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:
Jun. 30, 2026
Filed:
Jun. 25, 2023
Northeastern University, Shenyang City, CN;
Benguo He, Shenyang City, CN;
Xiangrui Meng, Shenyang City, CN;
Xiating Feng, Shenyang City, CN;
Hongpu Li, Shenyang City, CN;
Fei Wang, Shenyang City, CN;
Jie Wang, Shenyang City, CN;
Lei Wang, Shenyang City, CN;
Lei Hu, Shenyang City, CN;
Zhibin Yao, Shenyang City, CN;
Hongyuan Fu, Shenyang City, CN;
NORTHEASTERN UNIVERSITY, Shenyang City, CN;
Abstract
Provided is a method for judging geology of a time-delayed extremely intense rockburst as to deep tunnel engineering. Information about geological structures is recorded according to methods such as geological mapping and advanced geological prediction of the tunnel face. Geometric characteristics of burst craters formed during the rockburst are recorded by utilizing advanced geological drilling and profile scanning technologies in a rockburst-damaged zone. 3D geostress in the rockburst-damaged zone is measured by using a stress relief method or a hydraulic fracturing method to determine the orientation of the maximum principal stress. A 3D numerical calculation model is established based on initial geostress testing results and physical and mechanical parameters of rock and structural discontinuities obtained through on-site geological investigations. By conducting excavation simulations under different combinations of structural discontinuities and performing numerical calculation, the risk of time-delayed extremely intense rockburst disasters at current locations after tunnel excavation is judged.