实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
文中同时也对不同布放速度和回收速度下扬矿软管的受力进行了比较，对布放回收的速度及强度设计安全系数提出了建议值。
The effect of deploying velocity and recovering velocity on flexible riser is also discussed, and the suggested value of deploying velocity and safety factor to design the pipe are presented.
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