Detection Data Characteristics and Recognition of Tunnel Fissure Water

作     者：Li, Chuan Wang, Shiyi Wang, Yunsheng Zhang, Panpan Yang, Xi Wan, Xiaorong 

作者机构：Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming650500 China Yunnan Key Laboratory of Computer Technologies Application Kunming650500 China Yunnan Aerospace Engineering Geophysical Detecting co.ltd Yunnan Kunming650500 China 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Ground penetrating radar systems 

摘      要：Tunnel fissure water may induce geological disasters of mud bursting and collapse during the construction stage. Therefore, it is important to automatically extract and identify fissure water in front of the tunnel face for tunnel construction. The paper performs diffraction migration imaging of seismic data after P/S wave separation, and the imaging results reflect the three-dimensional distribution of undesirable geologic bodies. Second, based on the geologic bodies obtained above, ground-penetrating radar detection is added to identify alternative area of fissure water at the peak point of the A-scan. The boundary point of the alternative area of fissure water is located at the peak point where the phase of the reflected wave and the incident wave are reversed. Finally, the area with a larger amplitude and smaller frequency than the surrounding rock is screened as the target area among the alternative area, and the distribution of fissure water is labeled in the B-scan. The method is applied to the mileage section K38+440$\sim$+320 of Liangwangshan Tunnel in Yunnan, and the forecast results show that the rock bodies near the mileage section K38+440$\sim$+410, K38+410$\sim$+380, and K38+350$\sim$+320 is more fragmented, the fissure water is developed, and the target area is verified by excavation. © 2023, The Authors. All rights reserved.