Mold for producing cracked rock test piece of different dip angles and production method thereof

Abstract

The invention relates to a mold for producing a cracked rock test piece of different dip angles and a production method thereof. A mold shell is a square cover-less box body formed by encircling a soleplate, a front side plate, a rear side plate, a left side plate and a right side plate, the middle parts of the front and rear side plates are correspondingly provided with a hole, and a rotation slot is respectively installed in each hole; the rotation slot is an integrally-formed T-shaped structure comprising a slot plate and a connection screw which is vertically raised from the bottom of the plate; the slot plate is installed in the box body, the connection screw respectively stretches out from the holes in the front and rear side plates, and the end part of the connection screw is fixed by a nut; a crack simulation frame is clamped between the two slots, and two ends of the crack simulation frame are respectively embedded into the slot; the crack simulation frame consists of an iron framework and tapes in the frame, the tapes are arranged in a net shape, and two ends of each tape are adhered on the edge of the frame. When the mold is in use, the angle of the crack simulation frame can be adjusted randomly according to the requirements, a rock test piece material is poured into the mold after the angle is determined so as to produce the crack rock test piece of different dip angles. The mold can conveniently, rapidly and accurately adjust the dip angle of the crack and is simple in structure, easy to assembly, convenient to disassemble and reusable.

Description

technical field [0001] The invention relates to the technical field of similar model tests of fractured rocks, in particular to a mold for making test pieces of fractured rocks with different inclination angles and a manufacturing method thereof. Background technique [0002] There are a large number of random natural defects in the rock. As a heterogeneous multi-phase composite structure, the law of deformation and failure mechanics is mainly affected by the action mode of the surrounding environment; Different engineering loads lead to significant differences in the form of mechanical responses, which are characterized by nonlinearity, discontinuity and anisotropy. Engineering practice shows that the instability of rock mass engineering is mostly caused by the expansion of defects such as internal joints or cracks. Therefore, it is very necessary to study the physical and mechanical properties of rock mass such as stress, stress-strain or failure, especially the mechanica...

AI Technical Summary

Problems solved by technology

The existing technology results in a poor fit between the upper and lower walls of the rock fracture surface model, which cannot reflect the real situation of the fracture surface; and the surface shape of the rock fracture surface is an important factor affecting its shear strength, so it will cause large errors in the experimental results

It is difficult to locate the fracture surface, and the model needs to be remade every time the fracture surface parameters are adjusted, which leads to low work efficiency, long processing cycle and waste of model materials

It is difficult to accurately simulate the position and inclination of the fracture surface in the rock-like test block, resulting in low accuracy of the test block and affecting the reliability of the test data

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