1) Independent advance of ore breaking
崩矿步距
1.
Pillarless sublevel caving is adopted by Dahongshan Iron Mine in the underground minin stope with the capacity of 4 million t/ a and its ore loss and dilution not only relate with the structural parameters of the mining stope,the independent advance of ore breaking,but also blasting parameters of the drilling directly impact on development status of ore drawing off.
大红山铁矿井下400万t/a生产采场采用无底柱分段崩落法开采,其矿石损失和贫化不仅与采场结构参数、崩矿步距有关,采场凿岩爆破参数也直接影响着矿石放出体的发育状态。
2) great ore-blast distance
大崩矿步距
3) 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。
4) ore breaking
崩矿
5) ore pillar dilapidation
矿柱崩落
1.
In this thesis, according to the condition of Mujia Hill, the method of roof cutting and ore pillar dilapidation is proposed.
本文根据木架山的具体条件，提出了应用切顶与矿柱崩落联合法进行木架山采空场处理。
6) Roof cut caving
挑顶崩矿
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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