Testing device for simulating natural gas hydrate decomposition induced seabed slope instability

Abstract

The invention discloses a testing device for simulating natural gas hydrate decomposition induced seabed slope instability and relates to a geotechnical engineering centrifugal model testing device. Amold tank comprises a glass sealed tank, a temperature control system, a pressure control system, a volume loss simulation system, a photographing system and a data acquisition component, wherein theglass sealed tank is provided with an openable and moveable upper sealing cover; the upper sealing cover is used for pressurizing water through a hydraulic system to simulate different water pressureintensities; the mold tank is filled with a seabed slope model; a temperature control component comprises a heater, a thermometer and a temperature control circuit; a gas introduction system comprises a gas tank and a gas guide tube; the data acquisition component comprises a scale ruler, a pore water pressure gauge and a film pressure sensor; the volume loss simulation system comprises a liftingplatform below a soil slope and a lifting speed control system. By controlling water and temperatures, natural gas hydrate decomposition induced seabed slope instability can be simulated, and the testing device has the characteristics of convenience in operation, simplicity in structure, precise control, and the like.

Description

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AI Technical Summary

Benefits of technology

This patented describes an apparatus used to study hydrocarbon-based fluids (natural or manmade) at sea level. It uses various techniques such as controller systems, sensory devices like cameras, computer networks, and wireless communication technologies to measure these conditions over large areas. By doing experiments with varying environmental factors, researchers aimed to predict how well they will behave when exposed to them. They found that even small variations could lead to unpredictable results. Additionally, there was a coolant system consisting of several components including air boxes and gas tubes to precisely regulate the water'pressure and slope soil levels throughout testing. Overall, this technology allows scientists studying the behavioral response caused by decompositions from naturally occurring sources, providing valuable insights into the stability problem faced by tectonic plates near coastlines.

Problems solved by technology

This patents discuss how it can happen that when there're too much liquid hydrocarbons (gas) from sea floor sediments accumulate around certain parts of our planet called crustacean shellfish shelf beds where they form tiny holes filled with solid material like calcium carbonate. These small spaces allow gases such as methane to escape through openings at different points along these cracks. When this happens, the surrounding ocean becomes unstable due to the buildup of heavy snow layers above them. To prevent damage during excavations, researchers conducted experiments over several decades ago searching for ways to break up clumps of rock before drilling into deeper waters. However, current methods were limited because they resulted only partially effective in breaking down larger rocks without causing significant harm to marine ecosystems.

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