Tunneling using a TBM encounters many technical challenges during its process,including complex geology,very small diameter,very small turning radius,steep gradient,and long tunnel,causing frequent machine jamming and water and mud gushing.To mitigate major risks in small-radius TBM tunnel construction,a comprehensive advanced geological prediction technology is proposed.This technology combines a dual-source system and an IP dipole 3D system for TBM tunnels.To exemplify this approach,the gravity drainage tunnel project at the Tongcheng Pumped Storage Power Station in Anhui Province serves as an example.Prediction equipment was installed on the TBM with a small diameter,allowing the real-time prediction of geological conditions ahead of the working face.This was achieved through intelligent graph identification,full-space multi-field information fusion,deep learning,and inversion imaging.The application effectively addresses the advanced geological investigation challenges encountered in small-diameter TBM tunnels,providing a reference for efficient TBM tunneling of similar projects.
关键词
开敞式小直径/TBM/地震波法/电法/隧洞综合超前地质预报
Key words
open small-diameter/TBM/seismic wave method/electrical method/comprehensive advance geological prediction of tunnel
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