Study Of The Anti-slide Pile Optimization Based On Deep Landslide With Multiple Slide Surfaces

Landslide is a common type of slope failures, its characterized by wide distribution andharm is serious, in our country the economic losses caused by the landslide hazards everyyear is very serious Therefore, landslide hazards are attached great importance to by the state,and landslide hazards to carry out the relevant research and positive treatment.One of the main measures of landslide treatment project is anti-slide pile project,because of the anti-slide pile project has the prominent characteristics of treatment effect, itwas widely adopted in the landslide treatment project. But the anti-slide pile on the selectionof design parameters is random, therefore, to meet the safe and reliable in the anti-slide pileproject is more difficult. If your design is too conservative, would cause the waste ofinvestment, and there is a big project hidden danger conversely. Therefore, to carry out theanti-slide pile treatment plan optimization study has great significance on anti-slide pileproject application.This paper is mainly about the optimization study on control scheme and its parameters,take Lanzhou-chengdu crude oil pipeline engineering BF123-BF125landslide as an example,analysis of the characteristics and formation mechanism of the landslide, analysis its stabilityand evaluation it, then put forward several anti-slide pile management plans, to carry outanti-slide pile treatment scheme optimization research. The optimization research mainlydivided into two steps, the first step is to carry out anti-slide pile treatment schemeoptimization research, identify the most economical, safe and feasible anti-slide piletreatment plan, the second step is to carry out the mainly parameter optimization research, inorder to achieve the scheme is feasible and convenient for construction and saves the projectinvestment.For the optimization method proposed in this paper:(1) In the study of anti-slide pilespacing optimization research, according to the mechanism of the interaction of anti-slide pileand landslide, build the model based on the interaction between pile and landslide, analysis ofthis model, to set up the minimum pile spacing model based on soil arching effect betweenpiles, and the maximum pile spacing model based on soil arching effect after the pile, underthe precondition of the safety, analysis and calculation of the reasonable minimum pile spacing and the maximum pile spacing, determine a reasonable range of piles spacing.(2) Inthe aspects of anti-slide pile structure parameters optimization research, under the premise ofthe stability requirement, and under the premise of bending, shear, lateral stress and tectonicrequirements, according to the golden section method, using the optimization calculationmodel to solve the section size. minimizing the costs of anti-slide pile is solving the optimalgoal.(3) finally, composite the optimization results of pile spacing and section size, todetermine the pile spacing and section size, achieve the optimization goal of anti-slide piletreatment scheme.