Mold and method for manufacturing intermittent-fissure rock mass simulating test piece

Abstract

The invention discloses a mold and a method for manufacturing an intermittent-fissure rock mass simulating test piece. The mold comprises a bottom plate on which a fixed long side plate, a movable long side plate, movable short side plates, a grooved bottom base plate and a grooved top cover plate are arranged, wherein reinforcing ribs are arranged between the outer side of the fixed long side plate and the bottom plate; a bolt end plate is arranged at the outer side of the movable long side plate and on the bottom plate and is provided with a side edge bolt; the inner end of the side edge bolt pushes against the outer side of the movable long side plate; grooves are formed in the grooved top cover plate and the grooved bottom base plate. The mold can be used for manufacturing simulating test pieces of rock masses under the combination of geometrical parameters of various fissures, and has the advantages that fissures can be accurately positioned, the pouring of the test piece is easy, air bubbles can be easily discharged, de-molding is convenient, and the mold can be used repeatedly; besides, the pouring and curing processes of the test piece can be strictly controlled.

Description

technical field [0001] The invention relates to a technology for making a fissure rock mass simulation test piece, in particular to a mold and a method for making an intermittent fissure rock mass simulation test piece. Background technique [0002] Natural rock mass is composed of complete rock and structural planes of different scales (schistosomes, cracks, joints, faults, bedding planes, shear zones, veins, etc.), and these structures control the macroscopic mechanical properties of rock mass. [0003] At present, with the development of large-scale water conservancy and hydropower projects, transportation projects, mining projects, oil and gas exploration projects, and projects such as underground nuclear waste embedding and carbon dioxide underground storage, in order to achieve safe and economical design of rock mass engineering systems, correct It is very important to evaluate the impact of structural surfaces on the mechanical properties of rock mass such as strength...

AI Technical Summary

Problems solved by technology

[0007] Only grooves are carved on the top plate, and the prefabricated cracked metal sheet is not easy to penetrate and fix, and it is easy to be deflected in the thickness direction of the specimen, and the pre-designed joint arrangement cannot be accurately realized; only vent holes and pouring holes are set on the top plate, When there are a large number of prefabricated cracks, it is difficult to inject the liquid mixture of simulated materials evenly, and the air bubbles are not easy to discharge, which will greatly affect the pouring quality and stability of mechanical properties of the specimen; Pieces are prone to missing corners

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