Shield tunneling formation loss simulation device and method for multi-compartment separated water capsule drainage

Abstract

The invention relates to a shield tunneling formation loss simulation device and method for multi-compartment separated water capsule drainage. The device includes a model test soil box with an opening at the upper end, a horizontal model shield is arranged in the model test soil box, and the model test soil box outside the model shield is filled with formation soil; water capsules are arranged onthe outer wall of the model shield circumferentially in the longitudinal direction, and the water capsules are separated into a plurality of relatively independent compartments in the circumferentialdirection; and each water capsule compartment is provided with an independent drainage hose, one ends of the drainage hoses are connected to the water capsule compartments, the other ends of the drainage hoses are connected to measuring cups outside the model test soil box after penetrating through reserved holes of the model test soil box, and the formation loss is realized by controlling the displacement of the water capsules. The shield tunneling formation loss simulation device and method for multi-compartment separated water capsule drainage has the advantages of simple experimental device, diverse functions, low cost and simple and convenient process, provides a new idea and test method for studying the formation loss mechanism and displacement law of shield tunneling under variousworking conditions, and provides technical support for ensuring the safety of shield tunneling construction and the surrounding environment.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to a shield excavation stratum loss simulation device and method for multi-compartment water bag drainage. Background technique [0002] With the rapid development of the economy, in order to guide the rational layout and orderly development of the city, make full use of underground resources to provide a broad extension space for urban development, in recent years, the underground space has gradually developed in the direction of large buried depth and large space. The continuous emergence of short-distance crossing projects has restricted the development and utilization of urban underground space to a certain extent. With the continuous development of shield technology, a major factor restricting the overall development of technology is the formation loss and countermeasures of shield tunneling. In some working conditions, it even becomes a controlling...

AI Technical Summary

Problems solved by technology

In some working conditions, it even becomes a controlling factor that restricts the shield tunneling method and the development of underground space, and even makes it impossible to implement the underground space

[0003] Whether the ground loss mechanism and displacement control measures of shield excavation are reasonable is directly related to the safety of the project itself and the surrounding environment, as well as the cost of the project. If the ground loss and deformation measures are not in place, it will cause huge safety hazards and investment waste

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