鄂东南花岗地区重力侵蚀及崩岗形成规律的研究

A Study on Gravitational Crosion and the Formation of Collapse Mound in the Granite Area of Southeast Hubei

本文采用野外调查和岩土物理性质的分析方法,研究了鄂东南花岗岩地区重力侵蚀和崩岗形成规律.结果表明,该区重力侵蚀较严重,主要表现为小型滑坡和崩塌.崩岗形成经历了陡坡的形成——龛的形成——崩岗形成三个过程。重力侵蚀和崩岗形成多在每年3～6月发生在海拨100～200m,相对高差30m以内的低缓丘陵地带.

Base on field investigation and measuring physical properties of rock,this paper discussed the gravitational erosion and the formating law of collapse mound. The result showed that the gravitational erosion was seriously happened in granite area of Southeast Hubci,among which the landslides and collapses were main patterns. The formation of collapse mound can be divided into three succesive stages steep slope,niche and collapse mound,and those processes moin-lytook place from March to June at the low and smooth hilly areas where the elevations was 100-200 m and the relative height was som.