某隧道仰坡力学参数确定及稳定性分析

Mechanics parameters determination and stability analysis of a tunnel front slope

对某隧道进口仰坡进行分析,在RMR评价的基础上确定岩体的力学参数,利用赤平投影法对仰坡的稳定性进行定性分析,找出其最可能的破坏形式,然后对仰坡的稳定安全系数进行了计算,结果表明,该隧道仰坡安全储备不大,隧道施工扰动下,仰坡有失稳的可能。

Take a front slope of a tunnel as background, determine the mechanics parameters based on RMR. Use stereographic projection method to get a qualitative analysis of the slope, find out the most probable destructive form, then compute the safety factor. The result indi- cates that there is insufficient safety stock of the slope, under the influence of tunnel construction, it is possible to slide.