Deduction of failure criterion for geomaterials based on maximum principal shear strain 巖土材料最大主剪應(yīng)變破壞準(zhǔn)則的推導(dǎo)
In the middle of tunnel , maximum principal stress at horizontal is bigger than that at vertical , the magnitude is 17 ~ 23mpa , which formed the high stress site 隧道中部大埋深地段,最大水平主應(yīng)力一般都大于垂直主應(yīng)力。量級(jí)在17 23mpa左右,屬于高應(yīng)力地段。