玉楚高速公路红层软岩顺层边坡研究

Study on the slope of layer soft rock in Yuchu expressway

玉楚高速公路SJ-3标段K113+122~K113+270右侧路堑边坡作为典型工点进行分析研究。进行了边坡在不同降雨强度下的位移和应力变化情况研究发现:随着降雨量的增大,软岩的强度降低,接触面的抗滑性能减弱,使得水平位移不断增大;部岩体水平应力逐渐变大,而且沿软弱滑带附近局部产生拉应力,最终导致边坡岩体产生拉裂破坏。

This paper analyzes and studies the right side slope of K113+122~K113+270 on the SJ-3 section of Yuchu Expressway as a typical work point.The displacement and stress changes of the slope under different rainfall intensities have been studied.It is found that with the increase of rainfall,the strength of soft rock is reduced,the anti-sliding performance of the contact surface is weakened,and the horizontal displacement is increasing.The horizontal stress gradually becomes larger,and the tensile stress is locally generated along the weak slip zone,which eventually leads to the tensile failure of the slope rock mass.