free face [矿业] 自由面 ; 直坡 ; 崖壁
Free Face Off Maker 抠图软件 ; 免费抠图变脸工具
prop-free face 无支柱回采工作面
single free-face 单临空面
single free face 单自由面
free face conditions 自由面条件
direction of free-face 临空面方向
iso-resistance free face 等阻力自由面
For high rock slopes, especially with the long and huge joints developed, the failure of rock mass is always caused by the cutting of discontinuities and free face.
在岩质高边坡，特别是长大节理发育的岩质边坡中，岩体的失稳破坏常常表现为由几组结构面和临空面切割的岩块失稳。
参考来源 - 岩质高边坡关键块体的确定及稳定性评价研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Planar ray theory is used to deduce the analytic solution of the elevation amplification effect on a single-free-face slope in seismic engineering.
利用平面射线理论和方法，推导出单面边坡地震的高程放大效应理论解，可用于描述边坡临空面对地震波的反射，反映边坡的高程放大效应。
The paper analysed the process of smashing rock near a explosion source by shock wave and stress wave and the reflecting action of stress wave on the free face.
分析了集中药室爆破时，爆破冲击波和应力波对药室附近岩体的破碎过程及应力波在自由面的反射作用。
According to the time to form the blasting free face and the time for the broken rock flying, the paper discussed the rational delay time of each functional borehole in deep borehole blasting.
根据爆破自由面形成的时间和破碎岩石飞行的时间，探讨了深孔爆破各作用炮眼的合理延期时间；
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