Real-time early warning system and method for shield surrounding rock collapse disasters in TBM tunneling process

Abstract

The invention provides a real-time early warning system and method for shield surrounding rock collapse disasters in a TBM tunneling process. The real-time early warning system comprises a processor and a plurality of pressure sensing elements connected with the processor and arranged on a TBM shield body, and the processor interpolates the acquired data according to the acquired real-time data ofthe pressure sensing elements to obtain a current TBM shield body pressure distribution model, determines a TBM shield body pressure concentration area through the distribution model, and takes a surrounding rock area corresponding to the pressure concentration area as a collapse disaster risk area. According to the system, the pressure sensing elements are evenly arranged on the shield body, interpolation processing is conducted on the pressure data collected in real time, then the pressure model of the shield body is obtained, the pressure concentration area is obtained through the model, then accurate judgment and early warning of collapse of surrounding rock of the shield body are achieved, and the safety in the TBM tunneling process is greatly improved.

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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