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Simple shear test remolding soil sample preparation device and preparation method thereof

A technology for sample preparation and sandy soil, which is applied to a single shear test reshaping sandy soil sample preparation device and its preparation field, can solve problems such as soil saturation not meeting requirements, pressure chamber saturation, and test results deviating from reality, etc. Achieve high repeatability and good uniformity

Inactive Publication Date: 2018-12-21
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional simple shear equipment at home and abroad still needs to be improved in the above aspects, especially the saturation inside the pressure chamber, which leads to the soil saturation not meeting the requirements, and the test results are far from the actual

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  • Simple shear test remolding soil sample preparation device and preparation method thereof
  • Simple shear test remolding soil sample preparation device and preparation method thereof
  • Simple shear test remolding soil sample preparation device and preparation method thereof

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Embodiment Construction

[0033] The embodiment of the present application provides a single-shear test remolded sand sample preparation device and its preparation method, which solves the problem of poor uniformity and low repeatability of conventional single-shear test remolded samples, and the sample cannot be carried out in a pressure chamber. Saturated technical issues provide a basis for the study of static and dynamic properties of soil based on simple shear tests.

[0034] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0035] The device for preparing the sandy soil sample for the simple shear test of the embodiment of the present application includes: a first base, a rubber film, a split mold, a top cap, a first water channel, a vertical loading rod and a second water channel;

[0036] Bind a rubber film on the outer surface of the first base, install a split mold on the outside of the...

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Abstract

The invention provides a simple shear test remolding soil sample preparation device and a preparation method thereof. The method comprises the following steps: measuring a physical parameter of the soil sample, and computing the sand sample quality; performing sample loading by adopting vacuum pumping method and a wet-loading method, and controlling the uniformity and the compactness of the sample; dismounting a split-die by matching a detachable cored screw at the upper part of a top cap, and mounting a simple shear ring; and performing saturation on the sample by adopting the vacuum pumpingmethod, the carbon dioxide and hydraulic saturation. The sample prepared through the preparation device provided by the invention is good in uniformity and high in repeatability; the saturation can beperformed on the sample in a pressure room, the technical problem that the sample cannot be saturated in the pressure room since the conventional simple shear teat remolding sample is bad in uniformity and low in repeatability is solved, thereby providing foundation for developing the soil body static and dynamic characteristic study based on the simple shear test.

Description

technical field [0001] The invention belongs to the technical field of soil static dynamics testing, and in particular relates to a device for preparing a remolded sand sample for a single shear test and a preparation method thereof. Background technique [0002] The simple shear test is the main method for testing the static and dynamic properties of soil, and the test for the static and dynamic properties of saturated remolded granular soil is a prerequisite for carrying out basic theoretical research on saturated soil. Therefore, it is required that the prepared remolded sample should have high uniformity and repeatability, and the degree of saturation should also meet the requirements. However, the conventional simple shear equipment at home and abroad still needs to be improved in the above aspects, especially the inability to perform saturation inside the pressure chamber, resulting in soil saturation that does not meet the requirements, and the test results are far fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 邓海峰刘振纹祁磊许浩
Owner BC P INC CHINA NAT PETROLEUM CORP
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