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- coal surface mining 露天采煤
- How is surface mining carried out? 露天开采是怎样进行的?
- The reasons of surface mining damage were analyzed. 摘要分析采矿活动对地表损坏的原因。
- A computer-aided cartography system for surface mine survey is proposed. 介绍了一个适用于露天矿测量的计算机辅助绘图系统。
- Taking ATB Surface Mine, Pingshuo Coal Company as an example, the feature of pit haulage system was analyzed in the transition period for mining-in-areas at flat-bedded or gently-inclined deposit. 以平朔煤炭工业公司安太堡露天矿为例;分析了开采近水平及缓倾斜矿床露天矿分区开采过渡期间开拓运输系统的特点、可能出现的问题和解决途径;提出了寻求该时期开拓运输系统优化的思路和方法.
- The functional groups related to the coal surface potentials and their changes by H2O2-oxidation were quantitatively characterized using FTIR. 用FTIR定量表征了与煤表面电位有关的官能团以及被H2O2氧化后的变化;
- Molecular design of structure:comparing with other PAMAM dendrimer core, cyclotriphosphazene has more functional groups on its coal surface. 多功能化多层次三聚膦腈核树枝状大分子 的合成、结构与性能研究 摘 要 (1)从分子设计看三聚膦腈核PAMAM树枝状高分子的合成 1.;组成结构的分子设计:三聚膦腈作为树枝状大分子的核心较其他核拥有更高的表面官能团密度。
- The selection of dragline is a key problem to be handled when applying dragline for open cast in surface mining. 露天矿应用拉斗铲倒堆工艺的关键问题首先要做好拉斗铲的选型。
- The pretreatment of high sulphur coal by electrolysis reduction, can reduce oxygen-containing functional groups on coal surface, and increase the hydrophobicity. 摘要采用电解还原法对高硫煤预处理后,使煤表面的含氧官能团减少,疏水性增强;
- The content of ash,the content of soluble mineral matters in CWS,the pore volume and the Zeta-potential properties of coal surface mainly affect the rheological behaviour of CWS. 与煤浆流变性有关的主要煤质因素为煤的灰分质量分数、煤中可溶矿物离子的溶出量、压汞仪所测煤的孔体积以及煤表面的动电位性质;复相关系数为0.;917;
- The machine pictured above is a bucket-wheel excavator used in modern surface mining. 上面影像中的机器就是被用于现代露天采矿的一辆勺轮开凿机。
- The environmental effect of surface mining on the groundwater was studied by leaching experiment and model forecast. 通过淋溶实验和模型预测对露天开采对地下水的影响进行了研究。
- On completion of charging, the coal surface is levelled in the oven by inserting a leveller bar through an oven end door and passing it along the coal surface. 加料后,通过一根从高炉底门插入的碾辊,使之沿煤表面移动,把煤扒平。
- Surface mining is the process of excavating mineral deposits directly from the surface of the ground without costly shafts or tunnels into the earth. 露天采矿就是不用在地下挖掘费用高昂的井巷而直接从地表采矿的方法。
- DUAN Tie-guan,MENG Jing-feng.Geology calamity fathering project of northern slope in Yima Surface Mine[J].Opencast Mining Technology,2006 (3):18-19. [3]段铁管;孟景风.;义马北露天矿北帮地质灾害治理方案[J]
- Applying this test to the Surface Mining Act, the Court found a rational basis for the congressional determination that surface mining affects interstate commerce. 法院把这一检验运用在《露天采矿法》中,发现了国会的确具有一定的合理依据,露天采矿影响州际的商业。
- The adsorption energy of H~+ on different coal surface, along with correlated chemical bond length, order, and net charge distribution were obtained by means of ZINDO quantum chemical calculation of model compounds. 通过对模型化合物的ZINDO量子化学理论计算 ;得到了H+ 在煤表面的吸附能、相关化学键的键级、键长和净电荷分布 .
- Using interface stage adsorbing model to establish a mathematic model for equivalent temporation adsorbing on coal surface by flotation collector so as to explore the rule is introduced. 介绍利用界面化而阶段吸附模型,建立了捕收剂在煤表面等温吸附的数学模型,以探索捕收剂在煤表面吸附的普遍规律。
- However, according to informed sources, the base of the surface mining is a separate楚健Kin-controlled enterprise, but it is behind the Jiangyin Changjiang Investment Group Co. 但据知情人士透露,中基矿业表面上看起来是一家由楚健健单独控制的企业,但背后却是江阴长江投资集团有限公司。
- It is also indicated that the hydrophilic oxygen-bearing groups and mineral matters on coal surface is beneficial to slurry pseudoplastic behavior although they are harmful to coal slurryability. 对浆体流变特性的研究表明,浆体的屈服假塑性与煤表面活性含氧官能团和矿物质的含量有关,煤表面较高的亲水性有利于浆体屈服假塑性的改善,从而使其对浆体性质的影响具有双重性。