中文摘要：

根据大地下的大洞的特征，作为大洞稳定性， RandWPSO-LSSVM 优化反馈方法和大地下的大洞锚参数的流动过程的控制标准由使用包围岩石质量的安全因素指被建立。由把优化反馈方法用于实际工程，大巨浪柄的最好的锚参数 Nuozhadu 水力发出的电力车站的五隧道的区域地下大洞通过优化被获得。结果证明通过 RandWPSO 优化获得的 LSSVM 预言模型的预言的效果好、合理、可靠。参数获得了的最好的锚的联合是 114131312，也就是说，锁的锚酒吧间距是 1 m 灡吗？

英文摘要：

According to the characteristics of large underground caverns, by using the safety factor of surrounding rock mass point as the control standard of cavern stability, RandWPSO-LSSVM optimization feedback method and flow process of large underground cavern anchor parameters were established. By applying the optimization feedback method to actual project, the best anchor parameters of large surge shaft five-tunnel area underground cavern of the Nuozhadu hydropower station were obtained through optimization. The results show that the predicted effect of LSSVM prediction model obtained through RandWPSO optimization is good, reasonable and reliable. Combination of the best anchor parameters obtained is 114131312, that is, the locked anchor bar spacing is 1 m x 1 m, pre-stress is 100 kN, elevation 580.45-586.50 m section anchor bar diameter is 36.00 mm, length is 4.50 m, spacing is 1.5 m × 2.5 m; anchor bar diameter at the five-tunnel area side wall is 25.00 mm, length is 7.50 m, spacing is 1 m× 1.5 m, and the shotcrete thickness is 0.15 m. The feedback analyses show that the optimization feedback method of large underground cavern anchor parameters is reasonable and reliable, which has important guiding significance for ensuring the stability of large underground caverns and for saving project investment.