An Advanced Geological Detection System for Tunnel Construction
A technology for tunnel construction and geological detection, which is applied in the field of advanced geological detection systems and can solve problems affecting detection results, complex electromagnetic environment, and electromagnetic interference
Inactive Publication Date: 2020-05-29
ANHUI TESTING CENT FOR HIGHWAY ENG
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Problems solved by technology
In the prior art, when the excitation polarization method is used for advanced detection, the power supply positive electrode is usually set on the tunneling machine, the measurement electrode is set on the side wall of the tunnel, and the power supply negative electrode is set at infinity behind the tunnel. The excitation current is from The front of the power supply positive electrode flows to the power supply negative electrode. Due to the extremely complex electromagnetic environment of the excavation machine itself, it will generate electromagnetic interference and affect the detection results; at the same time, as the excavation machine advances, the distance between the measurement electrode and the power supply electrode changes. The resulting changes in resistivity and polarizability will interfere with changes in resistivity and polarizability due to changes in the geological environment
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[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Furthermore, it should be understood that the features of the various embodiments described herein are not mutually exclusive and can exist in various combinations and permutations.
[0019] The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.
[0020] see figure 1 , the advanced geological detection system for tunnel construction in the embodiment of the present invention is used in the tunnel construction process to predict the geolog...
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An advanced geological detection system for tunnel construction comprises: a power supply positive electrode, which is disposed on a TBM construction machine; a detection electrode, which is disposedon a first movement channel and capable of advancing along the moving channel in the tunneling direction; a negative electrode, which is disposed on a second movement channel and capable of advancingalong the second moving channel in the tunneling direction; a data acquisition module, which is used for collecting signals of the detection electrode; a communication module, which is used for sending a collected data signal to a data processing host; and the data processing host which determines the geological condition in front of the tunnel construction according to the data signal transmittedby the communication module. The system can predict and identify the water-conducting structure including the fault fracture zone and the karst cave in front of the tunnel face in advance, and ensurethe safety of tunnel construction.
Description
technical field [0001] The invention relates to a geological detection system, in particular to an advanced geological detection system for detecting water content ahead during tunnel construction. Background technique [0002] With the rapid development of domestic highways, railways, water conservancy, mines and other engineering constructions, a large number of tunnel projects have also appeared. Before the tunnel construction, due to the complex terrain, large tunnel burial depth, and limited surface survey technology, it was not possible to find out all the unfavorable geological conditions along the line during the geological survey stage, and the advanced forecast method during the construction period failed to make effective forecasts for water-bearing structures. During tunnel construction, natural disasters such as landslides and water gushing often occur due to geological problems. Therefore, it is an urgent need to ensure the safety of tunnel construction, and i...
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IPC IPC(8): G01V3/08
CPCG01V3/08Y02A90/30
Inventor 林光琴
Owner ANHUI TESTING CENT FOR HIGHWAY ENG