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矿井大气
相关语句
  mine atmosphere
     Transmission characteristic of infrared radiation through mine atmosphere
     矿井大气中红外辐射传输特性
短句来源
     Finally,the spectrum transmittance of infrared radiation through mine atmosphere in 1.0~14.0 μm wave band was calculated by an example.
     举例计算了矿井大气中红外辐射在1.0~14.0μm波段的光谱透过率.
短句来源
  mine air
     Theoretical Study of Gas Migration in Mine Air
     矿井大气中瓦斯迁移的理论研究
短句来源
  相似匹配句对
     Theoretical Study of Gas Migration in Mine Air
     矿井大气中瓦斯迁移的理论研究
短句来源
     Transmission characteristic of infrared radiation through mine atmosphere
     矿井大气中红外辐射传输特性
短句来源
     atmospheric corrosion
     大气腐蚀
短句来源
     Maagnanimous Beijing
     大气北京
短句来源
     TX New Technology for Mine Reconstruction and Rebuilding
     矿井改扩建技术
短句来源
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  mine atmosphere
For the first time, concentrations of the long lived radon progenies 210Pb, 210Bi and 210Po were measured in the mine atmosphere of the so called "healing gallery" in Badgastein, Austria, a region famous for its radioactive springs.
      
Estimating the "latent energy" of radon daughter products in a mine atmosphere
      
Deterministic-probabilistic models for predicting mine atmosphere parameters
      
The solution algorithm for the non-stationary problem of gas admixture flow in the mine atmosphere is developed based on an ideal displacement model.
      
The optimum wavelengths are determined for various mine atmosphere composition measurements.
      
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  mine air
A gas chromatographic method for the separation of alkanes and alkenes present in coal mine air has been developed using modified alumina columns.
      
Comparison of the criteria of nocivity of the dusty mine air in Western Europe
      
Use of absorption refrigerating machines in mine air-conditioning systems
      
Predicting the mine air temperature in a mining-out working with stoping in floors and concrete stowing of the worked-out area
      
Thermodynamic features and operation regimes of the elements of mine air-conditioning systems with stationary coolers
      
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The usefulness of radon-exhausting from mined-out area is explained with exemplication. Also, the advantages of radon-exhausting, i. e, reducing the mine air pollution, increasing the effective air quantity of the mine ventilation and increasing the effectiveness of mine fans are discussed. More, the technico-economical performances of mine ventilation are improved.All things conspired towards the suggestion that the radon-exhausting from mined-out area should be applied widely in uranium mines.

本文用三个实例说明采空区氡抽排的实用性,并论述了采空区氡抽排的优点:可减轻矿井大气的污染;能增加矿井通风的有效风量,能提高矿井扇风机的效率,还可改善矿井通风的综合技术经济指标。作者建议采空区氡抽排应在铀矿山广泛推广使用。

In metal mines containing traces of radon, one of the main reasons of polluting the in-take air current usually comes from the emanation and accumulation of radon in the mined-out area. In this paper the accumulation and varaition of radon in the mined-out area are theoretically discussed and calculated, and practical observations and verifications are described. The reason for the variation of radon concentration in the mined-out area is made clear, the method of prevnting the radon contamination of in-take...

In metal mines containing traces of radon, one of the main reasons of polluting the in-take air current usually comes from the emanation and accumulation of radon in the mined-out area. In this paper the accumulation and varaition of radon in the mined-out area are theoretically discussed and calculated, and practical observations and verifications are described. The reason for the variation of radon concentration in the mined-out area is made clear, the method of prevnting the radon contamination of in-take air current by changing the ventilation pressure as well as the condition of pressure distribution is suggested, and the effective result accomplished in mines by using these methods is also noted.

在含铀金属矿山,采空区中氡的析出和积累常常成为污染矿井大气的主要氡源,本文对采空区中氡的析出和积累作了理论上的论述和计算,并进行了实地考查和验证。阐明了采空区中氡浓度增高和污染井下大气的原因,提出了借助于通风压力分布以防止采空区中氡污染矿井大气的方法,并介绍了这些方法在矿山使用中所取得的实际效果。

In the course of surveying and calculating the ventilation resistance in mine, potential pressure energy needs to be worked out by using the value of the relative level at the surveying spots. It is usually found according to geological in the process of designing shaft building, developing and mining work. However, the accurate and complete value of level at surveying spots can not be attained because of some object factors. For example, the change of scheme during repairing and construction. Therefore, some...

In the course of surveying and calculating the ventilation resistance in mine, potential pressure energy needs to be worked out by using the value of the relative level at the surveying spots. It is usually found according to geological in the process of designing shaft building, developing and mining work. However, the accurate and complete value of level at surveying spots can not be attained because of some object factors. For example, the change of scheme during repairing and construction. Therefore, some trouble and regrets rise. Base on the thinking method of liquid abnormal redundancy flow theory and atmospheric thermodynamic theory, the authors analyze and study the character of atmospheric pressure system and the criterion, design principle of mathematical model about atmospheric depth measurement and surveying instrument is raised.

矿井通风阻力参数测算过程 ,需利用测点相对标高值计算位压能 ,传统的做法是从建井、开拓、采掘等施工设计时的地质资料中查找 ,因修复及施工中改变方案等客观因素 ,造成无法查得准确和齐全的测点标高值 ,给测算带来诸多麻烦和遗憾 .基于流体分层异重流学和大气热力学理论的研究成果与思维方式 ,分析研究了矿井大气压力系统的特征及矿井大气流动系统分层的准则 .依据分层准则 ,提出了关于气压分层测深数学模型及其测量仪表的设计原则

 
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