Advanced prediction method of unfavorable geology of tunnel construction
A technology of advanced geological prediction and tunnel construction, which is applied in seismology, geophysical measurement, seismic signal receiver, etc., can solve the problems of inaccurate prediction of tunnel geological conditions and single survey method, and achieve accurate and reliable results with different methods Re-simplification, the effect of improving safety
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[0028] An embodiment, a method for advanced prediction of poor geological conditions in tunnel construction, comprising the following steps:
[0029] Step 1: Use the geological survey method to survey the surrounding environment of the excavated tunnel and conduct a geological sketch.
[0030] The geological sketch includes the prediction of the lithology and rock position of the rock formation, the prediction of the length of the tunnel affected by the banded unfavorable geological body, and the prediction of the length of the tunnel affected by the unfavorable geological body. Specifically, the geological sketch of the rock formation is carried out on the excavation face, and the production and thickness of the rock formation are measured. Observing and obtaining the mineral composition and content of rocks, structural features, special marks, stable state of the front and side of the excavation face, rock formation, lithological weathering degree, joint fissure development d...
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