Real-time early warning system and method for shield surrounding rock collapse disaster during tbm excavation

Abstract

The disclosure provides a real-time early warning system and method for shield surrounding rock collapse disasters during TBM excavation, including a processor and a plurality of pressure sensing elements connected to the processor and arranged on the TBM shield; The real-time data of each pressure sensing element is interpolated to obtain the current TBM shield pressure distribution model, and the TBM shield pressure concentration area is determined through the distribution model, and the collapse disaster risk is defined as the surrounding rock area corresponding to the pressure concentration area area; this disclosure evenly arranges pressure sensing elements on the shield body, performs interpolation processing on the pressure data collected in real time, and then obtains the pressure model of the shield body, and obtains the concentrated pressure area through the model, and then realizes the protection of the shield body. Accurate judgment and early warning of surrounding rock collapse greatly improve the safety during TBM excavation.

Description

technical field [0001] The present disclosure relates to the technical field of TBM safety early warning, in particular to a real-time early warning system and method for shield surrounding rock collapse disasters during TBM excavation. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the development of underground engineering, tunneling equipment represented by shield machines and TBMs has further promoted the development of underground engineering construction. [0004] However, the inventors of the present disclosure found that karst or sedimentary rocks are often encountered during construction, and the terrain, landform and geological conditions are complex, and underground engineering construction faces huge technical challenges, especially in the process of TBM excavation, the surrounding rock of the shield body has no support...

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Problems solved by technology

[0004] However, the inventors of the present disclosure found that karst or sedimentary rocks are often encountered during construction, and the terrain, landform and geological conditions are complex, and underground engineering construction faces huge technical challenges, especially in the process of TBM excavation, the surrounding rock of the shield body has no support and reinforcement It is very easy to have engineering problems such as machine jamming and surrounding rock collapse, which will further cause major economic losses such as delays in the construction period and equipment damage; some researchers have installed three pressure sensors on the front shield, middle shield and tail shield of the shield body respectively. Although this method can also realize the real-time monitoring of the shield body under pressure, it cannot realize the early warning of the collapse of the surrounding rock of the shield body; and if the pressure sensors are densely arranged on the shield body, the cost is high and the practicability is low

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