High crustal stress genuine three-dimensional load model trial system

Abstract

The invention relates to a true three-dimensional loading model experiment system for highland stress, comprising an intelligent hydraulic control system, a high-pressure loading system and a counterforce device system, wherein, the high-pressure loading system is arranged in the counterforce device system; an intelligent hydraulic control test bed of the intelligent hydraulic control system is connected with the high-pressure loading system through a high-pressure oil pipe; the high-pressure loading system comprises a jack and loading plates; one end of the jack is connected with the loading plates; the other end of the jack is connected with the counterforce device system; and six loading plates connected with the jack respectively cling to front, rear, left, right, upper, lower side surfaces of a trial model. The system has the advantages of synchronous and independent highland stress loading, high loading automation degree and loading accuracy, more loading functions, the realization of the axial loading opening of a cavity, high rigidity of the loading system, good integral stability, simple and convenient operation and so on. The system can be widely used in deep underground cavity model experiment and research in engineering fields such as hydroelectric power, transportation, energy, mine, national defense and so on.

Description

technical field [0001] The invention relates to a high ground stress true three-dimensional loading model test system used in the fields of hydropower, transportation, energy, mines and deep underground cavern engineering for national defense. Background technique [0002] The 19th century is the century of bridges, the 20th century is the century of high-rise buildings, and the 21st century is the century of human development and utilization of underground space. With the rapid development of my country's national economy, many underground projects under construction and to be newly built continue to go deep. Whether it is underground tunnels for mining of mineral resources, underground tunnels for transportation construction, and underground caverns for hydropower development, they are gradually developing to a depth of more than one kilometer or several kilometers. With the increase of burial depth, a series of new characteristic scientific phenomena such as zonal rupture...

AI Technical Summary

Problems solved by technology

The size of the test frame is large, and it can be loaded according to the principal stress direction, but the lateral deflection and deformation of the test frame is large, and the loading system cannot realize high ground stress loading

[0006] (4) "Journal of Rock Mechanics and Engineering", No. 21, 2004, introduced a plane strain roadway model test rig with a model size of 1m×1m×0.2m and a vertical arrangement. This test rig cannot realize true three-dimensional loading of high ground stress

This testing machine is mainly used for loading under high temperature conditions. Although the loading pressure is high, it cannot realize the true triaxial loading of rock mass specimens, and the sample size is small

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