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本文对土钉支护这种新的挡土技术提出了极限平衡的设计方法，并给出寻找临界滑动面及相应安全系数的算法；分析了支护参数和土层分布对安全系数的影响；设计计算结果与国外几种方法进行了比较，给出了安全系数的建议值。
In this paper, the limit equilibrium design method for the new soil retaining technology of soil nailing is proposed, and the algorithm for finding the critical slip surface and the corresponding safety factor is given. The influence of supporting parameters and soil distribution on the safety factor is analyzed. The calculation results of the design are compared with several foreign methods, and the recommended values of the safety factor are given.