A Lifting and Undisturbed Soil Triaxial Sample Preparation Technology

Abstract

The invention discloses a lifting type sample preparation technology for a tri-axial sample of undisturbed soil. The technology comprises the steps as follows: firstly, according to characteristics ofa soil sample, the hardness of the soil sample is judged, and the cutting rotation speed of a cutting mechanism is determined; then the soil sample is placed on a lifting mechanism and can be drivenby the lifting mechanism to rise, the soil sample rising gradually is cut through rotation of a cutting blade of the cutting mechanism, and preliminary preparation of the tri-axial sample is completed; and finally, the height of the lifting mechanism is reduced, the sample is taken out and is treated according to the required height, and the sample preparation is completed. According to the technology, the problems that operation steps are tedious, the influence caused by the operation proficiency of sample preparation persons is large, the sample preparation efficiency is low, the disturbanceto the soil sample is large, the success rate of sample preparation is not high and the like in existing sample preparation processes are solved.

Description

technical field [0001] The application relates to a lifting type undisturbed soil triaxial sample preparation process, which belongs to the technical field of indoor geotechnical testing in the discipline of civil engineering. Background technique [0002] At present, with the continuous development of the construction industry, it is necessary to determine the mechanical properties of the undisturbed soil at the beginning of the project. Triaxial mechanical tests are usually used to provide information for the design of building structures. When the undisturbed soil is tested for triaxial mechanical tests, the cylindrical soil body with a diameter of 150 mm and a height of 200 mm should be made into a standard sample. The standard sample is usually a cylinder with a diameter of 39.1 mm and a height of 80 mm; To disturb the sample, appropriate sample preparation equipment, commonly called a soil cutter or sampler, must be used. At present, although the sample preparation de...

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Problems solved by technology

[0005] The invention provides a lift-type undisturbed soil triaxial sample preparation process to solve the problems of cumbersome operation steps in the existing sample preparation process, greatly affected by the operating proficiency of the sample preparation personnel, low sample preparation efficiency, and the impact on the soil during the sample preparation process. Large sample disturbance, low success rate of sample preparation, etc.

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