,the reasonable drawing interval and questions noticed in roof and floor mannge are provided.
通过对综放工作面的现场观测 ,分析了顶煤的活动规律 ,总结出顶煤破碎的原因及分带情况 ,并提出合理的放煤步距及工作面顶底板管理中应注意的问
2) Drawing pace
放矿步距
1.
The paper gets every sublevel recovery index of diversity structure parameter through multitude sublevel drawing experiment in the condition of diversity drift interval and drawing pace.
通过不同进路间距、不同放矿步距下的多分段放矿实验,得到了各结构参数下的各分段回收指标,并用 Matlab 编程对分段回收指标与结构参数的关系进行了回归分析,得出了岩石混入率、纯矿石回收率、回收率与分段、放矿步距、进路间距之间的回归方程,阐明了不同分段结构参数对回收指标的影响。
2.
A 3dimensional model experiment was therefore carried out in lab with the intention of determining such constructional parameters as drift intervals and drawing pace to meet the mining requirements after the sublevel height has been up to 125?m.
5m·为确定与分段高度相对应的进路间距和放矿步距,对小官庄铁矿分段高度加大到12。
3.
Combined with the Xishimen Iron Mine sublevel caving mining situation and the drawing simulation experiment,this paper analyzed the rock and ore moving process in drawing and caving,dexcribed the relationship between the drawing pace and mixed rock amount.
:本文结合西石门铁矿无底柱分段崩落法开采情况及放矿模拟实验 ,对覆岩下放矿崩落矿岩移动过程进行了分析 ,论述了放矿步距与岩石混入量的关系。
3) sublevel caving step_distance
综放步距
1.
A formula for calculating the sublevel caving step_distance is given.
结合实际分析了顶煤放出过程中矸石混入的特点，在此基础上给出了综放步距的计算式，并应用于潞安矿务局３号煤层综放工作面，对综放开采参数优化有所裨益。
4) 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。
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。
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