Chinese Academy of Sciences

Xingli Li

Sheng Wang

Min Chen

Liyun Yang

Jun Gao

Xiao Lin

Dexing Wu

Yu Tang

Xiaobo Xie

Shanxiong Chen

Dean Liu

Wenguo Yang

Xuejun Peng

Lingfa Jiang

Hongming Luo

Xiaozhen Xiang

A safe early warning method and device for full-section tunneling of a tunnel featuring dynamic water and weak surrounding rock, comprising establishing a dynamic coordinate system with an origin thereof moving along a tunnel excavation line, recording the moving distance of the origin, conducting three-dimensional laser scanning with the origin as a center to obtain point cloud data including coordinate data, collecting surrounding rock data; conducting deformation fitting on the point cloud data, calculating a fitting residual error, removing a noisy point, and conducting preprocessing; combining data of preprocessed point cloud, surrounding rock, and the tunnel excavation line to construct a tunnel excavation dynamic model; conducting stress analysis according to the model and determining whether to send out a safety early warning signal. The device comprises a three-dimensional laser scanner, a geological radar device, a displacement module, an industrial computer, a data transmission module, an alarm, and a server.

Safety early warning method and device for full-section tunneling of tunnel featuring dynamic water and weak surrounding rock

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Wuhan, China

Xingli Li