破碎岩体高边坡开挖稳定性的研究

通过成南公路 K73路堑高边坡(高度83.3m)现场施工实践,结合边坡开挖过程中岩体内部和关键部位应力场、位移场的变化情况,对边坡可能失稳的部位和危险程度进行划分,通过三维有限元计算分析,提出边坡开挖在不同高度、不同坡比的情况下,主应力和剪应力的变化情况,进而提出边坡合理的加固方案和对破碎岩体边坡坡面防护的措施,通过现场监测数据和工程实践表明,这种分析方法是正确的,处理措施是合理的,以供工程界参考。

Geometrical Moir Methodand Its Application

A geometrical moir method for displaying directly isochromatics and isoclinics of a diametrically pressed circular disk is presented. It is demonstrated that by using two identical or different Wulff nets (or grids) not only the stress fields of a circular disk can be displayed, but the u -and v -displacement fields can also be produced.