Non-contact frequency domain electrical method real-time advanced detection system and method for shield carrying

Abstract

The invention discloses a non-contact frequency domain electrical method real-time advanced detection system and method for shield carrying. Non-contact electrodes are installed on a cutterhead of a shield machine, currents are emitted and received by means of capacitance coupling, the non-contact electrodes are connected to a host through a plurality of paths of swivel joints, measurement data is inverted and explained in real time, a prediction result is transmitted to a shield machine control system, and technical support is provided for safe construction of the shield machine. According to the invention, the Non-contact electrodes are installed on the shield machine cutterhead, the problem of difficult coupling of conventional contact electrodes is avoided; the real-time advanced detection of the geology in front of a tunnel face is realized in a shield driving process without the downtime of the shield machine, the rapid requirement of shield construction is met, and the efficiency of advanced geology detection of the shield machine is substantially improved; the electrodes are only installed on the cutterhead, the interference of back metal objects is effectively avoided, the forward advanced detection capability is improved, and more important, the problem that the spaces of the cutterhead and the tunnel face are very narrow is solved.

Description

technical field [0001] The invention relates to a non-contact frequency-domain electrical method real-time advanced detection system and method carried by a shield. Background technique [0002] At present, more than 40 countries in the world have opened urban subway lines, and all developed countries have highly developed urban subway facilities. Subway has taken on the main task of passenger transport in many urban traffic, and the life of residents in cities such as Moscow, New York, and Beijing cannot do without the subway. Due to the advantages and convenience of rail transit, more and more countries and cities have begun to develop their own rail transit. With the rapid development of rail transit worldwide, more and more tunnel projects will be built in the field of rail transit in various countries. Compared with traditional tunnel construction methods such as open-cut method and shallow-buried underground method, the shield construction method has the advantages o...

AI Technical Summary

Problems solved by technology

The electrodes and propulsion devices exposed in front of the cutter head are easily affected by the tunneling construction and are easily damaged. It is difficult to contact the electrodes when the cutter head rotates. Therefore, how to use non-contact electrodes to achieve real-time advanced detection in the cutter head rotation mode is an important issue.

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