Its range of application is wide, Suitable for building add layer, outer wall keep warm, flat to change slope, old room person who transform project roofing especially.

其应用范围广，特别适用于楼房加层、外墙保温、屋面平改坡、旧房改造等工程。

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Elastic wedge model is used for analysis of excavation of homogeneous slope. On the basis of elastic plane-strain theory and the line folds to add theory, stress field of the excavation is got.

本文采用了弹性理论中的楔形体理论，对均质边坡开挖过程进行了分析，在平面应变问题的基础上结合线性叠加原理得到开挖坡体的应力场。

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