Rock seepage-stress coupling shear rheological test box

Abstract

The invention discloses a rock seepage-stress coupling shear rheological test box. The rock seepage-stress coupling shear rheological test box comprises an upper test box body and a lower test box body, wherein a slope serves as a contact face. The upper test box body and the lower test box body are arranged in a sealed sleeve, and a rock sample penetrates through the contact face to be fixedly clamped in a hollow cylindrical barrel formed between the upper test box body and the lower test box body; the upper test box body and the lower test box body are each provided with a water seepage hole led to the contact face from the upper surface and the lower surface, and a strainmeter is installed at the bottom of the lower test box body. Axial pressure is applied to the upper test box body and transmitted to the lower test box body, the contact face, namely, the slope serves as a shear face, the water seepage holes can apply seepage pressure to the shear face to achieve the seepage-stress coupling effect, the seepage-stress coupling shear flow variable is converted by measuring horizontal deformation of the lower test box body and the shear angle of the contact face, and reference value is achieved for quantitatively researching the shear rheological property of rock under the seepage-stress coupling condition.

Description

technical field [0001] The invention relates to the field of rock mechanics and engineering, in particular to a rock seepage-stress coupled shear rheology test box. Background technique [0002] The study of rock permeability characteristics is an important research topic in rock mechanics at present, and has very important engineering background and significance. However, due to the existence of certain groundwater, it usually involves the interaction between water and rock, mainly because seepage water pressure affects the stress distribution of surrounding rocks, changing the stress field of rocks, and the redistribution of stress leads to changes in rock permeability characteristics. This leads to changes in the seepage field. For example, the excavation of dam foundations, tunnels or caves, oil and gas exploitation, etc., groundwater is an important factor affecting the stability of rock engineering. [0003] The shear test under the condition of rock seepage-stress c...

AI Technical Summary

Problems solved by technology

At present, most of the rock shear rheological tests adopt the form of horizontal loading to study the horizontal shear surface. There is no shear rheological test device with different angles under vertical loading, and at the same time, it is aimed at the seepage of the shear surface at different angles. Characteristic devices have not yet been reported

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