The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2023
Filed:
Sep. 17, 2021
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, CN;
Hongming Luo, Wuhan, CN;
Jun Gao, Wuhan, CN;
Shanxiong Chen, Wuhan, CN;
Xiao Lin, Wuhan, CN;
Lingfa Jiang, Wuhan, CN;
Liyun Yang, Wuhan, CN;
Min Chen, Wuhan, CN;
Yu Tang, Wuhan, CN;
Dean Liu, Wuhan, CN;
Sheng Wang, Wuhan, CN;
Xuejun Peng, Wuhan, CN;
Wenguo Yang, Wuhan, CN;
Xiaobo Xie, Wuhan, CN;
Xingli Li, Wuhan, CN;
Dexing Wu, Wuhan, CN;
Xiaozhen Xiang, Wuhan, CN;
Abstract
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.