Optimization design model of fill slope in construction site based on expected investment

Optimization design of fill slope is an important issue for the fill slope safety and risk assessment in construction site.Firstly,According to the characteristics of construction site engineering,this paper proposes a fill slope optimization design model based on the minimum expected cost as the objective function,and constructs the main design variables and constraints of this optimization design model.Secondly,this paper summarizes that during the previous survey process the design must contact with the construction plan,and must consider the random distribution of the design parameters and the applicability of the design.Finally,the optimization model is applied to a fill slope design of construction site engineering located in Ertang manganese mine,Pingle County,Guangxi.For the instance,the optimal fill slope angle of the different heights and the minimum expected unit cost are proposed.And,there is a positive linear correlation between the project cost and design slope height,while the optimal slope angle and the design slope height appear in a negative correlation for the fill slope in the Ertang manganese mine.The research provides a practical model for the optimization design of fill slope in construction site engineering,and has value for improving the risk assessment theory of fill slope.