Curved rock sample permeability test device

Abstract

The bent rock infiltration testing equipment comprises MTS815 or 816 serial rock dynamic experiment system, cylinder, pistons sequentially set inside the cylinder, multi porous water through plate and round ring post, bottom of the cylinder having bottom plates connected with the bolts with conical press head, whose top with ring post has rock sample space and seal glue between them, bottom plate and middle of the press head having through water channel, water intake joint under the bottom plate, water through holes connected with the exhaust water pipe on the piston, rock sample inside the cylinder receiving thrust and propping force, with the sample rock bending in filtration having dramatic change to simulate the water bursting feature and verifying the bursting of water accompanied with the structural damage of the filtration unstable process. It is simple in structure, low in experiment cost, quick in seal, reliable in performance, and extensive in application.

Description

technical field [0001] The invention relates to a curved rock sample penetration test device, especially suitable for rock mechanical property tests Background technique [0002] In order to simulate the real mechanical properties of the rock, the MTS815 or 816 series rock mechanics test system is used to support the test device for the permeability characteristics of the rock failure process, and the steady state and transient seepage after the rock breakage are carried out through the MTS815 or 816 series rock mechanics test system Test, to expand the function of the rock mechanics test system. The current permeability tests that can be carried out include: (1) the stress-strain penetration test of the standard rock sample under the joint action of confining pressure and axial load; (2) the standard rock sample after uniaxial compression fracture (the The cracks are fully expanded and have almost no bearing capacity, and special devices must be designed to achieve the sea...

AI Technical Summary

Problems solved by technology

None of these testing techniques can simulate the drastic changes in permeability properties during rock sample failure

Although the starting point of the permeability characteristic test device in the rock sample destruction process is to observe the sharp change of the permeability characteristic in the rock sample destruction process, due to the omissions in the design of the device (the rock sample is under compression conditions, due to the impact of the sealing material on the rock sample lateral deformation limitation, the rock sample cannot form through cracks after the rock sample is destroyed), so the expected effect cannot be achieved

Other experimental techniques can only reflect quantitative changes in the permeability properties of rock samples

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