This invention concerns itself with the provision of a calculation method of one-dimensional settlement of soil oil caused by ground water level drop. – The invention provides a one-dimensional settlement calculation method for unsaturated soil layers caused by groundwater level drop.
– The method considers the elastic-plastic deformation of unsaturated soil caused by changes in matrix suction caused by groundwater level drop.
– The method takes unsaturated soil samples from different soil layers and performs a triaxial shrinkage experiment.
– A relationship curve is obtained between the volume strain of the unsaturated soil sample and the matrix suction. The invention can consider elastic-plastic deformation caused by matrix suction in unsaturated soil.
All the parameters in the invention can be obtained through conventional indoor tests. The settlement calculation method of unsaturated soil caused by groundwater level drop can consider the characteristics of elastic-plastic deformation of unsaturated soil caused by matrix suction change.
The calculation method can accurately reflect the actual deformation of the unsaturated soil layer. Overall, the invention has many advantages and technical effects.
