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。
It is one of the important research projects in the field of controlling water-inrush from roof that the calculating method of water flowing fracture height caused by coal mining.
煤层开采所引发的上覆岩层导水断裂带高度的计算方法是矿井顶板水害防治中的重要研究课题之一。
And the height of water flowing fractured zone in overburden strata is calculated by the empirical formula and is measured with a simple hydrological observation method according to drilling on spot.
用经验公式对覆岩导水裂隙带高度进行了计算，采用简易水文观测法对覆岩导水裂隙带高度进行了测定。
And the height of water flowing fractured zone in overburden strata is calculated by the empirical formula and is measured with a simple hydrological observation method according to drilling on spot.
用经验公式对覆岩导水裂隙带高度进行了计算，采用简易水文观测法对覆岩导水裂隙带高度进行了测定。
应用推荐