Integrated soil column simulation device for multi-process online monitoring under different temperature and pressure conditions

Abstract

The invention provides an integrated earth pillar simulation device for multi-process on-line monitoring in a condition with different temperatures and pressures. The device comprises a pressurization apparatus, a pressure chamber which is pressurized by using the pressurization apparatus and a gas-liquid collection apparatus; the pressurization apparatus comprises a servo motor, a decelerator, a leading screw, and a pressure sensor; the pressure chamber is provided with a sealed pressing part, a sealing part, and a sample chamber, wherein the sample chamber is provided with a drain tank and a screwed joint, and a sidewall of the pressure chamber is internally provided with a heating chamber and a probe hole opening; and the gas-liquid collection apparatus comprises a capillary, a gas-liquid separation apparatus, an air bag, a gas collection bag, a titration apparatus and a liquid collection bottle. Temperature, pressure, different environment factors and other real conditions are fully considered, and modern advanced sensing, automation and other technologies are integrated, so that real burying and evolution processes of unconsolidated sediments with large time scale are simulated, and remodeling and on-line monitoring of compacting, consolidating, dehydrating and diagenesis processes of the unconsolidated sediments in the condition with different temperature and pressure are carried out.

Description

technical field [0001] The invention relates to an integrated soil column simulation device for multi-process on-line monitoring under different temperature and pressure conditions, which is mainly used in the field of geological technology, and can also be used in technical fields such as geotechnical engineering, sedimentology and environmental science. Background technique [0002] Loose sediment is a kind of unconsolidated fine-grained or particulate sediment deposited in still water or weakly dynamic water environment, formed by physical, chemical and biochemical actions, with complex composition, high water content and organic matter content, Complex mineral composition, abundant microorganisms and a certain amount of gas. [0003] During the process of burial evolution, the muddy sediments were continuously covered by new sediments, the overlying load pressure increased continuously, the pores were continuously compressed, and a large amount of pore water was released...

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Problems solved by technology

[0004] However, although the current experimental studies on organic matter hydrocarbon generation simulation, diagenesis simulation and biogas simulation have carried out indoor simulation of silt burial from different angles, the function is single and cannot realize automatic control and online monitoring. The temperature, pressure, and fluid composition under the environment are rarely or too simplified, and the function of automatic regulation of temperature and pressure cannot be realized, and these existing simulation experimental devices hardly involve the study of the evolution process.

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