矿井

Mine drainage pump required, in beneficiation, smelting and rolling process, the need to pump to the water supply first and so on.

矿井需要用泵排水，在选矿、冶炼和轧制过程中，需用泵来供水先等。

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。

In the process of draining gas in gob area of a coal mine, the stability of surface drilling well and gas drainage effect were improved by studying different factors affecting the drainage effect and the term of service with the method of numerical simulation of computational fluid dynamics and field test.

在应用地面钻井抽采矿井采空区瓦斯的过程中，为了提高地面钻孔的稳定性及瓦斯抽采效果，采用CFD数值模拟和考察试验的方法研究了影响地面钻孔抽采效果和服务期限的不同因素。

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

在每位玩家的抽牌步骤开始时，若嚎叫的矿井并未横置，则该玩家抽一张牌。

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

在每位牌手的抓牌步骤开始时，若嚎叫的矿井并未横置，则该牌手抓一张牌。

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

在每位牌手的抓牌步骤开始时，若嚎叫的矿井并未横置，则该牌手额外抓一张牌。

The-430m track drift in Xuchang Coal Mine is a common passage for pedestrian and track transport.

针对许厂煤矿的-430m轨道运输斜巷行车兼做行人的特点，为满足行车不行人，行人不行车的规定，提出了一种新型矿井轨道斜巷人车安全闭锁装置。

Derformation and convergence survey were made on the drift of Qiaohou Salt Mine withthree techniques.

叙述了对乔后盐矿井下巷道进行变形和收敛观测的结果，分析了观测数据，主要结论：自60年代以来该矿岩盐巷道的收敛速度已明显加快，垂直方向的日平均收敛量已由60年代初期的约0。

Used CFD software FLUENT, the three dimensional simulation to piston windorganization at the mine transportation drift were studied. The speeds, static pressuredistribution map at various characteristics sub-plane under different condition were obtained.The entire flow field was divided to different sub-area. The speeds, static pressure changingtendency at the typical position were analyzed. Mechanics origin of the piston wind wasdiscussed.

7采用计算流体力学软件FLUENT对矿井运输巷道内活塞风的风流组织进行了三维数值模拟，得出了不同状态下各特征子平面上的速度、静压分布，并对巷道内空气流域进行了分区，分析了典型位置上的速度、静压变化趋势，探讨了活塞风形成的力学原因。

Basing on the theory of two-phase flow of gas and solid, and the characteristics of coal mine driving working face , using the discrete phase models of computational fluid mechanics to simulate the dust concentration during the ventilation process of coal drift driving with exhaust ventilation.

根据气固两相流理论，针对矿井掘进工作面的特点，采用计算流体力学的离散相模型对掘进工作面通风过程中粉尘浓度进行数值模拟，总结抽出式通风掘进巷道中粉尘浓度的沿程分布及变化规律。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。