Model test system for measuring characteristics of slurry in shield tunneling machine and control method thereof

Abstract

The invention relates to a model test system for measuring characteristics of a slurry in a shield tunneling machine and a control method thereof, and belongs to the technical field of underground engineering tests. The model test system comprises a test model assembly, a liquid pumping pipe is arranged at the upper end of the test model assembly, a pipeline pump is arranged on the liquid pumping pipe, and a feeding assembly is arranged between the liquid pumping pipe and the upper portion of the test model assembly; a first-stage thin slurry return pipe connected with the liquid pumping pipe is arranged between the feeding assembly and the upper part of the test model assembly, a positive displacement pump is arranged between the feeding assembly and the lower part of the test model assembly, a coarse slurry return pipe is arranged between the positive displacement pump and the feeding assembly, and a slurry discharge pipe is arranged between the positive displacement pump and the lower part of the test model assembly; and a second-stage thin slurry return pipe connected with the first-stage thin slurry return pipe is arranged between the liquid pumping pipe and the lower part of the test model assembly. The system has the characteristics of accurately measuring and researching slurry data, flow characteristics and movement rules in the shield tunneling machine. A problem of difficulty in directly measuring slurry data is solved. And efficient and safe construction is ensured.

Description

technical field [0001] The invention relates to the technical field of underground engineering tests, in particular to a model test system for measuring mud characteristics in a shield machine and a control method thereof. Background technique [0002] With the advancement of urbanization, urban underground engineering construction is becoming more and more extensive. Among them, the shield machine is widely used for its safety, high efficiency, low labor intensity, and does not affect ground transportation. Mud plays a vital role in the tunneling process of the shield machine. [0003] On the one hand, relying on the mud pressure to form a mud film or seepage area on the excavation surface, the strength of the soil body on the excavation surface is improved, and the soil pressure and water pressure on the excavation surface are balanced through the mud pressure to make the excavation surface reach a balance. [0004] On the other hand, mud is used as a conveying medium to...

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Problems solved by technology

[0005] The present invention mainly solves the problems of poor measurement accuracy and difficulty in the prior art, and provides a model test system and its control method for measuring the mud characteristics in the shield machine, which has the functions of accurate measurement and research of the shield machine. Characteristics of mud data, flow characteristics and motion laws

Solved the problem of the difficulty of directly measuring mud data

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