Manufacturing method of cemented soil and stone mixed sample

Abstract

The invention discloses a manufacturing method of a cemented soil and stone mixed sample. Firstly, the geological structure characteristics, the macroscopic mechanical properties and basic physical and mechanical parameters of a cemented soil and stone mixed body are acquired; then, according to the model similarity principle, a sample and the size of aggregate of the sample are determined, corresponding aggregate is prepared and evenly mixed according to proportion; finally, the prepared rock soil sample is placed in a pre-manufactured resin mold to be maintained and formed. Compared with the prior art, the manufacturing method has the advantages that the rock and soil mixed sample with the properties (including the cementing varieties, the geological shape and size of the aggregate, grain composition and the like) according with those of an original-shape sample can be obtained through the sample manufacturing steps, and manufacturing and forming can be performed according to the size of a needed standard sample suitable for the corresponding indoor experiment. The defect that properties of an existing indoor experimental sample do not conform with those of the original-shape sample is overcome, the discreteness of an experimental result is reduced, and sample manufacturing and experiments can be repeated.

Description

technical field [0001] The invention relates to the field of geotechnical engineering tests, in particular to a method for preparing a cemented soil-rock mixture sample. Background technique [0002] In nature, the cemented soil-rock mixture is widely distributed, and it is the most important geological body for the occurrence and breeding of geological disasters such as landslides and debris flows. These cemented soil-rock mixtures exist in complex hydrological and geological environments. After reaching the critical instability state, they will show obvious characteristics of accelerated rheological failure. The time of instability and failure is short, which is harmful, The characteristics of strong randomness and difficult governance have caused great losses to engineering construction. Therefore, the cemented soil-rock mixture is one of the unfavorable geological bodies that civil engineering construction focuses on. [0003] Soil-rock mixture is a geological material...

AI Technical Summary

Problems solved by technology

However, the size of the existing indoor test is small, which cannot guarantee the same properties as the original sample, so that the test results have great discreteness and randomness.

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