An experimental device for research on stratum identification technology of earth pressure balance shield machine

Abstract

The invention discloses a research and experimental device of a stratum identification technology of a soil pressure balanced shield machine. First and second separator plates are arranged in a soil case, so that different types of soil can be filled into the soil case conveniently, different stratum interfaces can be formed, and convenience is provided for research in the aspect of real-time stratum identification in the soil pressure shield; a cover of the soil case is provided with telescopic hydraulic cylinder and steel plate, so that certain pressure can be acted on the soil in advance, and internal pressure of the soil in the real shielding environment is simulated; and the cover of the soil case is provided with an air inlet pipe, so that high pressure gas can be used to simulate aboundary pressure generated by objects as a ground building or road on the ground during real shielding.

Description

technical field [0001] The invention relates to an experimental device for researching stratum identification technology of an earth pressure balance shield machine, which belongs to the field of earth pressure balance shield machines. Background technique [0002] The earth pressure balance shield machine is a common equipment for soft soil tunnel construction. It has become the mainstream of urban underground engineering construction technology. The shield method construction is a continuous and dynamic process. Before excavating the tunnel with the shield machine, it is necessary to fully understand the excavation Geological information, on the basis of geological data, reasonably set the technological parameters of the shield machine, and if the geological information obtained before tunnel excavation cannot cover the geological conditions of the entire tunnel, it will lead to a "black box" in the strata ahead of construction. ” situation, so that the process parameters ...

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Problems solved by technology

For example, the invention patent with the publication number CN101403306A discloses an earth pressure balance shield simulation experiment system, which uses earth pressure jacks and concrete cushions to simulate the internal pressure of the soil in the actual tunnel construction environment, and the construction on the ground. The boundary pressure generated by objects such as objects or roads on the soil makes the experiment more realistic and reliable, but the above-mentioned technology cannot easily fill the soil box with different types of soil to form the interface of different strata, so that it is not convenient for real-time identification of strata and due to the use of jacks and concrete cushions, displacement sensors cannot be set on the soil surface, so that the system cannot conduct research on ground deformation; in addition, because the concrete layer covers the soil surface, it will Affects the results of surface deformation to a large extent, so that the experimental results are quite different from the actual construction conditions

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