Control System of Multi-hydraulic Cylinder Tunnel Simulation Experiment Platform

Abstract

The invention discloses a control system for a tunnel simulated loading experiment platform and provides a control system for a multi-hydraulic-cylinder tunnel simulated experiment platform. According to the control system, hydraulic cylinders are grouped, and inlet and outlet oil paths of the hydraulic cylinders in each group are connected in parallel; force application of each group of hydraulic cylinders is controlled through reducing valves, and stretching out and drawing back of each group of hydraulic cylinders are controlled through reversing valves. The control system is applied to the multi-hydraulic-cylinder tunnel simulated experiment platform, and can solve the technical problems that the cost for configuration of servo valves, data collection cards and sensors is quite high and circuit structures are complex due to large structural size of the experiment platform, improve reliability and reduce the failure rate; the operating difficulty is reduced, and burden of operators is greatly reduced.

Description

technical field [0001] The invention belongs to underground engineering simulation test technology, and in particular relates to a control system of a multi-hydraulic cylinder tunnel simulation test platform for research on the interaction between surrounding rock and tunnel structure, structural stress and deformation simulation test in an anhydrous to high-pressure water environment. Background technique [0002] The indoor simulation test device for the interaction between tunnel structure and surrounding rock, whether it is dynamic simulation or model test, is relatively mature at home and abroad, such as the relevant laboratories in Japan, Germany, the United States and other countries, as well as the Southwest Research Institute of the Ministry of Railways Academy of Sciences , Xi'an Jiaotong University, China University of Mining and Technology, Tongji University and other units have relevant test equipment. However, these test equipment can only simulate the stress c...

AI Technical Summary

Problems solved by technology

[0004] For the tunnel loading experiment platform with multiple hydraulic cylinders, if the above control method is adopted, due to the large structure size of the experiment platform, the cost of configuring servo valves, data acquisition cards and sensors is extremely high, and the circuit structure is quite complicated; There are too many components such as cards and sensors, and the working environment of the system is relatively harsh, which undoubtedly reduces the reliability of the system and increases the failure rate of the system; there are too many valves to be controlled in the system, and the signal acquisition and The output needs to be reflected on the human-computer interaction interface, which makes the operation difficult and inconvenient, and greatly increases the burden on the operator

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