开采

It was the first time that full-mechanized caving mining was used under sea in the history of coal mining under sea in the world.

海域下煤层采用综放开采在世界海域煤炭开采史上还是首次。

In order to overcome some difficulties in mechanized kaolin mining, such as the weak roof, hard ore body, high toughness, it is necessary to apply long hole standing shot technology before the mining activity so as to improve the mechanical cutting efficiency and meet the demand of blocks degree.

为了解决煤系高岭土矿机械化开采存在顶板软弱，矿体相对煤炭质地硬，韧性大，矿石块度要求适中等难题，有必要在开采前采用预先对矿体进行充分合理的松动爆破，以提高机械切割效率及满足矿石块度适中的要求。

This process is called contour strip mining, as it follows the contours that connect points of the same height along a hillside.

这种方法称为山坡露天开采，因为这种开采是沿山坡的等高线进行的。

The resultindicated that, this method to decide strip mining parameter by integrated analysis is reliablehighly, it is one economical feasible method and has a good application value, it also hasimportant reference value regarding the mining area that has similar geological and the miningcondition.

结果表明，这种综合分析确定条带开采参数的方法，具有较高的可靠性，是一种经济可行的方法，具有较好的应用价值，对于类似地质和开采条件的矿区具有重要参考价值。

No longer was environmental policy a matter of balancing sound stewardship of our natural resources with the demands of a modern economy; you either supported unchecked development, drilling, strip-mining, and the like, or you supported stifling bureaucracy and red tape that choked off growth.

在现代化经济体的需求下，环境政策不再是对自然资源的均衡合理的管理；选民要么支持政府放开被管制的开发区、石油开采，矿产开采等等，要么支持令人窒息的官僚主义和限制发展的官方条款。

Subgradient projection method with variable diameter for optimization;2. The variable diameter deephole blasting was adopted to solve problems of open-pit high bench mining.

采用变直径深孔爆破工艺可较好地解决露天矿高台阶开采的爆破根底问题，对等直径和变直径 2种深孔形式爆破后岩体移动速度情况采用高速摄影手段进行了分析和研究，为在高台阶开采的矿山推广变直径深孔爆破提供一些有益的参考依据。

The influence of mining subsidence on land is one of important factors of mine environment impact.

矿山开采沉陷对土地产生的影响是矿山开采对环境影响的一个重要方面。

The effective mining method at small piece section of superhigh and complicated seam is explored.

探索有效的特厚复杂结构煤层小块段的开采方式，可提高效益，降低消耗，开采简单，便于生产。

Detailed researches are implemented to behavior of superincumbent strata in mining 45 degree coal seams using horizontal section top-coal caving in this paper.

本文针对45°特厚煤层水平分段放顶煤开采后的上覆岩层移动破坏规律进行了深入研究，指出45°特厚煤层开采后老顶破断后在一定层位形成了沿倾斜方向的铰接岩梁结构，即倾斜岩梁。

It is a highly serious problem of geotechnical engineering that underground mining arouse terrane movement and ground subsidence, which, at the same time, causes a great deal of ground fissure from coal mining.

煤层的地下开采引起煤层上覆岩层移动变形和地表沉陷已经成为一个非常严重的岩土工程问题，同时伴随着地表沉陷在开采范围内会产生大量的地表裂缝。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。