Wetting-drying-cycle mudstone slaking test equipment capable of providing true stress conditions

Abstract

The invention provides wetting-drying-cycle mudstone slaking test equipment capable of providing true stress conditions. The equipment comprises a test platform, a test box and a test box outer cover,wherein the test box outer cover is embedded into the test platform; the test box is arranged in the test box outer cover and spliced by six pressing plates; each pressing plate is vertically connected with one end of a pressing rod, and the other end of each pressing rod is connected with a hydraulic cylinder; the pressing rods connected with the surfaces except the bottom surface of the test box penetrate the surfaces of the test box outer cover; pressure sensors and displacement sensors are mounted on the pressing rods; a CT (computed tomography) instrument is mounted above the test box outer cover; the test equipment comprises a water injection pipeline and a computer, one end of the water injection pipeline is connected to the test box outer cover, the other end is connected with a water pump, the computer is connected with the water pump, all the hydraulic cylinders, pressure sensors and displacement sensors and the CT instrument. The test equipment has beneficial effects as follows: wetting-drying-cycle slaking test and triaxial test under the true stress conditions can be performed, and mechanical effects of reservoir bank mudstone under the wetting-drying-cycle conditionare disclosed.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a mudstone dry-wet cycle disintegration test equipment providing real stress conditions. Background technique [0002] Under the conditions of dry-wet cycles, mudstone usually exhibits obvious characteristics such as water disintegration, dissolution, mudification, dehydration and dry cracking, which easily cause corresponding engineering problems, thus attracting widespread attention. Mudstone dry-wet cycle disintegration test research has been relatively common. Many scholars at home and abroad have carried out relevant research, not only revealing the disintegration mechanism of mudstone from the macro and micro levels, but also proposing a series of quantitative indicators to quantitatively characterize the disintegration mechanism of mudstone and its Degree of Disintegration, Service Engineering Practice. At present, the operating methods of this type of te...

AI Technical Summary

Problems solved by technology

Obviously, the existing unconfined dry-wet cycle disintegration test method has been difficult to meet the real mechanical conditions of the reservoir bank mudstone

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