引导式柔性网系统是一种高效的柔性防护结构系统，结合原位足尺冲击试验，研究揭示了系统的防落石冲击耗能机制。基于构件受力、变形及耗能特性，研究了系统构成原理，建立了系统防护耗能机理模型。基于匀质坡面碰撞能量恢复系数为常数的假定，提出了系统干预下落石残余动能计算方法。开展了落石原位足尺冲击试验，研究了在有、无系统防护下的落石运动特性，并基于落石能量变化特征定义了落石能量衰减率及系统影响因子。研究表明：在防护系统干预下，落石与山体的碰撞次数平均增加至2倍以上，落石最大弹跳高度下降了82%，落石能量衰减率由69.7%增加到89.2%，落石残余动能降幅达65%，落石能量衰减的系统影响因子为0.35，系统能够有效压制引导落石运动，增加落石耗能。提出的落石残余动能计算方法得到的系统防护性能指标与试验计算结果基本一致，该计算方法可用于估算防护条件下的落石残余动能。

A guided flexible protection system is an efficient flexible protection system.Based on the in-situ full-scale test,  the energy dissipation mechanism of the system against rockfall impact was revealed.According to the mechanical, deformation, and energy dissipation characteristics of the components, the system composition was studied, and the energy dissipation mechanism model of system was established.Based on the assumption that the energy recovery coefficient of collision is constant, the calculation method of residual kinetic energy of rockfall under protection was proposed.The in-situ impact test was carried out to study the rockfall movement characteristics with and without protection.Based on the rockfall energy characteristics, the rockfall energy attenuation rate and system influence factor were defined.The results show that under the intervention of the system, the number of collisions between rock and mountain increases by more than 2 times on average, the maximum bounce height of rockfall decreases by 82%.The energy attenuation rate of rockfall increases from 69.7% to 89.2%, the residual kinetic energy of rockfall decreases by 65%, and the system influence factor of energy attenuation is 0.35.The system can effectively suppress and guide rockfall movement, increasing energy dissipation.The calculation method of residual kinetic energy of rockfall proposed in this paper can be used to estimate the residual kinetic energy of rockfall under the protection condition.