Earthjustice, a nonprofit environmental law firm, is suing to block the lease of state-owned land in Otter Creek, Mont., to Arch Coal for mining to serve demand in Asia and elsewhere.
地球公正，一个非盈利的环保律师事务所，正在请求阻止租赁蒙大拿奥特·克里克的国有土地和劝阻阿奇煤炭公司开采煤矿用于满足亚洲和其它地区的需求。
The North China Block is the distributive province of the important iron ore reserve, the main-iron-ore-mining region, and is also the important district of the iron and steel industry in China.
华北陆块是我国重要铁矿资源的分布区，铁矿石主要开采区，也是我国钢铁工业的重要分布区。
According to the theory and method of particle flow code in two dimensions (PFC2D), the block caving law of natural caving mining method was investigated.
以自然崩落采矿法为研究对象，利用二维颗粒流数值模拟(PFC2D)的原理和方法，研究了自然崩落法矿体崩落规律。
Thus, different mining methods, different block structural parameter and different drawing way influence the stability of mining system.
因此，不同的采矿方法、不同的采场结构和回采方式，对地下采矿系统的稳定性都有着直接的影响。
We have got good economic benefit by adopting the apply of multiple ceiling coal mining in the Mine Block of Hegang.
在鹤岗矿业集团公司应用综采放顶煤采煤法，取得了良好的经济效益。
To block stoping, mining system design mainly includes design of block parameter, design of pillar's dimension, design of ore drawing sequence.
对于阶段空场法，采矿系统设计主要包括采场结构参数、矿柱大小、回采顺序等。
Coalface of Daizhuang Coalmine, the authors believe that the roof in lower seam will form the "block-bulk-beam" structure easy to fall after the mining of top ultra-close seam.
通过对岱庄煤矿4300采区工作面的顶板结构分析，得出了上部极近距离煤层开采后，下部煤层顶板形成极易漏冒的“块体-散体-梁”结构。
The characteristics and fundamentals of ore drawing control in block caving method are described and computer-based production scheduling for this mining method is studied in the paper.
本文阐述了自然崩落法放矿的特点及其放矿管理的基本原理，探讨了应用计算机进行自然崩落法排产的基本方法。
Through joint venture and cooperation of Shashuya west phosphate rock ore block formed mining enterprises, etc. at the same time.
同时通过合资、合作等形式新建了宜昌杉树垭磷矿西矿段等矿山企业。
The gray relation degree indicates that the series for adaptability of every mining method are surface mining, sublevel caving mining, block stop mining etc;
灰关联度计算表明，采矿方法适应性排序为：露天开采法、分段崩落法、阶段矿房法等；
This paper introduces the application of equi-block indexation method in geological condition evaluation of comprehensive mechanized coal mining.
介绍了等性块段指数法在矿井综采地质条件评价中的应用。
The ore-body block model is not only widely used in ore grade and reserve calculation, but used in the optimization of the final mining boundary and mining plan in the open pit.
矿体块状模型广泛应用于品位、储量计算，也可用于露天矿最终开采境界优化和开采计划优化。
For the installation of the balance of the unit block, with the mining, and underground load conditions changed, the balance has been affected.
对于安装平衡块的抽油机，随着开采的进行，井下负载情况发生了变化，平衡受到了影响。
By optimizing the sequence of panel mining stope of ore block, the mining sequence of the "two stope panels" is applied for the mine.
对阶段中盘区回采顺序进行优化，得出“隔二采一”的最佳开采顺序。
When the mining area enter the end stage, the optimization design of final block section and uphill pillar recovery are important.
采区进入收作阶段，最后块段与上山煤柱回收的优化设计、合理开采尤为重要。
Then, it is to remain some blasted ore to block the drift outlet at the last mining level to prevent the impact of air flows induced by the rock falling.
保持最下一层空场出矿分段的进路端部出矿口不敞空，防止冒落冲击危害。
Then, it is to remain some blasted ore to block the drift outlet at the last mining level to prevent the impact of air flows induced by the rock falling.
保持最下一层空场出矿分段的进路端部出矿口不敞空，防止冒落冲击危害。
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