Shear cell and test method suitable for rock joint shear-seepage coupling test

Abstract

The invention relates to a shear box applicable to rock joint shearing, seepage and coupling tests and a test method. By the aid of the test box, water can be sealed strictly during shearing, and stable seepage water streams can be formed among joints. The shearing box is mainly composed of a bottom plate, a side plate, a lateral water sealing bag and a water inlet and outlet device. The shear box is characterized by the design of the lateral sealing bag and the method of water injection at the front end and water accumulation at the rear end. By the aid of the rock joint shearing, seepage and coupling test box, the shearing displacement within 20mm can be achieved, the seepage characteristic variation caused by dilation and contraction during rock joint shearing can be studied fully, a water head of 0.05-3.0MPa can be provided to provide conditions for studying the influence of water pressure on joint seepage fully, a minitype servo water pump is used for injecting water, stable water streams can be formed at one ends of joints, the seepage situation conforms to natural conditions, and shearing and seepage tests of joint samples under the effect of complex loads can be finished through the shearing box.

Description

technical field [0001] The invention relates to a shear cell and a test method, in particular to a shear cell and a test method suitable for a rock joint shear-seepage coupling test. Background technique [0002] In recent years, with the construction of large-scale projects such as water conservancy and hydropower, nuclear waste storage, and petroleum mining, the geological environment in which engineering rock masses are located has become more and more complex. As a factor that has an important impact on the stability of rock mass engineering, groundwater has been paid more and more attention by researchers. The interaction between joints in rock mass and groundwater often directly determines the stability and safety of engineering structures. Therefore, in-depth study of the seepage characteristics of joints in rock mass is very important to solve the problem of rock mass stability in practical engineering. [0003] Since the 1970s, the hydraulic coupling characteristic...

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Problems solved by technology

[0006] The present invention mainly solves the technical problems that the lack of sealing means in the prior art and the inability to achieve a good water sealing effect etc.; provides a kind of water sealing boundary suitable for rock joints that can form a good water sealing boundary around the sample. Shear Cell and Test Method for Shear Seepage Coupling Test

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