Annular cutting device

Abstract

The invention relates to an annular cutting device which comprises a base, a rotary table, a rotary drive mechanism, an upper fixing ring, a lower fixing ring and a vertical loading mechanism, wherein the rotary table is mounted on the base; the rotary drive mechanism is connected with the rotary table; an annular base plate is mounted on the rotary table; an organic glass water groove is fixedly connected with the annular base plate to form a whole body; the lower fixing ring is arranged at the bottom of the organic glass water tank; a porous ceramic ring is arranged at the bottom of the lower fixing ring; the upper fixing ring is arranged on the lower fixing ring through the vertical loading mechanism; a rock soil sample is arranged on the porous ceramic ring; an annular loading plate is pressed on the porous ceramic ring on the rock soil sample; the annular loading plate is connected with the vertical loading mechanism; the vertical loading mechanism comprises a load force arm, a central main shaft, a load bracket and a torque arm; the torque arm is transversely arranged in the load bracket; tangential load force measurement rings are mounted at two ends of the torque arm; the tangential load force measurement rings are adhered to the load bracket. According to the annular cutting device, rock soil movement cutting strength parameters can be accurately measured and easily detected, the price is low, and the maintenance expense is low.

Description

1. Technical Field: [0001] The invention relates to an experimental device for measuring the shear strength of rock and soil movement in the field of geotechnical engineering, and specifically relates to an annular shear device. 2. Background technology: [0002] The annular shearing device is an indoor experimental device for basic geology, which is mainly used for simulating the formation process of mudstone smear and determining rock mechanical parameters in an underground environment. The annular shearing device can determine the change law of the corresponding rock shear strength with displacement growth before and after the formation of mudstone smear, and it can meet the permeability measurement of mudstone smear under different fault distances. [0003] The ring shear experiment is a process in which the rock sample is loaded into the sample ring, and vertical pressure is applied to the sample through the upper pressure plate, and on this basis, a certain torsional shear fo...

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Problems solved by technology

[0004] At present, the annular shearing device developed internationally is mainly aimed at the determination of shear strength parameters of rock and soil movement, which cannot meet the requirements of applied pressure and device strength for geological process simulation, and cannot measure the permeability of the shear zone, and is expensive and maintains high costs.

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