The authors adopted TSP, ground penetrating radar and infrared acquisition technology to tunnel advance prediction of Thousand-island Lake water distribution project. Several conclusions have been drawn as follows: Firstly, TSP has a low resolution for detecting karst caves but has a good effect for detecting fractured rock mass, its anomaly features show that the Young’s modulus, density and P-wave velocity are low. Secondly, ground penetrating radar is very suitable for tunnel prediction in limestone area, radar reflection profile exhibiting strong amplitude and hyperbolic event usually indicates the development of karst caves. Thirdly, infrared acquisition is greatly influenced by hydration heat of shotcrete in tunnel so that it cannot be used alone in tunnel geological prediction; the defect is especially obvious when the quality of surrounding rock is poor.
Zhang Y, Yang J, Zhou L M , et al. Common interference and the prediction of rock fissure water and weak interlayer in tunnel construction using TSP[J]. Progress in Geophysics, 2018,33(2):892-899.
Chen L B, Liu Q S, Zhang G H , et al. Prediction of inrush disaster in non-soluble rock tunnel and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering, 2014,33(4):786-796.
Liu Z Y, Wang Y L, Yang W . Relative coordinate measuring system applied in the geological advanced prediction with tunnel reflection tomography[J]. Modern Tunnelling Technology, 2018,55(2):146-151.
Zhao G J, Li J J, Jiang Z G , et al. Application of AGI-T3 to advance geological prediction for construction of water conveyance tunnel[J]. Water Resources and Hydropower Engineering, 2018,49(6):164-170.
[6]
Kaus A, Boening W . Beam-geoelectrical ahead monitoring for TBM-drives[J]. Geomechanics and Tunneling, 2008,1(5):442-450.
LI S C, Liu B, Sun H F , et al. State of art and trends of advanced geological prediction in tunnel construction[J]. Chinese Journal of Rock Mechanics and Engineering, 2014,33(6):1090-1113.
Han J G, Chen Q, Zeng Y Q , et al. Application of mine transient electromagnetic method to advanced prediction of a gold mine[J]. Geology and Exploration, 2018,54(2):344-347.
Li J J, Zhu H L, Zhao G J , et al. Electromagnetic interference analysis of ground penetrating radar and its application in karst detection in tunnel[J]. Carsologica Sinica, 2018,37(2):286-293.
Wang H Y, Zhang J K, Li Z H . The theory and case analysis for prediction of water-bearing bodies in over-length and over-size tunnel using infrared ray method[J]. Computing Techniques for Geophysical and Geochemical Exploration, 2003,25(1):11-17.
[12]
Irving J, Knight R . Numerical modeling of ground-penetrating radar in 2-D using MATLAB[J]. Computers & Geosciences, 2006,32(9):1247-1258.