Adopting survey technology of double-head water-stopped machine flowing high of upward-inclined drillhole rock destruction rules were surveyed, development height of water conducted zone was gained.
采用井下仰斜钻孔双端堵水器导高观测技术对白庄煤矿综放开采条件下,覆岩破坏规律进行了实测,得出了导水断裂带的发育高度。
The experimental results show that a stable liquid distribution would be established after flowing through a given height of packed bed whether the initial distribution is uniform or not.
实验结果表明,不论液体初始分布的均匀性如何,液体流过一定高度的填料床后总会建立一个稳定分布。
A convenient and practical formula used to estimate the height water flowing fractured zone has been provided for underwater mining.
为煤矿进行水体下采煤提供了一种既方便又实用的预计顶板导水裂缝带高度公式。
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