Solidification and permeation combined experimental device

Abstract

The invention relates to a solidification and permeation combined experimental device. The solidification and permeation combined experimental device comprises a base, a pressure chamber, a pressurizing assembly, a permeation assembly and a numerical value acquisition system, wherein the pressure chamber is fixed on the base; a pressurizing upper cover is arranged at the top of the pressure chamber in a sliding manner; the pressurizing assembly is connected with the pressurizing upper cover and can be used for applying pre-set pressure to the pressurizing upper cover; the permeation assembly comprises a water overflowing pipe, an adjusting pipe and a plurality of pressure detection pipes; a water overflowing hole is formed in the upper end of the pressure chamber; the water overflowing pipe is connected with the water overflowing hole; the adjusting pipe is connected with a water discharging hole; a plurality of pressure detection holes are formed in the pressure chamber along the vertical direction; the plurality of pressure detection pipes are connected with the plurality of pressure detection holes respectively; the numerical value acquisition system comprises a pressure transmitter, a displacement sensor and a control unit; and the control unit is connected with the pressure transmitter and the displacement sensor and is used for receiving pressure information and displacement information. The solidification and permeation combined experimental device can be used for performing a solidification and permeation combined test of coarse-particle soil under different solidification degrees, and a real stress state of large-particle oil with different burying depths is accurately simulated in a laboratory.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a combined consolidation and penetration experiment device. Background technique [0002] With the development of the national economy and the construction of the Maritime Silk Road in full swing, the traditional consolidation and penetration geotechnical test equipment is far from being able to provide effective technical parameters for coastal projects, island projects and water conservancy projects. The results of the conventional consolidation test can meet the general requirements, but the traditional consolidation tester cannot evaluate the permeability of the sample. Conventional permeability test is done under the condition of no axial loading, which is only applicable to surface soil samples. It is used to simulate deep soil (sand) samples for testing, and the measured permeability coefficient does not match the actual one. Under the action of stress, t...

AI Technical Summary

Problems solved by technology

[0005] A combination of consolidation and penetration experiments provided by this application solves or partially solves the large size effect and large error when the consolidation and penetration combined instrument in the prior art is used to test large-grained soils. The technical problem that it is impossible to accurately simulate the real stress state of large-grained soils at different depths enables not only conventional consolidation tests, conventional penetration tests, and fine-grained consolidation-permeability joint tests, but also coarse-grained soils with different degrees of consolidation. Soil consolidation and penetration joint test, the technical effect of accurately simulating the real stress state of large-grained soil with different buried depths in the laboratory

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