Numerical control air pressure flexible loading experimental device

Abstract

The invention relates to a numerical control air pressure flexible loading experimental device, comprising an air loading and unloading device, a visual man-machine interactive interface and an air pressure numerical control system, wherein, the air pressure loading and unloading device is used in the internal part and external part of an experimental model; the air loading and unloading device is connected with the air pressure numerical control system through a line; and the air pressure numerical control system is connected with the visual man-machine interactive interface through a line. When the invention is used, operators input an air-pressure value or an air pressure variation curve through the visual man-machine interactive interface; and the air pressure numerical control systemautomatically controls air pressure loading of the internal boundary and external boundary of the experimental model after reading an air pressure instruction, and dynamically monitors, displays and stores the air pressure variation in real time. The air pressure flexible loading device effectively realizes air pressure loading digitization, visualization and automation of the structural model. The invention has the advantages of evenly distributed boundary stress, no environmental pollution, high precision, accurate control, convenience, shortcut, digitization, visualization and automation and wide application range and the like.

Description

Technical field [0001] The invention involves a loading experimental device, especially a CNC gas pressure flexible loading experimental device. Background technique [0002] With the rapid development of transportation infrastructure and the vigorous development of underground resource development, the underground cave room as a major underground structure type has been widely used in the field of hydropower, transportation, resources, and energy.More and more attention and attention.With the increase in underground engineering and the increase in the scale of engineering, the plans to build the engineering geological conditions and hydrogeological conditions of the rock body of the underground engineering region are becoming increasingly complicated.In addition to the research and numerical calculation methods, it is necessary to rely on model experiments to analyze and evaluate the stability of the underground cave excavation rock stability to effectively reveal the mechanical...

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Problems solved by technology

Although its loading is in the form of air pressure, it cannot be loaded by numerical control air pressure

[0007] (4) "Journal of Rock Mechanics and Engineering", No. 21, 2004, introduced a plane strain roadway model loading control system, which uses hydraulic jacks for rigid loading, and cannot perform flexible loading with numerical control air pressure

Its loading adopts rigid loading of hydraulic jack, and cannot carry out flexible loading of numerical control air pressure

[0009] (6) "Journal of Civil Engineering" No. 12 in 2005, and the Chinese patent application number 200510045291.7 introduced a new type of rock and soil geomechanics model experiment system, which uses hydraulic jacks for rigid loading, and cannot perform flexible loading with numerical control air pressure

Its loading adopts rigid loading of hydraulic jack, and cannot carry out flexible loading of numerical control air pressure

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