A similar simulation test device and test method for surrounding rock damage of expansive soft rock roadway

Abstract

The invention provides an expansive-soft-rock roadway-surrounding-rock damage analog simulation test apparatus and a test method. The apparatus comprises a basic framework structure, a model roadway and a connection bolt. The basic framework structure concretely comprises an upper-side framework, a lower-side framework, a front-side framework, a rear-side framework, a left-side framework and a right-side framework, and each side framework is prepared through processing of a thick and a thin organic glass sheets. The model roadway is a hollow straight-wall semicircular arch roadway model which is prepared by processing a thin organic glass sheet. Accurate excavation of the roadway can be realized at the excavation port position by combining the concrete dimension and shape of the model roadway. Assembling of the analog simulation test apparatus is realized by the six side frameworks through a manner of slot connection and bolting. The apparatus is capable of precisely monitoring the expansion pressure of the surrounding rock and is capable of vividly simulating the expansion deformation process of surrounding rock.

Description

technical field [0001] The invention belongs to the technical field of surrounding rock control in tunnel engineering, underground engineering and mining engineering, and in particular relates to a similar simulation test device and test method for surrounding rock damage in expansive soft rock roadways. Background technique [0002] With the intensification of coal mining, the resources in the east are being exhausted day by day, the conflict between resources and environment constraints in the central part is becoming more and more serious, and the development of resources is being transferred to the west at an accelerated pace. The western region is rich in resources and has great development potential. It is estimated that by the end of 2015, the coal output in the western region will reach 2.09 billion tons, accounting for 53% of the national coal output. The sustained and healthy development of mines in the western region plays an important role in ensuring national ene...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defect of the test device in the similar simulation research of the existing expansion soft rock damage evolution, and provide a kind of expansion soft rock roadway surrounding rock damage similar simulation test device and test method. The device is simple and convenient, easy to operate Convenience, surrounding rock expansion conditions consistent with the site, image reproduction of surrounding rock expansion process, accurate measurement of surrounding rock expansion pressure, etc.

Images