关键词: 隧道工程, 瞬变电磁, 视电阻率, 隧道施工, 渗漏水状态, 预测

Abstract: he conclusion of TEM detection is subjective and biased because it highly depends on the working experience of the operators. In order to improve the accuracy and objectivity of TEM detection, the Xinping tunnel of the Yuxi-Mohan Railway was taken as the research object, which was prone to water flush accident under the scouring of the groundwater. Based on a large number of the TEM advanced water detection tests, the corresponding relationship between the range of apparent resistivity and the leakage state was determined. Meanwhile, an aqueous model with the size of 80 m×40 m×40 m (length×width×height) was established based on the Voxler software. Finally, the prediction method of the leakage state in the tunnel construction based on TEM was proposed and the quantitative prediction of leakage state in tunnel construction was realized. Through the verification of engineering examples, it is basically consistent with the excavation revealed by the site, which can meet the needs of on-site safety production.

Key words: tunnel engineering, TEM, apparent resistivity, tunnel construction, leakage state, prediction