山区边坡巨型滚石失稳模拟及防治对策分析

The simulation of instability and disaster prevention for the heavy rockfall in mountainous areas

依托某典型滚石灾害工点,对坡顶巨型孤石开展现场调查评估,得知孤石暂时稳定,但具备启动发展成滚石的可能;通过失稳后运动轨迹的分析及冲击能量的计算,可知滚石启动后运动轨迹接近坡表,冲击能量巨大,破坏性强。针对孤石具备启动发展成滚石的现状,可采取加固和支撑方法,并结合人工分解方案以降低潜在滚石的威胁。

Base on the site of a typical rockfall disaster, the investigation and evaluation for the huge single rock at the top of the slope were carried out and it was found that the rock was temporarily stable, but had the possibility of starting and developing into a rolling stone. Based on the analysis of the trajectory and the calculation of the impact energy after the instability of the rockfall, it can be sen that the trajectory is close to the slope table after the rockfall occurred and the impact energy is huge and destructive. In view of the present condition of the rockfall,reinforcement and support methods can be adopted, and the artificial decomposition scheme can be combined to reduce the potential threat of rockfalls.