Rock seepage-stress coupling shear rheological test box

A rheological test, test box technology, applied in permeability/surface area analysis, measurement device, suspension and porous material analysis, etc., can solve the problem that the shear surface seepage characteristic device has not been reported yet

Active Publication Date: 2016-06-29
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Rock seepage-stress coupling shear rheological test box
  • Rock seepage-stress coupling shear rheological test box
  • Rock seepage-stress coupling shear rheological test box

Examples

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Embodiment

[0019] Example: such as Figure 1~5 As shown, a rock seepage-stress coupled shear rheology test box includes an upper test box 1 and a lower test box 2 placed in a cylindrical sealing sleeve 12, and an inclined plane is used as a contact between the upper and lower test boxes. The surface is combined to form a cylinder, and the contact surface is the shear surface with a certain shear angle α. There are hollow parts inside the upper and lower test boxes, and the hollow parts are covered with high-performance rubber sleeves 4 and 6. The hollow cylindrical tube formed by the combination of the upper and lower test boxes is used for placing the rock sample 8 in it. The rock sample 8 is just cut. section. The upper and lower test boxes 2 are respectively provided with seepage holes 5 and 7 leading from the upper and lower surfaces to the shear plane, and the two seepage holes 5 and 7 are symmetrical along the center of the shear plane. The water seepage holes 5 and 7 are provide...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 刘琳徐卫亚王环玲王如宾王伟
Owner HOHAI UNIV
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