Hydraulic resistance coefficient formulas are derived according to a great number of flume experiments and relative theory analysis. 通过系列水槽试验和相关理论分析，提出了十字片梅花加糙的有效水深和水力阻力系数计算公式。
The standard value of ventilation resistance and coefficient of frictional resistance is very significant to the ventilation management of the mine as the basic data. 标准风阻值和标准摩擦阻力系数值作为矿井通风技术管理的基本资料对矿井通风管理具有重要意义。
