开采

It is a new topic that rule of ground movement in deep dip angle coal seam mining, the coal seam angle is one of important factor of deciding the rule of ground movement , the overlying rock of steep coal seam mining have different homogeneousness in horizontal orientation.

倾斜煤层是指煤层倾角在15°—55°之间的煤层，倾斜煤层开采地表沉陷移动规律是地表沉陷研究领域中的一个重要组成部分，煤系地层倾角是决定上覆岩层的移动和破坏形式及地表移动与变形程度的重要因素之一。

Moreover, it is worse for deterioration of water quality and raising in hardness and sulfate and other poisonous substance in ground waters.

不幸的是，由于过度开采地下水和采煤疏干，使地下水位持续性下降，娘子关泉群流量由多年的平均12.13m〓/s减少至近期的9.07m〓/s，更为严重的是，水质恶化、硬度和硫酸盐超标，以及其它毒性物质增高，生态环境恶化。

The forests provide the raw material for a timber industry, but many of French Guiana's natural resources defy easy exploitation.

森林为木材业提供了原料，但是法国法属圭亚那地方的自然资源很容易被开采。

A fortnight after soldiers loyal to Guinea's military ruler killed more than 150 protesters calling for civilian rule, a Guinean minister said that China had agreed to a deal worth $7 billion to exploit the country's minerals.

几内亚军事统治者杀害150多名呼吁平民统治的抗议者两个星期后，一名几内亚政府部长称中国已同意签署一份价值70亿美元的矿物开采协议。

Rock salt , or halite, is mined from natural deposits formed by the shrinking of seas during geological periods.

岩盐或岩盐，被开采自然沉淀在地质学的期间。

Main haulage roadway, main haulageway ...

为整个开采水平或阶段运输服务的水平巷道。

With regard to the by stages and by divisions mining characteristics in Nanfen Open Pit Iron Mine,we integrated the stripping of different stages and divisions with one another, and adjusted the elevation of haulageway,built short distance,low level haulageway,thus lowering the consumption of fuel on trucks,reducing the operation cost of the mine,resulting in favourable economine benefit.

针对南芬露天铁矿多分期多分区开采的特点，把不同分期分区的剥岩相结合，适时调整出入沟标高，建立近距离低标高运输通路，降低矿车的柴油消耗，避免追加矿山运营费用，经济效益可观，在同类矿山发展中有一定的参考价值。

With high quality ,thick reservoirs recovery of more than 60% and SORs of about 0.3~0.5 are obtained but in thinner, and in anisotropic reservoirs with lower oil saturations large quantities of steam are required to heat the depleted reservoir and the overburden .

蒸汽辅助重力泄油是开采超稠油油藏的一个比较有效的方法，对于均质厚层状稠油油藏，采收率可达60%以上，油汽比可达0.3～0.5，具有较高的经济效益。

It is valuable to the analysis for heavy oil exploitation and choice of electric heating system.

该计算为稠油开采分析和电加热参数的选择提供了参考。

Although hematite is no longer actively mined, it was once heavily mined in central and northeastern Alabama.

虽然赤铁矿不再积极开采，它曾经是地雷密布在阿拉巴马州中部和东北部。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。