【摘要】 应用二维离散单元程序UDEC,以黄麦岭磷矿采场岩质边坡为例,通过分析边坡质点位移矢量的变化规律,定义了边坡的极限平衡状态和破坏状态,提出一种新的确定安全速度阈值的方法,并确定了黄麦岭磷矿采场岩质边坡的安全速度阈值。分析结果表明,新方法确定的安全阈值与现场监测确定的阈值吻合得较好。因此,应用该法来确定边坡的安全阈值是可行的。更多还原

【Abstract】 The limited equilibrium and destroyed status of rock slope are defined based on the change of displacement vector by UDEC simulation. A new method to determine the safety threshold velocity of slope under explosion is proposed based on the definition. In addition, the safety threshold velocity of the Huangmailing Phosphorite rock slope is suggested. The obtained safety threshold velocity by the new method is in good agreement with the measurement. To determine the safety threshold velocity of rock slope by the proposed method is applicable.更多还原