We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
基于天-空-车-地一体化铁路路基灾害隐患 早期识别与服役状态监测.
- Authors
李永威; 徐林荣; 陈昀灏; 邓志兴
- Abstract
Objectives: Because of high frequency of extreme weather, railway subgrade disaster shows a trend of increasing, great harmfulness and is hard to detect in advance. Even a small-size subgrade disaster may cause railway paralysis, which prevents the development of transportation. Many incidents illustrate that the earliest subgrade disaster always appeared in areas where no case ever reported before. It means that traditional monitoring methods are hard to detect hidden danger area. Thus, a promising method is ur1,2,3gent to be proposed for meeting the monitoring requirement for railway safety. Methods: First, the charac1,2,3teristics of subgrade disaster are summarized under different disaster-pregnant environments, and the advan1,2,3tages of various monitoring methods are discussed to find a collaborative applications method for early iden1,2,3tification of subgrade disaster. The potential hazards that may cause damage to subgrade structure and the deterioration degree of subgrade are considered as the main monitoring object of subgrade service status, in1,2,3cluding subgrade deformation monitoring, structural health monitoring, geological hazard monitoring along the railway, track irregularity, and external environmental monitoring. Second, an investigative approach based on the integration of space-air-train-ground muti-source techniques is proposed to detect the geohazards and monitor the service status of railway subgrade. It means that collaborative application of different moni1,2,3toring methods, cooperative analysis of different scales and resolutions data and collaboration of between various railway departments are required. Two monitoring schemes for subgrade disasters and service sta1,2,3tus of subgrade are proposed based on the integration of multi-source and multi-scale monitoring technique. Finally, the development direction of subgrade service status monitoring is discussed. Results and Conclusions: This monitoring system has been applied in the identification of subgrade service status in the Shang1,2,3hai-Nanjing high speed railway, which can quickly investigate the location of the disasters and the deteriora1,2,3tion degree of subgrade
- Subjects
HIGH speed trains; STRUCTURAL health monitoring; RAILROAD safety measures; EXTREME weather; RAILROAD accidents
- Publication
Geomatics & Information Science of Wuhan University, 2024, Vol 49, Issue 8, p1392
- ISSN
1671-8860
- Publication type
Article
- DOI
10.13203/j.whugis20230404