An experimental device and method for simulating the destabilization of submarine slopes caused by the decomposition of combustible ice under complex terrain conditions

Abstract

The invention discloses an experimental device and method for simulating the destabilization of a seabed slope caused by the decomposition of combustible ice under complex terrain conditions. The experimental device includes a support system, a landslide induction system, a simulated stratum for the decomposition of combustible ice, a temperature control system and a control system: The support system changes the ups and downs of the inner surface of the water tank through the telescopic lifting rod to achieve the purpose of simulating the real topography of the seabed. The landslide induction system sprays gas similar to the decomposition of combustible ice through small holes, and the temperature control system is used to control the gas similar to the decomposition of combustible ice. The overall control system automatically realizes the change of the height of the telescopic lifting rod through computer control, so as to drive the change of the surface layer inside the water tank to simulate the change of the terrain. The cooperative work of each system can accurately simulate the decomposition of combustible ice due to the change of environmental conditions. The whole process of submarine landslide.

Description

technical field [0001] The invention belongs to the technical field of marine engineering geology, and in particular relates to an experimental device and method for simulating the destabilization of seabed slopes caused by the decomposition of combustible ice under complex terrain conditions. Background technique [0002] Submarine landslide is a common marine geological disaster in offshore deltas. It is a rapid sliding process of unconsolidated soft sediments on the seabed along the slope under the action of gravity. There are some differences in slope problems, but they are essentially the formation and gradual expansion of shear bands in the soil body. [0003] At present, the experimental research related to submarine landslides is basically limited to the damage that occurs on slopes with fixed inclination angles, which cannot truly simulate the complex topography of the seabed, and has insufficient guiding significance for actual engineering construction. At the sam...

AI Technical Summary

Problems solved by technology

[0003] At present, the experimental research related to submarine landslides is basically limited to the damage that occurs on slopes with fixed inclination angles, which cannot truly simulate the complex terrain of the seabed, and has insufficient guiding significance for actual engineering construction.

At the same time, the existing submarine landslide devices focus on the simulation of submarine landslides induced by earthquakes and combustible ice mining, and the research on submarine landslides caused by the decomposition of combustible ice due to changes in the marine environment is relatively insufficient

Images