Device and method for environmentally researching shearing property of structural surface test samples

Abstract

The invention discloses a device for environmentally researching shearing property of structural surface test samples. The device comprises a steering unit, a support frame, a connecting mechanism and a packaging mechanism, wherein a flat panel is fixedly connected to the upper part of the steering unit; a plurality of strip-shaped grooves are formed in the flat panel and are centrally and symmetrically distributed along the center of the flat panel; the quantity of the strip-shaped grooves is matched with that of the structural surface test samples in a shearing direction; strip-shaped bulges corresponding to the strip-shaped grooves are formed in the lower side of the support frame; the flat panel and the support frame are fixed together by clamping the strip-shaped grooves and the strip-shaped bulges; an inner part of the support frame is connected with the connecting mechanism; the packaging mechanism is fixed in the connecting mechanism; the packaging mechanism is wrapped with the structural surface test samples, and the packaging mechanism comprises a plurality of strip-shaped steel plates; the quantity of the strip-shaped steel plates is determined according to the sizes of the structural surface test samples; by adjusting the quantity of the strip-shaped steel plates, the packaging of the structural surface test samples of different sizes can be realized. According to the device disclosed by the invention, researches on the anisotropy and the size effect of the structural surface test samples can be environmentally and quickly conducted.

Description

Technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to an environmental protection device and method for studying the shear characteristics of structural surface samples. Background technique [0002] Rock mass structural surface sample refers to the geological interface or zone with a certain extension direction and length and relatively small thickness formed in the rock mass during the development of geological history, including bedding, joint surface, unconformity surface, etc. Due to the existence of structural surface samples, the continuity and integrity of the rock mass are greatly destroyed, and the mechanical properties and stability of the engineering rock mass are weakened. Therefore, it is of great significance to study the related properties of rock mass structural surface samples. [0003] The shear strength parameters of rock mass structural surface samples are important indicators for engineering rock mas...

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Problems solved by technology

[0003] The shear strength parameters of rock structural surface samples are important indicators for the stability analysis of engineering rock mass and the design of reinforcement treatment schemes. Generally, the shear strength indicators of structural surface samples are obtained through tests. The direct shear instrument is a commonly used instrument. Due to its convenience and ease of operation, it can be used in field and indoor tests. At the same time, it can meet certain accuracy requirements and is low in cost. It is still the direct shear test among the existing test instruments. However, the normal stress cannot be servo-controlled by using this direct shear instrument, and the test can only be carried out by using the auxiliary method of wrapping the rock mass structural surface sample sample with concrete, and it is not possible to accurately and easily test each of the rock mass structural surface samples. Anisotropy for research

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