Anchor rod forcemeter for testing underground engineering model

Abstract

The invention relates to an anchor rod forcemeter for testing an underground engineering model. The anchor rod forcemeter comprises two trays and a cylindrical alloy pipe arranged between the two trays, wherein two anchor rod holes for enabling an anchor rod to penetrate through vertically are formed in the pipe wall of the cylindrical alloy pipe, an optical fiber grating strain sensor is fixedly arranged on the pipe wall of the cylindrical alloy pipe, and the optical fiber grating strain sensor is connected to an optical fiber grating data acquisition system through an optical fiber. When in use, the anchor rod is inserted into the anchor rod holes of the anchor rod forcemeter for testing the underground engineering model, the two trays are in contact with the cylindrical alloy pipe, external force is firstly applied for measuring an external force-strain curve, then the anchor rod is further driven into the model to be tested for measuring the actual strain, and the stress of the anchor rod is further obtained by comparing with the curve. The anchor rod forcemeter disclosed by the invention has the advantages of simple structure and convenience in use.

Description

technical field [0001] The invention relates to a bolt dynamometer, in particular to a bolt dynamometer for underground engineering model tests. Background technique [0002] The geomechanics model test is to convert the actual project into an indoor model for test simulation according to the similarity theory, which is conducive to highlighting the main contradictions in the complex test process, and is easy to grasp and discover the inner connection of the phenomenon. Among them, the underground engineering model test is the tunnel It is an effective method and means to conduct simulations for underground projects such as mines, coal lanes, etc., and to guide the design and construction of underground projects. In the underground engineering model test, after the cavern is excavated, it is necessary to simulate the support of the cavern, such as simulated bolt support. At present, the simulation technology of the bolt in the model test is gradually becoming mature, but the...

AI Technical Summary

Problems solved by technology

In the underground engineering model test, after the cavern is excavated, it is necessary to simulate the support of the cavern, such as simulated bolt support. At present, the simulation technology of the bolt in the model test is gradually becoming mature, but the force monitoring In the absence of effective means, it is difficult to conduct an in-depth analysis of the support status of the bolt support components during the construction simulation process of the model test

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