A dual-module control test system for gas breakthrough/permeability characteristics of rock and soil materials

Abstract

A dual-module control test system for gas breakthrough / permeability characteristics of rock and soil materials, including a gas source, a booster pump, a high-pressure fracturing / breakthrough test module ①, a low-pressure permeation test module ② and a mass spectrometer, and a high-pressure fracturing / breakthrough test module ① Including valve A, first steel cylinder, upper exhaust pipeline, valve C, test gauge M1, valve E, first pressure chamber, test gauge M3 and upper end exhaust port connected in sequence, the low air pressure simulation branch includes sequentially Connected pressure regulator, valve B, second cylinder, lower exhaust line, valve D, test gauge M2, valve F, second pressure chamber and lower end exhaust port, M1, M2 and M3 are all built-in pressure and temperature The modules are respectively connected to the first computer and the second computer, and the gas source is connected to a booster pump and then divided into two paths of test module ① and test module ②, and finally connected to the mass spectrometer. The invention can accurately test the gas breakthrough characteristics or gas permeability characteristics of rock and soil materials and the barrier / adsorption characteristics of rock and soil materials to different fluids under the condition.

Description

Technical field [0001] The present invention relates to a gas permeation test apparatus of a geostate body, in particular a geosetic material gas breakthrough / permeable characteristic dual module control test system. Background technique [0002] In the field of geological storage and carbon dioxide geological seals in geological storage and carbon dioxide geological seals in geological storage and carbon dioxide geological seals in geological storage and carbon dioxide geological seals. Taking nuclear waste treatment as an example (but not limited to this aspect), in the long-term evolution process, the repository will generate a large number of gases, so how to evaluate and test buffer materials (such as bentonite) and the airtightness of the surrounding rock are a very very Important issues. [0003] The currently common research method is to obtain geotechnical samples at the actual engineering site, and simulate the actual conditions and environment in the laboratory, then...

AI Technical Summary

Problems solved by technology

With the continuous generation of gas, the air pressure in the repository will gradually increase, and the accumulated gas will escape to the outside through the buffer material, and the accumulated air pressure will have a greater impact on the stability and safety of the entire repository

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