1) Track of top-coal moving
顶煤位移轨迹
2) top coal movement
顶煤位移
1.
Based on the study of the top coal movement of top coal caving faces and the analysis of the producing and developing of top coal fractures, top coal can be divided into different regions on the basis of fracture character with on the spot bearing pressure curve, top coal movement curve and movement rate curve.
通过对放顶煤工作面顶煤位移的实测研究及顶煤裂隙发生发展的理论分析,利用实测的支撑压力曲线、顶煤位移曲线和位移速度曲线,按裂隙性质对顶煤进行分区,针对不同特点的分区,提出了利用裂隙性质改变现行注水范围、钻孔布置方式的新方法。
3) earthing auto transformer moving drbit
中性点位移轨迹
4) motion track of roof beam
顶梁轨迹
5) cone vertex orbit
锥顶轨迹
1.
Study on the complete condition in circle-and-n-line cone vertex orbit;
圆加多条直线的锥顶轨迹的完全性条件研究
6) pulverized coal track
煤粉轨迹
补充资料:综采放顶煤
综采放顶煤:厚煤层煤炭开采技术之一。把原来分层开采的煤炭,一次采完。方法是,在煤层底部按传统方法开采,使上面的煤炭在矿压的作用下,自动落下来。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条