Three-axis device suitable for testing mechanical property of soil body under permeation effect of water circulation and use method of three-axis device

Abstract

The invention discloses a three-axis device suitable for testing the mechanical property of a soil body under the permeation effect of water circulation and a use method of the three-axis device. Thedevice comprises a three-axis pressure chamber, an upper cross beam, a gradienter, a base, a bottom controller and a threaded supporting rod; the gradienter is arranged on the upper cross beam; the upper cross beam is fixedly connected with the bottom controller through the threaded supporting rod; the threaded supporting rod can be adjusted, so that the balance and contact of the upper cross beamcan be controlled according to the gradienter; the base is arranged on the bottom controller; the bottom controller can control the base to ascend and descend; the three-axis pressure chamber comprises a test system and a water circulation system for a soil sample; the three-axis pressure chamber is integrally airtight. With the device adopted, water circulation can be carried out on a soil sample to be measured; and then the mechanical property of the soil sample which has been subjected to water circulation is measured. The device has the advantages of simple structure, convenient operationand real and reliable test result.

Description

Technical field [0001] The invention belongs to the field of soil property testing devices for geotechnical engineering, and particularly relates to an improved triaxial device suitable for testing the mechanical properties of soil under the action of water circulation and seepage. Background technique [0002] Sea sand is hit by waves and retreats, causing particles in the soil to migrate, resulting in changes in the internal structure of the soil, thereby affecting the mechanical properties of the soil. And such erosion will cause some geological disasters, such as landslides and sinkholes. Therefore, for offshore structures, it is particularly important to study soil erosion under the action of water circulation infiltration. [0003] The triaxial device is currently the mainstream device for measuring the shear properties of various soil mechanics in the geotechnical engineering community. However, the existing three-axis device is not suitable for simulating the action of wa...

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Problems solved by technology

However, the existing triaxial device is not suitable for simulating the water cycle, and cannot integrate the soil sample under the water cycle infiltration and the measurement of the mechanical properties of the soil sample.

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