Applications of anelastic strain measurements in scientific ocean deep drillings

摘要：

To determine three-dimensional stress orientation, we carried anelastic strain recovery (ASR) measurements out using drill core samples taken from a scientific ocean deep drilling project. The lithology of the core samples is mudstone or siltstone with larger porosities ranged from 35％ to 45％. We glued strain gauges on their cylindrical surface, and successfully obtained high quality anelastic strain data in at least six directions. And then, we determined the three-dimensional stress orientations by the strain-time curves. The stress orientations obtained from the ASR core measurements were consistent with those from drilling induced borehole breakouts and tensile fractures observed in electrical image of borehole logging.

作者: Weiren Lin Timothy B. Byrne Akito Tsutsumi Yuhji Yamamoto Arito Sakaguchi Yuzuru Yamamoto Chandong Chang

作者单位: Japan Agency for Marine-Earth Science and Technology, Kochi, Japan University of Connecticut, Storrs, USA Kyoto University, Kyoto, Japan Kochi University, Kochi, Japan Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan Chungnam National University, Daejeon, Korea

会议类型: 国际会议

会议名称: The Fifth International Symposium on In-situ Rock Stress(第五届国际岩石应力研讨会)

会议地点: 北京

会议语种:英文

页码: 199-204

在线出版日期: 2010-08-25（万方平台首次上网日期，不代表论文的发表时间）