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- Based on the analyzing of parameter about combinatorial key stratum, the formulae of calculating the roof weighting step is given in this article. 在分析组合关键层有关参数的基础上,推导出了组合关键层初次来压步距和周期来压步距的计算公式。
- The study indicates that according to the formulae of combinatorial key stratum, coal roof weighting step in the 1203 face in Da-liu-ta mining is co the observation value. 结果表明,以该修正的组合关键层破断距公式计算的大柳塔1203工作面的初次来压步距与实测非常接近。
- roof weighting step 来压步距
- The expert system of weighting on the basis of these knowledge can satisfy the demand of roof weighting forecasting in longwall face. 架起了“自动预报”和“预报机理”之间的桥梁,经实例验证,该专家系统能满足长壁工作面来压预报的要求。
- The loci of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived. 利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置,得到了顶板岩体关键层的最小破断跨距。
- The Ion of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived. 利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置,得到了顶板岩体关键层的最小破断跨距。
- With the advancing of work face, the cracks will be induced and then impenetrate with each other in roof, and result in the rupture of roof and roof weighting. 摘要随工作面的推进,顶板要产生裂缝、裂缝贯通、破断,然后来压。
- The pillars have to support the weight of the roof. 这些柱子须承受屋顶的重量。
- She and I can't live under the same roof. 她和我不能住在一起。
- These pillars carry the weight of the roof. 这些柱子支撑著屋顶的重量。
- Rafters carry the weight of the roof. 椽木支撑住屋顶的重量。
- The weight of snow collapsed the roof. 积雪的重压使屋顶倒塌了。
- The stone made a dent in the roof of my car. 我的汽车顶让石头砸了个坑。
- Snipers shot at the invaders from the roof tops. 狙击手从房顶上向侵略者射击。
- The rain water drips from the roof. 雨水从屋顶滴下来。
- During the gale roof tiles came hurtling down. 在暴风中屋顶的瓦片哗啦啦地落了下来。
- Can you shoot up at the bird on the roof? 你能射中房顶上的那只鸟吗?
- The rain drip down from a leak in the roof. 雨水从屋顶的裂缝中滴漏下来。
- The chair sagged down under the fat man's weight. 椅子经这胖人一坐便压弯了。
- The rain is leaking in large drop through the roof. 雨正大滴大滴地从屋顶漏下来。