| 腾冲科学钻探孔非弹性应变恢复法三维地应力测量 |
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| 关键词:In-situ stress measurement anelastic strain recovery scientific drilling well in Tengchong focal mechanism solutions |
| 基金项目:国家深部探测技术与实验研究专项(编号: Sinoprobe-05-07); 国家自然科学基金项目(编号: 41404080) |
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| Determination of Three-dimensional in Situ Stresses by Anelastic Strain Recovery in Tengchung Scientific Drilling Hole |
| Three-dimensional in-situ stress is measured by anelastic strain recovery method (ASR) in Scientific Drilling well in Tengchong of Yunnan province. ASR method is an economic and practical new method, which is developed for three-dimensional in-situ stress measurement at great depth in recent years. In-situ stress state is obtained in depth from 720 m to 1098 m by ASR method. The results of measurement show that the maximum and intermediate principal stress is nearly horizontal, and the minimum principal stress is nearly vertical. The direction of the maximum horizontal stress is from 30° to 45°. Measurement results by ASR are compared with the focal mechanism solution. Comparison shows that the results by ASR are in good agreement with focal mechanism solutions. The stress state is conducive to strike slip movement for high-angle faults and to thrust movement for low-angle faults. This stress state is consistent with activity nature of earthquake faulting in Tengchong area. The results are meaningful for study in earthquake mechanism in Tengchong area. |
| WANG Lian-jie,CUI Jun-wen,SUN Dong-sheng,ZHAO Wei-hua,QIAN Hua-shan.2016.Determination of Three-dimensional in Situ Stresses by Anelastic Strain Recovery in Tengchung Scientific Drilling Hole[J].Acta Geoscientica Sinica,37(1):111-115. |
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