Horizontal foundation modulus is an important parameter in calculating the deformation of deep excavation project, evaluating the stability of the retaining structure.
水平基床系数是在计算深基坑的变形、支护结构的稳定性，以及桩在水平荷载下的位移、内力等方面有重要意义的参数。
The results show that: it is better that increase the length of soil nail at the central of foundation to limit the horizontal deformation than at the bottom and the top.
分析结果表明：增加基坑中部的土钉长度要比增加基坑底部和上部的土钉长度对限制基坑的横向变形效果要好。
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