Three-dimensional model testing system of deep mine construction engineering

Abstract

The invention discloses a three-dimensional model testing system of a deep mine construction engineering, which comprises a hydraulic loading system, a control system, a data monitoring system and a counterforce frame device, wherein the hydraulic loading system comprises a servo oil source group and a servo actuator group which are correspondingly communicated, and an actuator support frame usedfor supporting the servo actuator group; the counterforce frame device comprises a rectangular-ambulatory-plane main frame body, a gate type counterforce frame, a rear loading frame, a drive device and a wheel type bracket, a gate type counterforce frame shaft is connected to the side surface of the rectangular-ambulatory-plane main frame body, the rear loading frame corresponds to the gate type counterforce frame, and the servo actuator group is respectively fixed on the inner side end faces of the working ends of the rectangular-ambulatory-plane main frame body and the rear loading frame through the actuator support frame. The three-dimensional model testing system has the advantages of reasonable structure design, simple operation, convenience and flexibility in use, actual and reliable space simulation of a three-dimensional model, wide application range and strong adaptability.

Description

technical field [0001] The invention relates to a test system for a three-dimensional model of deep mine construction engineering, which can be used for theory, test research and practical teaching of mine construction. Background technique [0002] The main methods of scientific research in the field of large-scale geotechnical engineering include: theoretical derivation, laboratory model test, field test and computer simulation. Among them, the laboratory model test has irreplaceable advantages of several other research methods. [0003] Since the beginning of the last century, some western countries began to use the model test method to study structural problems, and thus established similar theories. With the development of the similarity model theory, many western countries began to apply the similarity model theory to the field of underground engineering, and designed a number of underground engineering model experimental devices. In China, since the 1970s, Wuhan Bra...

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Problems solved by technology

It can carry out geomechanical model tests of four types of typical projects, such as caverns, caverns, slopes and foundation pits, and model tests can be carried out under two conditions of plane stress and quasi-plane strain; uniformly distributed loads can also be added to the model boundary Ladder-shaped load; however, the device is a plane model test system and cannot perform three-dimensional tests

[0006] The urban underground engineering similar simulation test system of China University of Mining and Technology (Beijing) can simulate various urban underground engineering such as subway tunnels, foundation engineering, slope stability and trenchless, and can realize the simulation of the impact of groundwater on underground engineering; but the The test system is mainly used in shallow underground engineering, and cannot be used for deep geomechanical model tests

[0007] China University of Mining and Technology (Xuzhou) has a true triaxial roadway plane model test bench, the model size is 1m×1m×0.2m, and the loading method is hydraulic pillow loading, which belongs to the quasi-planar model and is mainly used for roadway model loading, but its model size is relatively small. Small and allowable deformation of the test bench is small, and high ground stress model tests cannot be carried out

[0008] Shandong University’s high ground stress quasi-3D visual model test bench device and combined 3D geomechanics model test bench, the size of the test system device is relatively large, and can carry out model tests under various geological conditions, but the test device is not flexible enough and can be expanded less functional

[0009] Other 3D model test systems also have different problems, such as the inability to conduct water-solid coupling tests, the inability to simulate blasting engineering, and the inability to conduct stope model tests and roadway model tests at the same time.

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