An on-site simulation test device for the migration distance of boulders under the action of tidal currents

Abstract

The invention discloses an onsite simulated tester for the migration distance of a boulder under the trend effect. The tester comprises a pedestal, a simulated bed, a conductive film, electrodes, indicators and an elastic separator; the simulated bed is arranged on the pedestal, and a sealed accommodating space is formed between the pedestal and the simulated bed; the simulated bed includes an elastic fluctuating part; the conductive film is arranged in the inner wall of the fluctuating part; the electrodes are arranged on the pedestal, and correspond to relative recess positions of the fluctuating part respectively; the indicators are connected with the electrodes respectively; the elastic separator is arranged between the simulated bed and the pedestal; and the boulder presses down the simulated bed, so that the simulated bed is recessed and deformed, and the conductive film in the recessed position is connected with the electrode, the indicator indicates the location of the boulder, and migration distance data of the boulder is obtained. The onsite simulated tester realizes onsite actual measurement for the boulder migration process under the trend effect, has great significance in researching an evolution process from rubbles to the boulder, a transport process of rock and soil bodies in the bench, interaction between waves and the rock and soil bodies and the like, and is simple in structure, convenient to operate and helpful for large-scale popularization.

Description

technical field [0001] The invention belongs to the field of marine geology, and in particular relates to an on-site simulation test device for boulder migration distance under the action of tidal currents. Background technique [0002] my country's coastline is relatively long, with a total length of 32,000 kilometers. In the longitudinal coastline, rocky coast is an important type. Due to diagenesis and weathering, coastal rock mass generally develops more joints and fissures. Under the long-term action of gravity and gravity, it gradually collapsed and fell on the beach. Under the effect of onshore current and rip current, the falling rock blocks move back and forth in the direction perpendicular to the shoreline. During the migration process, the edges and corners of the rocks are gradually worn away and become boulders. The migration distance is related to the shape of the block, rock density, tidal flow velocity, water depth and bank slope, etc. Generally, the higher t...

AI Technical Summary

Problems solved by technology

But at present, for the migration distance of boulders, in addition to theoretical calculations, there is no effective device for on-site measurement

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