The controlling design of landslides is a complex nonlinear problem, as many factors affect the design process and they influence each other. There is more or less a waste of traditional landslide supporting scheme, it is necessary to optimize the design of different supporting schemes. Based on the annealing improved mutative scale chaos optimization algorithm, a supporting scheme for Ermi landslide is suggested through computer programming technology. Five factors such as anchor channel number, anchor horizontal spacing, anchors numbers, anchor anchoring angle and anchor anchoring drilling diameter are regarded as the optimizing design variables. The engineering cost and safety of slope are the goal of optimization scheme. The calculation result shows that the cost of optimal supporting scheme will reduce 33. 17% than the design based on specifications, and safety factor of landslide rises about 3. 31%. The chaos optimization design scheme is much more scientific, reasonable, economy and safe.%滑坡治理是一个复杂的非线性问题,影响因素众多,各个因素之间相互制约.传统滑坡支护治理方案存在不同程度的浪费,有必要进行方案细部结构的优化设计.基于退火策略变尺度混沌优化算法,对二密滑坡锚固支护方案的锚索结构进行细部优化设计.针对锚固方案,选取锚索布设道数、锚索水平间距、锚索钢绞线根数、锚索锚固角、锚固孔径5个因素作为优化设计变量,以工程造价作为优化目标,同时保证滑坡稳定安全,进行方案优化分析.经过优化后的设计方案造价比规范法设计方案的造价减少33.17％,并且采用优化的支护方案锚固后的滑坡体稳定系数提高,潜在滑动面稳定系数提高3.31％.经过比较分析,混沌优化设计方案更加科学、合理、经济、安全.
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