Focusing sounding type three-dimensional induced polarization advanced detection system and method loaded on TBM

Abstract

The invention discloses a focusing sounding type three-dimensional induced polarization advanced detection system and method loaded on a TBM. The advanced detection system comprises an electrode system, an electrode telescoping device, a multi-path rotation device, a cable system and an induced polarization detection instrument; the electrode system is arranged on a TBM cutterhead, a shield, a trolley and a tunnel side wall, wherein electrodes on the cutterhead, the shield and the trolley are loaded on the TBM through the electrode telescoping device; and the induced polarization detection instrument controls the electrode telescoping device to realize automatic telescoping control over the electrodes, telescopic state detection and contact state detection, and the multi-path rotation device is adopted to realize uninterrupted rotation of measurement signals, hydraulic oil paths and cutterhead water paths and realize load integration of the induced polarization detection system and theTBM. The system and the method have the advantages that the problem of induced polarization advanced detection of a source of water and mud inrush disaster of a TBM construction tunnel can be solved,the automation degree of measurement is high, the safety, the rapidness and the reliability are achieved, three-dimensional inversion imaging can be carried out on a water-contained body in the frontof a tunnel face, and therefore the safe and efficient construction requirements of the TBM construction tunnel are met.

Description

technical field [0001] The invention relates to the field of focused sounding type three-dimensional induced polarization advanced forecasting for TBM construction tunnels, in particular to a focused sounding type three-dimensional induced polarization detection system and method carried by a TBM. Background technique [0002] In the tunnel construction process, the TBM construction method has the advantages of fast excavation speed, safety and civilization, and high comprehensive economic benefits, and is increasingly used; however, TBM has poor adaptability to the stratum. Unfavorable geological conditions such as karst water bodies, weak strata, and underground rivers often induce serious disasters such as landslides, water and mud inrush, and large deformations, resulting in abnormal wear of TBM cutters and damage to cutterheads, affecting tunneling efficiency and construction progress, and may even occur Disastrous consequences such as aircraft crashes, human deaths, an...

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Problems solved by technology

[0005] (1) The TBM construction environment is complex and the electromagnetic interference is serious. Designing a focused bathymetric observation mode is the primary problem, which can not only suppress the interference of TBM machinery, but also increase the detection distance

[0006] (2) The TBM cutter head occupies the face space, and the rock debris and water in front of the cutter head can easily damage the electrodes. The layout and protection of the electrodes on the face face is a key problem. It is urgent to develop a device with automatic detection of electrode status , Automatic retractable electrode system of electrode protection device

[0007] (3) The construction speed of TBM is fast, and the efficiency of laying power supply electrodes by drilling holes on the side wall is low, which seriously affects the TBM construction process. It is urgent to develop a non-drilling fast installation and fixing device for power supply electrodes

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