Apparatus and method for simulating submarine landslide resulting from gas hydrate dissociation or earthquake

The apparatus for simulating a submarine landslide, comprising:

• an inclined flume;
• a plurality of sloped sedimentary layers stacked on top of one another in the flume, the sedimentary layers being tapped, and interposed with at least one landslide generation layer therebetween;
• a plurality of landslide generation layers interposed between the sedimentary layers, each of landslide generation layers being made of an unstable material and being thinner than each of the sedimentary layers;
• water is charged into the flume in such a way that a surface of the water is formed in the flume submerging the sedimentary layers;
• and
• at least one vibration generation unit provided under a bottom of the flume, the vibration generation unit applying vibration to the flume,
• wherein the sedimentary layers or the landslide generation layers are collapsed by the vibration applied to the flume, thus generating water wave in the flume.

A test method for simulating a submarine landslide, comprising:

• an injector arrangement operation of moving, upwards or downwards, a plurality of injectors provided in a bottom of an inclined flume and disposing each of the injectors is disposed at a predetermined height in the flume;
• a sedimentary layer tapping operation of:
• stacking a plurality of sloped sedimentary layers on top of one another in the flume;
• tapping the sedimentary layers;
• and interposing a plurality of landslide generation layers between the sedimentary layers;
• a water surface forming operation of charging water into the flume such that a surface of the water is formed in the flume submerging the sedimentary layers;
• a gas/water injection operation of selectively opening or closing each of the injectors to determine a water injection pattern and injecting gas or water into the sedimentary layers or the landslide generation layers;
• a water wave generation operation of collapsing the sedimentary layers or the landslide generation layers using the gas or water supplied from the injectors, thus generating a water wave in the flume;
• a wave height measurement operation of measuring, at opposite ends of the flume, a height of the water wave generated by the collapse of the sedimentary layers or the landslide generation layers;
• and
• a wave speed measurement operation of measuring, at opposite sidewalls of the flume, a speed of movement of the water wave generated by the collapse of the sedimentary layers or the landslide generation layers.

A test method for simulating a submarine landslide, comprising:

• a sedimentary layer tapping operation of:
• stacking a plurality of sloped sedimentary layers on top of one another in the flume;
• tapping the sedimentary layers;
• and interposing a plurality of landslide generation layers between the sedimentary layers;
• a water surface forming operation of charging water into the flume such that a surface of the water is formed in the flume submerging the sedimentary layers;
• a vibration generating operation of operating a vibration generation unit provided under the bottom of the flume and vibrating the flume;
• a water wave generation operation of collapsing the sedimentary layers or the landslide generation layers using the vibration of the flume, thus generating a water wave in the flume;
• a wave height measurement operation of measuring, at opposite ends of the flume, a height of the water wave generated by the collapse of the sedimentary layers or the landslide generation layers;
• and
• a wave speed measurement operation of measuring, at opposite sidewalls of the flume, a speed of movement of the water wave generated by the collapse of the sedimentary layers or the landslide generation layers.