Analysis and Characteristics of Faults around Danjiangkou Reservoir, West Hubei Province
Lin Song
Tang Qijia
Li Yuan
Luo Denggui
Liao Wulin
Wang Qiuliang
Abstract：West Hubei Province is located at an important point of the continental structure in China with complex geological structure,of which the Danjiangkou reservoir area is the core area of the South-to-North Water Diversion (SNWD) Project of China.An investigation of fault structure is important for the construction of seismic safety system of the SDWN Project.In this study,a shallow seismic-reflection technology to analyze 0 to 300 m structures of Danjian,Liangyun and Baihe-Gucheng fault zones around the Danjiangkou reservoir is used.The results show that most of fault,striking in the three fault zones are roughly in NE direction.Normal faults largely exist in the Danjiangkou and the Baihe-Gucheng fault zones.In contrast,Liangyun fault zone mainly consists of reverse faults.This fault distribution may be associated with the local stress imposed by the Danjiangkou reservoir.The results not only reveal fault characteristics of the Danjiangkou region but also provide important information of relationship between the background stress in this area and its surrounding tectonic unit for the future studies in seismology.
Keywords：Danjiangkoufault structureDanjiang faultLiangyun faultBaihe-Gucheng faultearthquakeengineering geology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 1830-1841 )