瓦斯

Based on theories of multiphase fluid mechanics and mine ventilation theories,the model of drivage tunnel was established by using the method of similar experiment,the characteristics of ventilating current and gas concentration distribution in drivage tunnel were studied by the experiment,and based on the above characteristics the flow characteristics of gas transportation multiphase flow field were majorly analyzed.

基于多相流及矿井通风理论，利用相似性实验方法，搭建了煤矿掘进巷道模型，并通过模型实验获得了掘进巷道内风流流场和瓦斯浓度分布场的特征信息。结合上述两方面的特征信息重点分析了巷道内瓦斯运移多相流场的流动特性，所采用方法对于矿井通风系统及瓦斯监测系统的设计具有较强指导意义。

The article mainly discusses tunneling when there is more gas in the coal layer,utilizing the hish layer cracks using the hole in the high layer,in this way of inhaling the next layer gas as tunneling,the problem of the gas consistency above the ordinary level in some workplace because of the gas gushing form the next layer is sloved.

主要阐述了在高瓦斯煤层掘送时，利用高孔裂隙，采用高抽放钻孔、边掘边抽的方法，解决邻近层瓦斯涌出造成工作面局部瓦斯超限的问题。

Based on the research, the author points out the distribution of the disturbed coal along the coal bed is caused by the coal-seam slip; presents multistratified and multi-staged; developed in some specific coal beds; the value of Ng of the disturbed coal possess dual character in the coal-gas outburst prediction.

分析了影响煤层瓦斯分布和瓦斯突出的地质因素，重点研究了煤体结构和地质构造标志；提出了突出煤层临界厚度计算方法、瓦斯动力现象综合分类方案和研究区突出防治措施建议。

According to the property of mud of gas of plum steel blast furnace, undertook to its zincic experiment studies receiving iron to fall, no matter use magnetic separation,the result makes clear or classification the law all can reclaim from which content of major iron ore and purify is major zinc, stock of will tall zinc, low zinc undertakes effective depart, iron concentrate yield and grade all achieve 52% above, iron metal reclaims rate 70%, take off zinc to lead 50% above.

梗概： 介绍了梅钢高炉瓦斯泥的性质、试验情况及结果，国内外处理使用含锌高炉瓦斯泥的方法。根据梅钢高炉瓦斯泥的性质，对其进行了收铁降锌的试验探究，结果表明无论用磁选还是分级法均能从中回收大部分铁矿物并去除大部分锌，将高锌、低锌物料进行有效分离，铁精矿产率和品位均达到52%以上，铁金属回收率70%，脱锌率50%以上。

The phase-space of a gas dynamic system can be rebuilt by using the time series measurement of gas concentration in the working environment of a mine. It is discovered from fractal analysis that the variation of a gas dynamic system in an underground mine posse...

通过分形分析发现井下瓦斯动力系统的变化具有混沌特性，从而揭示了瓦斯动力系统安全状态变化遵循某种结构化规律，理论上其状态的变化是可以被确定性预报的，从而为瓦斯爆炸灾害系统的辨识与控制提供了理论依据。

The simulation result demonstrate that the mining differential pressure has a great impact on the flow velocity the porosity pressure and the pressure gradient of gas in fissured coal.

模拟结果表明，采动压力差对瓦斯流动速度、孔隙瓦斯压力及瓦斯压力梯度都有很大的影响。

In the first visible one, the methods for developing an information system for prognosticating gas outburst on the base of gas and geological theories are probed into, which is aimed to manage and apply gas and geological information effectively, and to offer the spot engineering and technical personnels decision supports needed for safety management.

第一条明线主要致力于以瓦斯地质学为基础对煤与瓦斯突出区域预测信息系统开发方法的探讨，旨在实现对瓦斯地质信息的有效管理和应用，并为现场安全管理和工程技术人员提供必要的决策支持。

Using the RFPA~(2D)-Flow to simulating the process of the gas drainage in low air permeability coal bed by slot ting, it prove that slot ting is an efficient technique to reduce the risk of coal and gas out bursting.

运用岩石破裂分析系统(RFPA2D-Flow)模拟了割缝排放低透气性煤层内瓦斯的过程，验证了割缝排放煤层内瓦斯是降低低透气性煤层煤与瓦斯突出危险的有效方式。

The method of drilling by the wind coal drill ,the coal body produces the crack and releases gas under the conditions of the dynamic pressure function of mining field,then draining gas with drainage facility to govern the local high gas region at working surface are introduced.

介绍了利用风煤钻施工钻孔，在采场动压作用下煤体产生裂隙释放瓦斯，然后利用抽排设施抽放瓦斯，治理采面局部高瓦斯区域的方法。

Mine, the gas content constant value line of the 13 - 1 seam in Xinji No.

分析了影响瓦斯赋存的地质因素，得到了瓦斯赋存和分布规律，对指导矿井采掘接替、通风设计及采取有针对性的瓦斯综合治理有着重要的现实意义。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。