Quantitative Zoning Assessment of Crustal Stability Along the Yunnan-Tibet Railway Line,Western China

作     者：ZHANG Yongshuang YAO Xin HU Daogong GUO Changbao XIONG Tanyu 

作者机构：Key Laboratory of Neotectonic Movement and GeohazardMinistry of Land and Resources Institute of GeomechanicsChinese Academy of Geological Sciences 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2012年第86卷第4期

页      面：1004-1012页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 08[工学] 0708[理学-地球物理学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported by the Special Project of Basic Work of Science and Technology(grant No. 2011FY110100) the Geological Survey of the Ministry of Land and Resources(grant No.1212010541404) the Project of the 12th Five-year National Sci-Tech Support Plan(grant No.2011BAK12B09) 

主　　题：railway engineering geo-hazard active fault crustal stability influence factor zoning assessment Yunnan province Tibet 

摘      要：The planned Yunnan-Tibet railway goes through the northwest of Yunnan Province and the southeast of the Tibet Autonomous Region. Because of its location near the collision belt of the Eurasian and Indian plates, complex engineering geological conditions and difficult engineering geological problems are encountered. The study is aimed at making the zoning assessment of crustal stability along the railway line so as to provide a better base for its construction, especially its line selection. For this purpose, the following seven influencing factors of crustal stability were selected and quantified by grading and scoring： active fault, seismic activity, geo-stress field, geo-strain field, geothermal field, geo-hazard, and lithologic character. Of these factors, the active fault, seismic activity and geo-hazard are the three most prominent factors influencing the railway construction. Along the railway line there are 1731703 calculation units to be divided. The zoning assessment calculation was completed by ArcGIS-based information fusion method. The assessment results aid railway line selection and show that there are 10 stable sectors, 28 relatively stable sectors, 23 relatively unstable sectors, and 20 unstable sectors along the Yunnan-Tibet railway line.