垂直裂隙对根-土复合体黄土边坡的稳定性研究

为研究垂直裂隙对根-土复合体黄土边坡稳定性的影响,采用OPTUM G2有限元软件模拟垂直裂隙在干燥和充满水的工况下素土及根-土复合体黄土边坡稳定性。计算结果表明,相对根-土复合体黄土边坡,垂直裂隙充满水的素土边坡坡顶拉裂缝将增大,垂直裂隙宽度相继增大;随着垂直裂隙深度的增加,素土及根-土复合体黄土边坡安全系数均减小;当垂直裂隙充满水且裂隙深度扩展到1.5 m时,素土边坡安全系数下降21.54%左右,根-土复合体黄土边坡安全系数下降8.0%左右。上述研究结果可为生态护坡和水土保持研究提供一定数据参考。

In order to study the influence of vertical fissures on the stability of root-soil composite slope,OPTUM G2 finite element software was used to simulate the stability of plain soil and root-soil composite loess slope under dry and saturated conditions.The calculation results show that compared with the root-soil composite loess slope,the tensile cracks at the top of the plain soil slope with vertical fissures filled with water will increase,and the width of vertical fissures will increase,and the safety factors of plain soil and root-soil composite loess slopes will decrease with the increase of vertical fissure depth.When the vertical fissure is full of water and the crack depth extends to 1.5 m,the safety factor of plain soil slope decreases by 21.54%,and the safety factor of root-soil composite loess slope decreases by about 8.0%.The above research results can provide some data reference for the study of ecological slope protection and soil and water conservation.