Multifunctional equipment for simulating underwater soil body cutting and rake tooth optimization

Abstract

The invention relates to multifunctional equipment for simulating underwater soil body cutting and rake tooth optimization. The multifunctional equipment comprises a test soil tank and a soil tank cover plate which constitute a sealed space, a spring loading device arranged in the test soil tank, a rake tooth fixing device arranged on the spring loading device, a rake tooth arranged on the rake tooth fixing device as well as a pore water evaporation observation device arranged on the soil tank cover plate, wherein the test soil tank is sequentially filled with a test soil body and a sealing water body, the mounting angle of the rake tooth is adjusted by the rake tooth fixing device, the test soil body is cut under the action of the spring loading device, and the evaporation degree of the test soil body during cutting is observed through the pore water evaporation observation device. Compared with the prior art, the multifunctional equipment is simple in structure, easy to transform, high in reliability, wide in applicability and low in cost; an underwater soil body cutting process and a cutting resistance formation mechanism can be reproduced directly; quantitative tests of the lowest traction power required by underwater soil body cutting, the optimal advancing speed of the rake tooth and pore water evaporation can be realized easily.

Description

technical field [0001] The invention relates to the field of dredging engineering in water conservancy engineering, in particular to a multifunctional device for simulating underwater soil cutting and optimizing rake teeth. Background technique [0002] With the rapid development of modern dredging projects, the excavation depth becomes deeper and the scale increases, which requires more and more dredging capacity and dredging technology improvement of dredgers. At the same time, the bottom materials of major ports and access channels on my country's long coastline are complex and changeable, often encountering dense compacted silt, fine sand and hard clay. This difficult-to-dig soil directly affects the dredger's performance. Production efficiency and construction progress. How to improve the sand excavation efficiency of the dredger is an urgent problem to be solved. The performance of the harrow head used in trailing suction dredgers directly affects its construction eff...

AI Technical Summary

Problems solved by technology

However, at present, there is still a lack of practical and effective analysis methods at home and abroad, usually relying on engineering experience to design rake teeth, which has great blindness

In order to make up for the limitations of theoretical analysis, the independent research and development of new rake teeth urgently needs to be analyzed in combination with simple and easy indoor model tests. The key technology is how to effectively simulate the high negative pressure of pore water in the process of underwater soil cutting and quantitative analysis of pore water vaporization intensity, research and development of new rake teeth from the model test of the formation mechanism of cutting resistance of underwater soil, so far no reports of such simulation devices have been found

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