Multi-field real-time monitoring and servo pressurizing bottom friction testing system for large-size rock-soil body

Abstract

The invention provides a multi-field real-time monitoring and servo pressurizing bottom friction testing system for a large-size rock-soil body. The multi-field real-time monitoring and servo pressurizing bottom friction testing system comprises a conveyor belt driving system, a model vertical uniform distribution force loading servo system, a friction force determination system and an image acquisition and resolving system. The model vertical uniform distribution force loading servo system comprises a hydraulic column and a pressurizing plate; the pressurizing plate is internally provided with a pressure sensor and is connected with a background controller; the controller is connected with a servo motor connected with a hydraulic oil tank; the conveyor belt driving system comprises an alternating current motor, a frequency converter and a speed monitor; the friction force determination system is composed of a stress sensor and an outer data receiver; the image acquisition and resolving system is composed of a high-speed camera, a sliding rail, an illumination lamp, a scale and a background computer. According to the multi-field real-time monitoring and servo pressurizing bottom friction testing system provided by the invention, a large-size quantitative simulation test of deformation damages of the rock-soil body under the action of gravity and an evolution process of the rock-soil body can be realized; different stress fields are simulated by changing normal stress on a model to be detected and a stress field and a displacement field of the model are monitored in real time.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, and relates to a test device for a base friction test for simulating deformation and destruction of rock and soil bodies under the action of gravity. Background technique [0002] The bottom friction theory believes that the gravity on the model can be simulated by applying resistance along a certain direction on the plane of the two-dimensional model. Based on the bottom friction theory to simulate the failure mechanism and evolution process of rock and soil under the action of gravity, it began in the 1970s. In 1970, the Imperial College of Technology in the United Kingdom manufactured the first bottom friction tester and used it to simulate slopes, tunnels and underground. The failure process of rock and soil mass in roadway engineering and the study of the influence law between various geological elements. Under the long-term action of gravity, the phenomenon of rock and soi...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a new type of multi-field real-time monitoring servo pressurized bottom for simulating the deformation and failure process of large-scale rock and soil mass under the action of gravity in view of the above-mentioned deficiencies in the existing bottom friction testing machine technology. Friction test system designed to solve the following problems:

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