Slope safety factor accelerates its degression with prestressing force loss and multiform anchor invalidation.The reconstructing should start soon after the slope was weakened by anchor invalidation.

• 边坡安全系数随预应力损失和各种形式的锚索失效呈加速下降的趋势，对锚固失效后边坡的综合处治宜早不宜迟。