边坡锚固防护结构参数的选取直接影响防治工程设计，进而影响到公路边坡的稳定性，科学合理地进行参数选取意义十分重大。提出了响应面试验设计法，并将其应用于锚固防护结构的参数选取上，研究了锚索支护参数对稳定系数的影响，建立了稳定系数与各影响因子的定量关系模型，给出了稳定系数的残差分布以及不同操作变量之间的稳定系数等值线图和响应面三维图，并对试验条件进行了优化，得出了各锚索支护参数的最佳取值方案。同时，将响应面法优化方案与极限平衡法稳定性计算结果进行了对比分析，对优化设计后边坡的稳定性进行了评价。结果表明，响应面优化设计方案合理可靠，从而为公路边坡锚索支护参数设计和优化提供了科学依据，为公路路堑边坡的稳定性研究提供了有用的方法。

Scientific and reasonable parameter selection for anchored protection structure of cutting slope is of great significance as it can directly affect the engineering design, and thereby affecting the stability of highway slope. A Response Surface Methodology (RSM) design is proposed and is applied to the parameter selection of anchoring protection structure. The impact of anchoring support parameters on slope stability factor is studied, and a quantitative relation model between the stability factor and influencing factors is established. The residual distribution of stability factor and the stability coefficient contour and response surface 3-D graph of different operation variables are also given. Meanwhile, the test conditions are optimized and the optimal value of each parameter is obtained. Moreover, the response surface optimization is compared with the computation result of limit equilibrium method, and the optimized slope stability is evaluated. It is concluded that the optimal response surface design is reasonable and reliable. As an applicable method for the study of cutting slope stability, it provides a scientific basis for the design and optimization of cutting slope anchored support parameters.