Seabed landslide evaluation method based on indoor test

An indoor test and evaluation method technology, which is applied in the field of submarine landslide evaluation based on indoor tests, can solve the problems that the influence of submarine landslides cannot be considered at the same time, and achieve the effects of low initial strength, simple preparation method and high sensitivity

Active Publication Date: 2020-05-15
ZHEJIANG UNIV
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Problems solved by technology

[0005] However, most of the current studies use theoretical analysis and numerical calculations, and almost no laboratory test evaluation methods

Method used

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  • Seabed landslide evaluation method based on indoor test
  • Seabed landslide evaluation method based on indoor test
  • Seabed landslide evaluation method based on indoor test

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Embodiment Construction

[0056] An evaluation method for submarine landslides based on indoor tests is realized based on a large cross-section wave flow tank and a new indoor test device for simulating submarine landslides. Described novel indoor test device such as figure 1 As shown, it includes a model box main body 1, a false slope 2, a funnel 3, a soil cutting board 4, a sensor bracket 5 and a gantry lifting device 6; the model box main body 1 is composed of a box body 7 and a base 8, wherein the box body 7 includes gate plate 10, side plate 11, bottom plate 12.

[0057] The two ends of the box 7 are also provided with a rotating shaft 9, the rotating shaft 9 at the rear end can make the box body 7 simulate a multi-angle landslide, and the rotating shaft 9 at the front end is used to lift the front end of the box body during the soil consolidation process, so that the box body The hypotenuse of the body 7 maintains a plane to ensure that when the strength of the soil body is too low, it will not ...

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Abstract

The invention discloses a seabed landslide evaluation method based on an indoor test. The method comprises preparation of structural soft clay and the indoor test. The preparation of the structural soft clay comprises the following steps: doping silicate 525 cement into marine soft soil, adding water to 2 times the liquid limit of a soil body, and uniformly stirring under a vacuum condition, thereby obtaining the structural soft clay, wherein the addition amount of the silicate 525 cement is 2% of the mass of the soft soil particles; the indoor test is realized based on a novel indoor test device for simulating seabed landslide. The device comprises a model box main body, a false slope, a funnel, a soil cutting plate, a sensor bracket and a portal frame lifting device. According to the method, test simulation of the submarine landslide with multiple slope angles and multiple working conditions can be achieved, the method can be combined with an indoor large section wave gutter channel,and the influence of the coupling effect of waves, slope toe scouring and rapid deposition on the submarine landslide is systematically researched, and the systematic method for evaluating the stability of the submarine landslide is obtained.

Description

technical field [0001] The invention relates to a set of test devices capable of simulating seabed landslides with multiple slope angles and multiple working conditions, in particular to an evaluation method for seabed landslides based on indoor tests, which is applicable to the field of marine engineering research. Background technique [0002] As we all know, the conventional energy reserves such as oil and natural gas in the ocean are very rich. According to incomplete statistics, in the world, the offshore oil reserves are about 145 billion tons, accounting for 34% of the world's total oil reserves, of which the proven reserves are about It is 38 billion tons; only in the continental shelf area, the area of ​​oil and gas basins discovered so far reaches 15 million square kilometers, more than 800 oil and gas basins, more than 1,600 oil and gas fields have been discovered, and the geological reserves of natural gas reach about 140 trillion cubic meters . [0003] my coun...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 窦玉喆国振王立忠朱从博芮圣洁周文杰李雨杰
Owner ZHEJIANG UNIV
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