查询词典 seam face

Ccording to the characters of disasters in gas-logged, inflammable and thick seam of coal face, by analyzing and comparing the advantages and disadvantages of the current ventilation method s, a new ventilation method with technique, economy and safety as a whole is brought forward.

针对高瓦期、易自燃厚煤层中高产高效工作面的灾害特征，通过分析比较现有的几种通风方式的优缺点，提出了一种集技术、效益、安全一全化的新型通风方式。

The coal seam of No.5102 face in Wuyang coal mine is steep,soft,and undulate.

在我国煤炭总储量中，厚煤层占40%~46%[1]，而在厚煤层赋存中，松软煤层又占了很大的比例。

Finally, the time series have been forecasted by the method based on the maximal Lyapunov exponent and an Artificial Neural Network model is set up for outburst prediction of coal seam tunneling face based on the chaos and fractal characteristics of time-series.

最后，建立了基于Lyapunov指数的时间序列预测模式和基于混沌和分形特征的神经网络预测模型。

Based on the structural characteristics of single roof key stratum in shallow seam longwall face, the structural model of the roof key stratum in a state of plasticity is established.

针对浅埋煤层单一关键层长壁开采时顶板岩体结构的破断特征，建立了顶板岩体关键层塑性状态下的结构模型。

The paper introduced the tes of the gas drainage method for the heading face in seam with outburst potential.

介绍了突出煤层掘进工作面瓦斯抽放方法试验，考察得出了巷帮长钻孔，并利用工作面深孔爆破技术来增大煤层透气性，抽放卸压瓦斯效果较为理想，大大减少了突出危险性，安全提高了煤巷单进。

Research on coal caving characteristics and caving technology for fully mechanized top coal caving mining face in thick seam with complicated parting structure;2. On the basis of mechanical property test of rock, the characteristic of combination system for coal and rock parting were thoroughly studied.

在煤岩力学性能试验的基础上，对煤矸组合系统的力学特性进行了较为深入的分析，揭示了含夹矸顶煤的破碎机理，建立了确定含夹矸层厚度上限值的方法，由此提出了提高含夹矸顶煤冒放性的主要技术措施，并在现场应用中取得了满意的效果。

The paper stated a gas movement process at the top even angle in seam roadway and coal mining face and the cause of gas accumulation in some coal area.

首先分析了瓦斯在井巷风流中的运移扩散方式，论述了煤层巷道及工作面上隅角瓦斯运移过程及其局部区域形成瓦斯积聚的原因，就目前所用的治理局部瓦斯积聚的措施进行了简要分

is first been used to describe the gap and root face of welding seam which is the important feature sizes and the welding current which is the most important controlling parameters MIG welding penetration and the welding time in quantity and the fuzzy math.

依据这一特征，应用模糊数学的方法对焊缝的重要特征尺寸间隙和纯边、MIG焊熔透的重要控制参量焊接电流以及焊接时间给予定量描述，并建立了视觉弧焊机器人焊接参数自动规划模糊数学模型。

Based on an example from Datong Coalmines Group,the paper analyses possibility and usage of heavy plow under the conditions of thin seam coal face with Two Hard Roofs and gives out some proposals.

通过大同煤矿集团公司采用全自动刨煤机系统开采薄煤层的实例，分析了在&两硬&薄煤层地质条件下进行刨煤机开采的可行性和作用，并针对性地提出了建议。

TURN OVER THE HATCH COVER AGAIN, WELDING THE FACE PLATES SEAM.

将舱盖翻正，焊接正面板缝。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。