Comprehensive shear tester for anchoring bodies and test method thereof

Abstract

The invention relates to a comprehensive shear tester for anchoring bodies, which comprises a bottom plate, a left vertical plate and a right vertical plate are arranged on the bottom plate, a top plate is arranged at the upper ends of the left vertical plate and the right vertical plate, a left jacking cylinder and a right jacking cylinder are arranged on the upper surface of the bottom plate, aleft pressing cylinder, a middle pressing cylinder and a right pressing cylinder are fixedly arranged on the lower surface of the top plate, a first test box is placed on the left jacking cylinder, asecond test box is placed on the right jacking cylinder, a third test box is arranged between the first test box and the second test box, and the interiors of the first test box, the second test box and the third test box are connected together in series through an anchor rod or an anchor cable. The invention further discloses a test method for the comprehensive shear tester for anchoring bodies.The comprehensive shear tester can be widely applied in the performance test of various anchor rods or anchor cables, and can accurately test the operating characteristics of the anchor rod or the anchor cable under the effect of shear, test results are reliable, the shear fracture of the anchor rods and the anchor cables in the process of production can be effectively reduced, and a scientific basis can be provided for mine supports and the like.

Description

technical field [0001] The invention belongs to the technical field of coal mine roadway support, and in particular relates to an anchor body comprehensive shearing experiment device and an experiment method thereof. Background technique [0002] Since the 1990s, bolt support has been widely used in coal mines due to its remarkable technical and economic advantages, and it is a revolution in roadway support. A large number of experts and scholars have done a lot of work in support theory, parameter design methods and effect monitoring, and have achieved many meaningful results. However, bolt support failure still occurs from time to time. Anchor shear failure has become the primary problem of anchor failure. Therefore, there must be sufficient research on the properties and structure of the roof rock formation and the anchoring characteristics of the bolt. However, the underground environment of coal mines is quite harsh, and it is difficult to obtain the above conditions...

AI Technical Summary

Problems solved by technology

However, the existing bolt shear research cannot simulate the actual stress on the bolt by the surrounding rock of the roadway, and the conclusions drawn may not have much significance for practical engineering applications. Although some experimental devices can simulate some actual engineering situation, but the function is single, the operation is inconvenient, and it is not targeted, so it is not very economical and convenient for practical application

Therefore, the development of a comprehensive simulation experiment device with a simple and reasonable structure that can simulate the force of the bolt can effectively solve the problems of time-consuming and labor-intensive and low accuracy of the existing technology, and can meet the double-shear simulation experiments of different types of bolts. , so as to effectively reduce the occurrence of bolt support failure, and also provide a scientific basis for geotechnical engineering such as water conservancy, tunnels, and mines

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