基于丹寨县南皋二小危岩体的崩塌落石运动分析

Analysis of Collapse and Rockfall Movement Based on Nangao No. 2 Danger Rock Mass in Danzhai County

丹寨县南皋二小危岩体破坏类型为倾倒式,运动形式为倾倒、坠落。根据南皋二小危岩体的实际情况,选择折线形公式进行落石运动速度计算,通过分析计算,危岩体发生崩塌坠落后,危岩崩塌体最大滚距达100m,但因崩塌物的相互碰撞,崩塌物一般滚距70~80m。也为其他崩塌区危岩体的崩塌落石运动分析提供一定的依据。

The damage type of Nangao No.2 dangerous rock mass in Danzhai County is dumping type.The movement form is dumping and falling.According to the actual situation of the Nangao No.2 dangerous rock,the polygonal line formula was selected to calculate the rockfall velocity.After analysis and calculation,after the collapse of the dangerous rock body,the maximum rolling distance of the dangerous rock collapsed body was 100m,but due to mutual collapse collision,the general collapse distance is 70~80m.It also provides a basis for the analysis of the rockfall motion of the dangerous rock mass in other collapse areas.