In-Situ Stress Measurement by Differential Strain Analysis Method in WFSD-1
详细信息
- 责任者：Peng Hua (Key Lab. of Neotectonic Movement and Geohazards ; Ministry of Land and Resources ; Institute of Geomechanics ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Ma Xiumin
- 刊名：Journal of Geomechanics
- 出版年：2011
- 卷期：17(3)
- 关键词：地应力测量 ; geostress surveys ; 断裂带 ; fracture zones ; 四川 ; Sichuan Province
- 页码：p.249-261
- 图表：5 illus., 2 tables, 11 refs.
- 分类号：0300
- issnNo：ISSN1006-6616
- isbnNo：CN11-3672/P
摘要
Core differential strain analysis method is one of the primary means of in-situ stress measurement in WFSD. This paper describes the principle and data processing method of in-situ stress measurement by differential strain analysis（DSA） in WFSD-1.And the stress profile is established with depth in the hole. Test results show that the stress states of the upper and lower plate in the Yingxiu-Beichuan fault are significant differences. Regional in-situ stress not only increases with depth, but also concerns with the geological structure, rock physical properties and other factors.