| 青海格尔木-五道梁地区现今地应力测量结果及其构造分析 |
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| 关键词:in-situ stress measurement maximum principal stress action of earthquake regional structural stress field structure analysis |
| 基金项目:国土资源部科技司重点基础项目(编号:20002202) |
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| Current Stress Measurement and Structure Analysis of Golmud-Wudaoliang Region in Qinghai Province |
| This paper deals with the results of stress measurements performed in recent years at different sites in Geermu-Wudaoliang region of Qinghai Province. On such a basis, structure analysis was carried out. The direction of the principal stress is generally northeastward, consistent with that of the regional stress field. Nevertheless, the direction of principal stress affected by local faulting is always different from the direction of regional structural stress field near the fault. Both the value and the direction of stresses tend to change before and after the earthquake. At the sites near the Kunlun fault zone, the stress value is higher before earthquake than after earthquake. The value of stress after earthquake is one-third the value before earthquake.Earthquake is the performance of stress release, and the information of earthquake might be gathered through measuring the stress variation. |
| ZHANG Chun-shan,WU Man-lu,LIAO Chun-ting,MA Yin-sheng,QU Ming-yi.2005.Current Stress Measurement and Structure Analysis of Golmud-Wudaoliang Region in Qinghai Province[J].Acta Geoscientica Sinica,26(2):183-186. |
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