Large-size three-dimensional physical model displacement control overload test system and method

Abstract

Disclosed is a large-size three-dimensional physical model displacement control overload test system and method. The system comprises a base, an anti-deformation prestress loading frame assembly, a load applying assembly, a model sample making and transferring assembly and a hydraulic loading system assembly. The anti-deformation prestress loading frame assembly and the model sample making and transferring assembly are both arranged on the base, the load applying assembly is arranged on the anti-deformation prestress loading frame assembly, and is connected with the hydraulic loading system assembly, and with matching between the load applying assembly and the hydraulic loading system assembly, overload test under multiple-face multiple-point cooperative displacement control to model samples is carried out. The system has overload capacity of large-size three-dimensional physical models under multiple-face multiple-point cooperative displacement control; with application of a new designed frame structure, deformation of test equipment in the loading process can be controlled effectively and reliability of test data can be improved; since the artificial model sample making and transferring mechanism is equipped initially, the requirement on precision test of the artificial model samples in the making stage is met.

Description

technical field [0001] The invention belongs to the technical field of large-scale three-dimensional physical model tests, in particular to a large-scale three-dimensional physical model displacement control overload test system and method. Background technique [0002] The large-scale three-dimensional physical model test is based on the similarity theory. By configuring artificial model materials with properties similar to those of engineering rock mass, and carrying out excavation and monitoring tests under different boundary loading conditions, it can effectively reveal the deformation and cracking of rock mass under the influence of human engineering activities. evolution mechanism. [0003] At present, large-scale three-dimensional physical model tests have been widely used. However, as underground engineering construction and resource mining continue to enter the deep, the volume and complexity of deep caverns are also increasing. In scientific research and engineerin...

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Problems solved by technology

[0009] Aiming at the problems existing in the prior art, the present invention provides a large-scale three-dimensional physical model displacement control overload test system and method, which for the first time has the overload capability under multi-surface and multi-point coordinated displacement control, and adopts a newly designed prestressed frame structure, It can effectively control the deformation of the test equipment during the loading process and improve the reliability of the test data; for the first time, it is equipped with an artificial model sample preparation and transportation mechanism, which effectively separates the preparation area of ​​the artificial model sample from the loading area to meet the requirements of the artificial model test. The accuracy detection of the sample in the preparation stage avoids the influence of the artificial model sample on the test data due to insufficient preparation accuracy

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