Classification Of The Reservoir Stockyard Soil In Xiajiang Hydro Project And Probe About The Regular Pattern Of Experimental Data

The research of stockyard soil has been a long-standing problem in HydraulicEngineering, but previous studies basically confined to the study of the soil drydensity, moisture content, liquid and plastic limits, particle size distribution, hydraulicconductivity and other parameters of the same kind of soil, but in actual engineering,the soil is changing, simply exploration against the same soil is not much meaningful.Based on experimental parameters of different stockyard soil for24tenders and testdata for degree of compaction of dike, this article conducts a mathematical statisticsand regression analysis, probe the relationship between compaction, particledistribution, specific gravity, liquid and plastic limits and penetration of stockyardsoil and then make a conclusion. In the busy construction season, we can probablyestimate some time-consuming test parameters through these regular pattern to reducethe impact of testing on construction schedule. This is of great significance to guideconstruction.The content of this paper and related work:Introduces domestic soil classification system, summarizes some specificmethods of soil classification, such as domestic triangle principles of classification,plastic figure classification, American EPC classification. Combined with theactual project, classify the stockyard soil by methods plastic figure classification andEPC classification. After comparing the classification results, it can be indicated thatthe EPC classification method has better applicability for engineering.Analysis and demonstrate the linear relationship and correlation about five testparameters of stockyard soil through mathematical software like Origin，MATLABand so on. It is pointed that the liguid limit has the largest impact on the maxium drydesity through forecasts and sensitivity analysis by genetic algorithms neural networksystem. Introduce a four-parameter full compaction curve equation and determine thelinear relationship between four parameters Sm,Wm,p,n and parameters like liquidlimit of the converntional experiment. After that,four parameters curve equation hasbeen determined and superiority of this equation. This article analyses the compaction characteristics of reservior engineeringstockyard soil in SanXia hydro project, determine the relationship among the degreeof compaction, resilient modulus, moisture content and dry density throughlaboratory test, analyses the relationship between grinding time and the degree ofcompaction through site expriment and researches effect the rainfall have oncompaction of the surface soil on the dike. It also calculates slope stabilities aboutthe combination of9different compaction and discusses the effect the dgree ofcompaction about dikes have on slope stability.