... surface bench mining 露天台阶开采 surface mining method 露天采矿法 surface mining safety 露天采矿的安全 ...
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Numerical analysis implies that the mining method is an effective method to protect the surface in exploiting the high-value deposits.
数值分析结果表明，该采矿方法对高价值矿体开采时的地表保护是一种行之有效的方法。
On the basis of probability integration method for flat coal seam, the paper discusses surface subsidence random medium model for mining inclined seams with an Angle of a.
在水平煤层概率积分法的基础上，讨论了开采倾角为口的倾斜煤层的地表下沉随机介质模型。
Quantitative analysis of the surface movement induced by mining of underground useful deposit should be made based on the reliable data obtained by using the probability statistics method.
文中针对地下矿床开采引起的地表移动问题，提出了采用概率统计的方法来对地表移动进行定量分析，为地表变形分析提供了可靠的数据。
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