瓦斯

The vast majority of China's coal mine gas, gas production in coal mine accident was the worst natural disaster in one of the accurate determination of coal seam gas pressure on the mine to the development of effective and reasonable gas control measures, forecasting coal and gas outburst danger , and are of great significance.

我国煤矿绝大多数是瓦斯矿井，瓦斯事故是煤矿生产中最严重的自然灾害之一，准确的测定煤层瓦斯压力对矿井有效而合理地制定瓦斯防治措施、预测预报煤与瓦斯突出的危险性，都具有重要的意义。

The research shows that gas concentration shows generally an increasing tendency along the working face airflow direction, from 0.095% to 0.18%, under the effect of gas drainage points, up-and-down changing locally; gas distribution in a transect of working face is unequal, under the effect of gas emission, ventilation and drainage, the gas concentration near coal wall is larger than that near goaf, which is a concave function distribution within a distance of 1876.5 m from the inlet of working face, after greater than 76.5m, which is a decreasing distribution from coal wall to goaf.

研究表明，该工作面瓦斯体积分数沿风流方向总体呈逐渐增加趋势，介于0.095%~0.18%之间，受瓦斯抽放点的影响，局部有起伏变化；工作面横断面瓦斯体积分数分布不均匀，受瓦斯涌出、通风和抽放的影响，靠近煤壁侧瓦斯体积分数要高于采空区侧，在距离进风口约18~76.5 m范围内为凹函数分布，大于76.5 m之后，从煤壁至采空区为单调下降函数分布。

On the basis of gas migration equation -Darcy Law,coal seam gas content equation -parabola equation ,ideal gas state equation and the continuity equation s of the gas flow,a dynamic model of gas unilateral flow in the coal seam is set .

根据基本假设，对煤层瓦斯流动规律进行了研究，运用瓦斯运动方程—达西定律、煤层瓦斯含量方程—抛物线方程、理想气体状态方程以及气体流动的连续性方程，建立了煤层单向瓦斯流动的动力学模型，并根据边界条件和初始条件，对动力学模型进行了求解，推导出煤壁单位面积的瓦斯涌出量的计算公式，分析了瓦斯涌出量的影响因素，利用测得的数据，进行了实例计算，并用vc编制了计算机程序。

The specialty of kvass drinking was introduced briefly. At the same time, we studied especially on the techniques of bread kvass , corn kvass and bean kvass .

介绍格瓦斯饮料的特点，以及以一些常见食品为原料制作家庭格瓦斯饮料的方法，重点介绍面包格瓦斯、玉米面格瓦斯和豆奶格瓦斯的制作方法。

In order to predict gas outburst accurately, mathematical geology model of coal and gas outburst was set up by the second theory of quantification , and which was applied and validated in Zhongmacun Mine of Jiaozuo Mining Group Company.

在焦作中马村矿应用研究结果表明：由于煤与瓦斯突出的分区分带主要受地质条件控制，运用数量化理论Ⅱ，可以借助已知瓦斯突出类型的若干地质变量，建立该矿井煤与瓦斯突出的数学地质模型，并预测未知区的瓦斯突出，这可提高瓦斯突出预测的准确性和可靠

CAUGHT IN THE MIDDLE \ 催泪瓦斯 A Palestinian demonstrator in a wheelchair was caught in tear gas fired by Israeli forces during a demonstration against a separation barrier in Bilin, West Bank, Friday.

上周五在约旦河西岸村庄Bilin，巴勒斯坦人举行示威，抗议以色列修建隔离。照片中是一名坐在轮椅上的巴勒斯坦抗议者受到以军发射的催泪瓦斯攻击。

Language. The result show that outburst coal structure can be divided according to features of geology, logging and physical mechanics; according to basic features and mechanism of gas outburst, with geology factors, mathematical geology model predicting gas content, emission and outburst can be established by quantification theory; the result of prediction for gas danger in Huainan Pansan mine by predicting model is relatively reliable, and the weaved map of gas geology can meet the need of production; the design of gas danger prediction software make prediction more convenient and fleeter.

结果表明，根据突出煤体的地质、测井和物理力学特征可以划分突出煤体结构；根据瓦斯突出的基本特征和机理，采用地质因素，利用数量化理论可以建立瓦斯含量、涌出量及突出预测的数学地质模型；利用预测模型对淮南潘三矿瓦斯危险性的预测结果较为可靠，编制的瓦斯地质图可以满足生产的要求；瓦斯危险性预测软件的开发使预测更为便捷和快速。

In the light of the Characteristics of high gas content in underground coal body,coal disenthralling the gas and gas accumulating in Sihe Coal Mine,this paper introduces KJ99 gas monitoring and controlling system ,and analyzes on the application effect of KJ99 gas monitoring and controlling system .

针对寺河矿井下煤体瓦斯含量高、煤炭释放瓦斯及瓦斯积聚的特点，介绍了KJ99瓦斯监测监控系统，分析了KJ99瓦斯监测监控系统的应用效果。

The study of methane-accumulation prevention and methane drainage theory and technology is the key for solving the problem of mine methane explosion accidents while the study of coal and methane outburst prediction together with the preventive measure sand technology is the basic guarantee to the controlling of coal and methane outbursts.

防止瓦斯积聚与瓦斯排放理论及其技术的研究，是解决矿井瓦斯爆炸事故发生的关键所在，而研究煤与瓦斯突出的预测及其防治措施技术是控制煤与瓦斯突出发生的根本保证。本文根据上述两方面存在的瓦斯问题，以理论、实验、计算机数值模拟和井下试验相结合的方法开展研究工作。

And it is concluded that the No.4-2coal seam is a mid-reserve and low-permeable seam, with surrounding rocks having low enclosed system and high permeability. And the coal seam's gas content is low, while its quantity in the roof-sandstone which is the main source of coalface's gas emission is high . The quantitative index used to analyze gas content and gas emission amount are pointed out systematically. And gray association analysis method is adopted to search the main factors affecting coal-bed content and gas emission amount.

系统提出了分析影响煤层瓦斯含量与采面瓦斯涌出量大小的量化因素指标，并将灰色关联分析原理引入煤层瓦斯含量与瓦斯涌出量主控因素的研究中，筛选出了煤层顶板含油指数，顶板砂泥岩比、4-2号煤层顶板以上煤系厚度3个因素指标为影响4-2号煤层瓦斯含量的主控地质因素；煤层埋藏深度，煤层瓦斯含量，煤层顶板含油气砂岩厚度，煤层顶板含油强度及工作面回采进度5个因素为影响综采面瓦斯涌出量的主控因素。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。