• 本文通过矿井采掘工作过程分析,提出了不同类型矿井合理掘进的确定方法

    Based on analyzing the mine working process of coal cutting and driving, a method of setting the rational rate of coal cutting and driving in different mines is deyeloped.

    youdao

  • 不断优化巷道布置方式降低巷道掘进矿井开采设计过程中的一项非常重要任务

    Optimizing roadway arrangement way unceasingly, reducing the tunnel drivage ratio is an important task in the mine mining design process.

    youdao

  • 不仅有效降低了万掘进、降低了原煤成本而且大大提高了矿井资源回收取得了可观经济效益

    It's not only effectively reduced the 10,000 tons' tunneling rate and the cost of coal, but also greatly enhanced the recovery of the mine resources, and achieved considerable economic benefits.

    youdao

  • 使用方法能够提高煤炭采出10%以上提高巷道掘进速度1以上降低掘进成本30%。

    Adopting this method, coal recovery ratio can rise over 10% and roadway driving speed may increase over one times with its cost decreasing by 30%.

    youdao

  • 残余瓦斯压力检验以及掘进期间区域验证,均证明方法布置的预抽钻孔突效果有效

    The measurement method is demonstrated valid in outburst elimination by the examination of remnant gas pressure, pre-drainage rate and the zonal verification during the coal roadway driving.

    youdao

  • 建立出土密封舱压力变化数学关系,掘进密封舱压力控制提供参考模型

    The function of discharge rate and the changing rate of the chamber pressure is established, which provides the reference model of chamber pressure control for EPB machine tunneling.

    youdao

  • 建立出土密封舱压力变化数学关系,掘进密封舱压力控制提供参考模型

    The function of discharge rate and the changing rate of the chamber pressure is established, which provides the reference model of chamber pressure control for EPB machine tunneling.

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定