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   mining operations 的翻译结果: 查询用时:0.009秒
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mining operations
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  采矿作业
     The occurrence of large fragments and toes not only affect the efficiency of shovelling equipment seriously but also increase secondary blasting quantity and influence the progress of other normal mining operations.
     大块和根底的出现,不仅严重影响铲装设备的效率,也增加了二次爆破的工作量,而且还影响到其它采矿作业的正常进行。
短句来源
     Applying rock mechanics theory, analyze the earth stress of mining slow-declining orebodies using the method of downward horizontal layeriddng back-fill mining, in time to take measures, to promote safety of mining operations and to obtain good economic profit at the same time.
     应用岩石力学理论 ,分析缓倾斜矿体用水平下向分层充填采矿法开采地压应力 ,及时采取措施 ,提高采矿作业的安全性 ,同时也取得良好的经济效益。
短句来源
     Diesel driven LHD units are highly efficient ore hauling equipment in underground mining operations.
     柴油铲运机是地下采矿作业中的高效运矿设备。
短句来源
     The mining operations are heavily regulated by Government authorities and representatives of community groups.
     采矿作业受政府当局和社区组代表严格监督和管理。
  “mining operations”译为未确定词的双语例句
     THE APPLICATION OF STEEL - CORE BELT CONVEYERS IN MINING OPERATIONS
     钢绳芯胶带在矿山运输中的应用
短句来源
     DEVELOPMENT AND USE OF DUMP TRUCK WITH PAYLOAD 12 TON FOR UNDERGROUND MINING OPERATIONS
     12t级地下自卸汽车的应用
短句来源
     The feasibility of monitoring the locations and vital statistics of equipment and personnel in surface and un-derground mining operations has increased with advancements in radio frequency identification (RFID) technology.
     随着射频识别(RFID)技术的发展,露天及地下采矿设备和作业人员位置和关键数据的监测的可行性研究也取得了进展。
短句来源
     Cluster analysis can be used not only as a separate technique to discover the information about data distribution, but also as the preprocessing of other data mining operations, therefore it is very meaningful to study how to boost the performance of clustering algorithm.
     聚类分析作为数据挖掘系统中的一个模块,既可以作为一个单独的工具以发现数据库中数据分布的深层信息,也可以作为其他数据挖掘分析算法的一个预处理步骤,因此研究如何提高聚类算法的性能具有重要的意义。
短句来源
     and provide at any time advisory opinions from the view point of geophysics to guide safe mining operations.
     随时从地球物理学角度提供咨询性意见,指导矿山安全开采;
短句来源
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  相似匹配句对
     SCIENTIFIC ANALYSIS OF SAFETY IN MINING OPERATIONS
     试论我国矿山安全科学
短句来源
     ROCK MOVEMENTS DUE TO MINING OPERATIONS
     开挖引起的岩体移动
短句来源
     Multimedia Mining
     多媒体开采初探
短句来源
     Joint Operations
     联合进攻——风暴行动
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     WEB MINING
     Web挖掘
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  mining operations
Because of the mining operations, an open cast mine of approximately 27 × 104 m2 will be produced and the material removed will constitute approximately 14 x 106 tons, occupying an estimated area of 50 x 104 m2.
      
A description of the different mineral resources and wastematerials is given, including information on the related technology and the status of thedumping and mining operations, respectively.
      
In Lusatia (eastern Germany), large-scale open-cast lignite mining operations generated spoil dumps widely consisting of acidified, phytotoxic substrates.
      
The deposit at Lime Acres and mining operations of the PPC Lime Ltd.
      
Analysis of sediment samples collected from the Coeur d'Alene River in northern Idaho, USA, indicates that the main stem and the south fork of the river are contaminated with heavy metals (Cd, Pb, Mn, and Zn) from the local mining operations.
      
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China is a large country, with abundant resources and a long history. Accord- ing to legend, in Shanxi Province, mining for copper dates as far back as 5300 years ago. It has been verified by modern archaeology that in Gansu Province copper mines and lead mines were worked not later than 4000 years ago. During the Shang Dynasty (1600 B. C. -- 1100 B. C.), extensive mining was carried out for copper, tin and lead, and covered a very broad area from Inrier Mongolia in the north to the Five Mountain Ranges in the...

China is a large country, with abundant resources and a long history. Accord- ing to legend, in Shanxi Province, mining for copper dates as far back as 5300 years ago. It has been verified by modern archaeology that in Gansu Province copper mines and lead mines were worked not later than 4000 years ago. During the Shang Dynasty (1600 B. C. -- 1100 B. C.), extensive mining was carried out for copper, tin and lead, and covered a very broad area from Inrier Mongolia in the north to the Five Mountain Ranges in the south and from Gansu Province in the west to Shandong Province in the east. During the Western Zhou Dynasty government officials were appointed for the organization and management of the mining industry. In the earliest mining operations, stone implements were used. In the excavation of the Linxi Ancient Copper Mining Site in Inner Mongolia, more than 1060 pieces of buried stone hammers and other mining implements were found. Mining at this ancient site possibly began in the Western Zhou Dynasty and continued to the Tang and Song Dynasties. Thirty-eight open-pits were found there, the largest pit had a maximum length of more than 500 meters and a maximum depth of 17 meters. Large amounts of furnace slag were also found, indicating a comparatively large scale of operation. During the Eastern Zhou Dynasty (known as the Spring and Autumn and the Warring States Periods), the mining of iron ore became common. The Qi Kingdom carried out the policy of "nationalization of mountain and sea," which encouraged the development of mining and metallurgical enterprises, and the mining of various metal minerals became common. Some of these were recorded in detail in the ancient book "Shan-Hai-Jing" (the book of Mountain and Sea). This book recorded more than ten kinds of metallic mineral products, 176 old mining sites, and information about various types of ore deposits and metallic mineral association. This book is among the world's oldest literature on mining. Since 1974, an ancient underground copper mine of the Zhou Dynasty has been explored by excavation at Tonglushan, Hubei Province. This find has been of important significance in the study of the history of ancient mining and social de- velopment in China. At this ancient mine site many vertical shafts were sunk since the Western Zhou Dynasty. The depth of the shafts reached more than 50 meters during the Warring States Period. The hoisting, drainage and ventilation problems of underground mining were solved successfully. The windlass used for hoisting was much improved from those commonly used and more scientific. Through the development of many types of timber-sets, the ancient miners successfully overcame the difficulty of mining in fissured ground, thus greatly advancing the technique of underground mining and contributing to the development of mining in ancient China.

由近代考古工作证明,我国最晚大约于四千年前,就在现今的甘肃省开始开采铜矿和铅矿。商代(公元前1600~1100年)铜、锡、铝矿已大量开采;西周时设有矿官,负责矿业的组织管理。文章着重引证了内蒙林西露天古铜矿和湖北铜录山古铜矿井的出土文物资料,说明我国开采矿业历史悠久,古代劳动人民在采矿技术方面有很多发明创造,做出了很大贡献。

Because of increasing development of underground projects, Such as mine excavation, underground railway, underground storage etc, more and more attention has been paid to the surface movements and rock movements The fundamental equations of ground movements due to the elementary unit excavation are derived on the basis of theory of probability, By extensive theoretical studies, many practical and significant problems, such as the surface movements resulting from open cut mining and near—surface underground opening,...

Because of increasing development of underground projects, Such as mine excavation, underground railway, underground storage etc, more and more attention has been paid to the surface movements and rock movements The fundamental equations of ground movements due to the elementary unit excavation are derived on the basis of theory of probability, By extensive theoretical studies, many practical and significant problems, such as the surface movements resulting from open cut mining and near—surface underground opening, and the surface movements due to mining operations have been discussed in delail. A number of theoretical equations for computating the surface movements and rock movements are also developed, and many results of field measurement are given. In comparison with the measured results, the theoretiaal computation is in satisfactory agreement with reality.

由于地下工程日益增多,诸如矿山开发、地下铁道、地下洞库及隧道等等,导致对开挖引起的岩体及地表移动问题研究的日益重视。以概率论为基础,本文导出了单元开挖引起的岩体移动的基本方程式。据此,讨论了许多具有实际意义的问题;露天开挖引起的地表移动、浅部开挖地表移动、地下开采造成的地表移动及岩体内部移动等。文中导出了大量的计算岩体及地表移动的理论分式,给出了许多矿山的现埸观测结果,并把两者作了对比,结果十分令人满意。

The room-and-pillar method has been used with regular pillars for many years at the South and North Mines of Xikuangshan Mining Administration in order to safe- guard the river bed and surface buildings, and as a result, a lot of safety pillars have had to be left over. Only the safety pillars underlying the river bed below the №6 level at South Mine account for 15-30% of total ore within this level. In addition, large open areas being left without any support caused several violent large scale surface...

The room-and-pillar method has been used with regular pillars for many years at the South and North Mines of Xikuangshan Mining Administration in order to safe- guard the river bed and surface buildings, and as a result, a lot of safety pillars have had to be left over. Only the safety pillars underlying the river bed below the №6 level at South Mine account for 15-30% of total ore within this level. In addition, large open areas being left without any support caused several violent large scale surface subsidence. To avoid this, the mining method with cement filling has been tested and introduced at these mines. The method features two mining steps: the first being mining the ore ribs follo- wed by cement filling, while the second mining the rooms followed by tailing filling. Mining areas are divided along the stroke every 60-120m, each area subdivided into 6-10 ore ribs and rooms. Stoping starts from centre and advances towards the side wings with the ore ribs to be recovered first. Rooms are to be mined after the ore ribs on both sides are cement-filled to join the roof. Long term observations have shown that the average monthly surface subsidence has been only 2mm since the filling method has been adopted for recoveing the safety pillars under the river bed at the south mine, which cannot do any harm to mining operation and surface buildings. The recovery has been raised by 12-13% compared with the room-and-pillar technology, resulting in production of more 1670 tons anti- mony foods conseanently, more profits have been gaimed in spite of additional expenses for filling work.

锡矿山矿务局所属南北两个矿山,多年来一直沿用留规则矿柱的房柱法。为了保护河床和地表建筑物,留下了大量的保安矿柱。仅南矿六中段以下,河床保安矿柱就占中段矿量的15~30%左右。此外,还因遗留大量空区未及时处理,先后曾发生过几次剧烈的大面积地压活动。为此,试验井推广了胶结充填采矿法。该法的特点是实行两步骤回采:第一步回采矿壁,采后进行胶结充填;第二步回采矿房,采后以尾砂充填。沿走向每隔60~120米划分采区,每个采区再划分为6~10个矿房和矿壁,回采顺序自中央向侧翼,先采矿壁,待两侧矿壁胶结充填接顶后,再回采矿房。自南矿用胶结充填法回采河床保安矿技以来,经长期观测地表平均月下沉速度只有2毫米,对矿山生产和地表建筑物都不会造成任何危害。与房柱法相比,回采率提高了12~13%,多生产锑品1669吨,除支出多增加的充填费用外,还使企业获得了更大的盈利。

 
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