Large-size experimental model preparation device and method based on geotechnical materials

Abstract

The invention relates to a large-size experimental model preparation device and method based on geotechnical materials and belongs to the field of indoor experimental model making for geotechnical engineering and geological engineering. The large-size experimental model preparation device is mainly composed of a high temperature kettle, a molding chamber, a complete molding assembly, a bidirectional fracturing structure, an axial pressure structure, a cutting knife, a telescopic knife holder, a fluid pressure sensor, a separating and metering structure, a sensor control unit and a fixing module. According to the device and method provided by the invention, large-size high-simulation rock experimental models can be provided for indoor scale experiments in geotechnical engineering and geological engineering, the physical and mechanical properties and mineral constituents of the made models can be infinitely close to those of protolith, the strength is far higher than that of a model madethrough 3D printing, and making contents cover undistorted models of common engineering objects such as side slope, tunnels, foundation pits or underground spaces, foundations and the like. Moreover,generation and distribution of faults, fractures and structural surfaces can be manually controlled, and water and rock coupled chemical reaction experiments can be conducted under different temperature and pressure conditions.

Description

Technical field: [0001] The invention relates to an experimental model preparation device and an operation method for simulating the diagenesis process of sedimentary rocks. Specifically, the invention relates to an integrated forming device and operation method for diagenetic control factor simulation and rock mass model for large-scale experimental research, and belongs to the field of indoor experimental model making of geotechnical engineering and geological engineering. It is mainly composed of high temperature kettle, forming chamber, forming supporting components, two-way fracturing structure, axial pressure applying structure, cutting knife, retractable knife seat, fluid pressure applying structure, separation and metering structure, sensor control unit and fixed module. Background technique: [0002] It is a very important experimental method in the field of geotechnical engineering and geological engineering to conduct scale experiments using indoor remodeled rock ...

AI Technical Summary

Problems solved by technology

The physical and chemical properties of the rock mass model made by this method are very different from the rock mass formed in the natural environment, which cannot well reflect some physical and chemical properties of the rock mass itself, and there are also differences between different batch models Low precision, large error and other problems, using this kind of sample to carry out indoor experiments will often cause distortion of experimental results

Moreover, conventional model making methods, except for 3D printing technology, cannot control the formation and arrangement of rock and soil structures while diagenesis, and can only be trimmed after the model is made. This trimming, Most of the time, it is a disturbance to the rock and soil mass, which will destroy the already balanced stress state and affect the subsequent indoor experiments. However, 3D printing technology cannot produce high-strength rock and soil mass models.

Finally, the existing diagenetic simulation sample preparation devices are small in size, and the size of the samples produced is mostly at the centimeter level, which cannot meet the requirements of indoor proportional experiments in geotechnical engineering and geological engineering

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