Rock joint shear-seepage coupling experiment box

Abstract

This invention relates to a rock cleavage shearing - seepage coupling test box, the characteristic lay in: box shell includes upper box and lower box, both fitting surface are flat. Inter of upper box and lower box have similar size flute, and two flute together form cavity that can hold rock test piece; Near upper end of left and right wall sheet of lower box have set up water entry and water exit; box shell executed by metal or alloy that has high compressive strength, good water erosion bearing quality. This invention can carry out rock cleavage shearing - seepage coupling test under high infiltration water pressure. because of the designing of sealing device, in the test process water current leakage will not occur when up and down cleavage test piece in conjunction with upper and lower box occurring relative shearing displacement, and still flowing according to predesigned path and mode, so strained condition more fit for nature, data more sincerity, conclusion can serve practical engineering better.

Description

technical field [0001] The invention relates to a test box which can be used for rock joint shear-flow coupling test. Background technique [0002] When the rock mass in nature is subjected to external force, structural surfaces such as joints and fissures will be produced. When the intact rock in a certain area is broken by external force, a pair of joint surfaces will be formed. There are usually two problems in the shear-seepage coupling test of rock joints at home and abroad: too small seepage water pressure and radial water flow. The seepage water pressure value is too small, the water head height is only more than 2m, and the maximum water head height in the actual project even exceeds 1000m; the seepage mode of the radial flow, that is, the water injection from the center of the joint surface to the surrounding flow, which is also inconsistent with the actual situation Yes, the natural water flow in joints should be one-sided flow, that is, flow from one end of the j...

AI Technical Summary

Problems solved by technology

The shear-seepage coupling test of rock joints at home and abroad usually has two problems: the seepage water pressure value is too small and the radial water flow pattern

[0003] At present, there are relatively mature rock joint shear testing machines at home and abroad. However, due to the existence of the above problems, the development of testing machines that can perform shear-seepage coupling tests on rock joints is slow. Control the loading device, sealed shear cell, opening degree measurement and flow measurement device, and form an integrated rock joint shear-seepage coupling test system, so as to realize rock under steady-state hydraulic pressure or transient hydraulic pressure seepage joint shear test

In the above work, the biggest technical problem is the design and production of the cutting box

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