Analysis of Geotechnical Engineering Investigation in a Site in Guizhou Province
[Purposes]In order to find out the basic geological conditions,hydrogeological characteristics,structural and seismic conditions in the proposed construction site,find out the adverse geological condi-tions in and around the proposed site and put forward treatment suggestions,determine the geotechnical physical characteristics in the proposed site,and select the appropriate bearing layer for the engineering construction.[Methods]Through drilling engineering,taking rock and soil samples and water samples for testing,the stability of the site and the corrosion of groundwater are analyzed,and the physical and me-chanical parameters of rock and soil are obtained.[Findings]The drilling shows that the inner layer of the site can be divided into three layers from top to bottom:quaternary residual slope layer,heavily-weathered mudstone layer and moderately-weathered mudstone layer.The test results of water samples show that the corrosion of water inside the site is weak.The rock sample test results show that the bear-ing capacity characteristic value of moderately-weathered mudstone is 2 408.4 KPa,and the bearing ca-pacity is good.[Conclusions]Through this work,it is found that the overall stability of the proposed site is good,and the project construction will be carried out.The groundwater level is below the lowest eleva-tion of the construction,the anti-floating design may not be considered;it is suggested to select moderately-weathered mudstone as the bearing layer.
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