Abstract In order to reduce the influence of geological prediction on construction procedure and realize efficient geological prediction for TBM tunnels, this paper analyzes the key points and difficulties of geological prediction in TBM tunnel considering the construction environment, introduces the principles and detection scheme of HSP method which is suitable for the TBM tunnels. The HSP method can directly use seismic waves excited by TBM cutters as source signal and obtain stratigraphic characteristic parameters by adopting the technologies of multichannel, longtime, sequence receiving,correlation interference and focusing imaging during data acquisition, realizing geological prediction in front of tunnel working face. The HSP method is applied to a double shield TBM tunnel and the prediction results are in good agreement with the actual geological conditions of the surrounding rocks, it shows the HSP method is one of the efficient geological prediction methods suitable for TBM tunnels.
Abstract：
In order to reduce the influence of geological prediction on construction procedure and realize efficient geological prediction for TBM tunnels, this paper analyzes the key points and difficulties of geological prediction in TBM tunnel considering the construction environment, introduces the principles and detection scheme of HSP method which is suitable for the TBM tunnels. The HSP method can directly use seismic waves excited by TBM cutters as source signal and obtain stratigraphic characteristic parameters by adopting the technologies of multichannel, longtime, sequence receiving,correlation interference and focusing imaging during data acquisition, realizing geological prediction in front of tunnel working face. The HSP method is applied to a double shield TBM tunnel and the prediction results are in good agreement with the actual geological conditions of the surrounding rocks, it shows the HSP method is one of the efficient geological prediction methods suitable for TBM tunnels.
LU Song1,
2 WANG Xu1,
2 LI Cangsong1 etc
.Study on Geological Prediction Technology of HSP Method for TBM Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(3): 30-35
2020, Vol. 57 