Risk Assessment of Ground Fissures Based on AHP and Information Method

Abstract:

The North China Plain is an area suffering from serious ground fissures, to which major linear projects are most sensitive. Multiple factors contribute to the formation of ground fissures in piedmont plains. Based on the ArcGIS platform, five main influence factors——active tectonic, geomorphic lithology, underground water level, thickness of the quaternary, and present situation of ground fissure distribution, are selected to conduct the ground fissure risk assessment for Jing-Shi High-speed Rail and the Jing-Shi section along the South-to-North Water Transfer Line with the AHP-information model. The results show that this method can provide proper fissure risk assessment, and be applicable in similar cases.