Abstract:

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.

Key words: landslides, supporting scheme, chaos theory, optimization, structure design, slope protection