开采

In order to ascertain a reasonable strip mining project for the coal mining under villages with thin bedrocks under the thick alluvium in Linhuan, the characters of surface subsidence in strip mining were studied by numerical simulation method based on discrete element.

为了确定临涣煤矿厚表土层薄基岩下合理的村庄压煤条带开采方案，采用离散元数值模拟方法研究厚表土层薄基岩下条带开采地表沉陷特征。

As these supplies were used up, big drillers looked for similar formations in other countries.

当这些资源被开采完，大型开采公司又在其他国家寻找类似的天然气土层。

As these supplies were used up, big drillers looked for similar formations in other countries.

这些储备被开采完之后，大型开采公司又到其他国家寻找类似的储备。

Denmark, would-be extractors will also have to take into account the determination of local people to claim a share of the action.

但是就像考虑加拿大，美国和丹麦的国家利益一样，开采企业也要顾全当地人对开采行动的投诉。

This article according to mine pit coal mining to cause the principle which the mine shaft coal bed gas pressure reduces, taking the PanJiang mining area mining coal bed as the research object, it has analyzed the reserves and the saves condition which the PanJiang mining area coal bed was mad

本文根据矿井煤炭开采引起井下煤层气压力降低的原理，以盘江矿区开采煤层为研究对象，分析了盘江矿区煤层气的储量和赋存条件

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

Description : Gold miner Vegas - Gold Miner is back with a brand new action adventure!

描述：黄金开采拉斯维加斯-黄金开采是回到同一个全新的动作冒险！

Gold miner joe - Help Gold Miner Joe explore the legendary four-shafted gold mine in this cartoon-style jump and run game.

黄金开采乔-帮助黄金开采乔探索传奇4 - s hafted金矿在这方面的漫画式的跳转和运行游戏。

At first, when oil was discovered under the ground, the gas was not considered useful.

起初，人们只开采石油，认为天然气毫无用处，反而是石油开采的又一障碍。

Shanxi was an important province of north China which largely produced iron in Song, Yuan, Ming, Qing dynasty. There were a lot of places to exploit iron ore, and exploitation scale was increasing. The technique of smelting iron was generally improved and pig iron outputs increased. All kinds of handworked ironworks not only satisfied the production and living requirement of this province, but also were sold to other provinces, even abroad. Smelting iron industry became an important handicraft industry of this province, which directly promoted the economical development of Shanxi.

宋元明清时期，山西是北方重要的产铁大省，铁矿开采点多，开采规模扩大，冶铁技术得到普遍提高，生铁产量增加，各种手工铁制品不仅满足本省生产生活需求，而且远销其它省份甚至国外，铁冶业成为本省重要的手工业部门，直接推动着山西经济的发展。

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。