基于RockFall与RA的危岩体二维和三维运动特征对比研究

COMPARATIVE STUDY ON 2D AND 3D MOTION CHARACTERISTICS OF DANGEROUS ROCK MASS BASED ON ROCKFALL AND RA

崩塌是常见的一类地质灾害,其运动轨迹和危险性量化评价是目前研究热点之一。研究以某山区高边坡为对象,分别采用RockFall二维落石轨迹仿真和RockFall Analyst三维落石仿真,对危岩失稳后崩塌落石运动特征进行模拟,并进行对比分析。结果表明:坡段上部属于落石高危险区,坡段下部属于低危险区,三维软件落石模拟结果比二维更加准确,对预测危岩落石轨迹和危岩防治工程具有重大意义。

Avalanche is a common class of geological hazards, and its movement trajectory and quantitative evaluation of hazard are one of the hot spots in current research. Taking a high slope in a mountainous area as an object, the study used RockFall 2D rockfall trajectory simulation and RockFall Analyst 3D rockfall simulation respectively to simulate the movement characteristics of avalanche rockfalls after the instability of hazardous rocks and to make comparative analyses. The results show that: the upper part of the slope section belongs to the high-risk area of rockfall, and the lower part of the slope section belongs to the low-risk area, and the results of the 3D software rockfall simulation are more accurate than 2D, which is of great significance to the prediction of the trajectory of rockfall and the control engineering of dangerous rocks.