Indoor simulation test method for seepage and settlement deformation of fill foundation

Abstract

The invention discloses an indoor simulation test method for seepage and settlement deformation of a fill foundation. The method comprises the following steps: 1, constructing an indoor simulation test device; 2, preparing a wet soil sample; 3, manufacturing all single-layer soil column samples except the single-layer soil column sample on the topmost layer; 4, manufacturing a single-layer soil column sample on the topmost layer; 5, performing a water immersion simulation test; 6, carrying out a multi-stage loading test. According to the invention, the seepage and settlement deformation rulesof the fill foundation under multiple working conditions can be simulated; the defects of single working condition, high cost, long period and the like of an on-site entity engineering monitoring testare overcome; the test result is stable and reliable, the test basis is provided for the fill foundation immersion test research, the technical blank of the fill foundation seepage and settlement deformation indoor simulation test is filled, and the method has important significance for improving the theoretical research level of the fill foundation seepage and settlement deformation.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering detection and testing, and in particular relates to an indoor simulation test method for fill foundation seepage and settlement deformation. Background technique [0002] The filling foundation is an artificial foundation formed by layering and compacting general fine-grained soil or coarse-grained soil to the target compaction degree (dry density) by various compaction methods. At present, two methods are mainly used to study the seepage problem of the fill foundation: one is to measure the permeability coefficient based on the indoor small-scale soil column seepage test and the soil-water characteristic curve, and use the seepage theory and numerical simulation method to analyze the saturation and unsaturation of the foundation However, due to the artificial disturbance and representativeness of small soil columns, the measured seepage parameters cannot accurately reflect the en...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an indoor simulation test method for fill foundation seepage and settlement deformation in view of the above-mentioned deficiencies in the prior art, which can simulate the law of seepage and settlement deformation of fill foundation under multiple working conditions, It overcomes the disadvantages of on-site physical engineering monitoring and testing, such as single working conditions, high cost, and long period, and the test results are stable and reliable. It provides a test basis for the research of fill foundation water immersion tests, and fills the gap in the technology of indoor simulation tests of fill foundation seepage and settlement deformation. It is of great significance to improve the level of theoretical research on fill foundation seepage and settlement deformation

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