| 钻孔应变,应力测量区域特征初探 |
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| 引用本文： | 赵淑平.钻孔应变,应力测量区域特征初探[J].地震研究,1992,15(3):283-290. |
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| 作者姓名： | 赵淑平 |
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| 作者单位： | 山东省地震局 济南 |
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| 摘 要： | 我国钻孔应变、应力测量依不同时段区域变化形态有明显差异;短期(一月内)、中期(一年内)区域变化特征不显著。正常形态显示平稳、应变测量显示固体潮形态、应力测量显示年变形态。震前异常多呈现突升、突降式的应变阶跃、固体潮畸变、年变形态改变。长期(10年内)与其构造部位、地震活动性及区域构造运动,矢量速率有一定的相关性,因而存在着明显的区域变化特征。识别不同区域的曲线变化特征,对判定震兆信息有一定的指导作用,从而提高了应变、应力测量资料的应用价值。
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| 关 键 词： | 测震 钻孔 应变 应力 测量 |
A PRELIMINARY STUDY ON REGIO NAL CHARACTERISTICS OF BOREHOLE STRAIN AND STRESS MEASUREMENTS IN CHINA |
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| Zhao Shuping.A PRELIMINARY STUDY ON REGIO NAL CHARACTERISTICS OF BOREHOLE STRAIN AND STRESS MEASUREMENTS IN CHINA[J].Journal of Seismological Research,1992,15(3):283-290. |
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| Authors: | Zhao Shuping |
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| Abstract: | The regional variation states of borehole strain and stress measurements in China show obvious discrepancies in light of different time spans.The short-term .(within a month) and intermediate-term (within a year) variations are not conspicuous. The normal variation state is stable, in which the strain measurement displays the earth tides and stress measurement displays a yearly variation. Anomalies before events are mainly shown as the strain jump of abrupt rise and fall, distortion of earth tide and change of yearly state. The long-term (within 10 years) variation shows a certain correlation with its structural location, earthquake activity, regional structural motion and vector rate. Therefore, there exists an obvious regional characteristic. It has a certain guiding function to judge the seismogenec information by recognizing the variation curves of different regions. In this way, the application value of strain and stress data has been risen. |
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| Keywords: | Borehole strain and stress measurements Regional characteristics China |
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