钻孔应变、应力测量区域特征初探  

A PRELIMINARY STUDY ON REGIO NAL CHARACTERISTICS OF BOREHOLE STRAIN AND STRESS MEASUREMENTS IN CHINA

作　　者：赵淑平[1] 

机构地区：[1]山东省地震局,济南250021

出　　处：《地震研究》1992年第3期283-290,共8页Journal of Seismological Research

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。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.

关 键 词：测震 钻孔 应变 应力 测量 

分 类 号：P315.7[天文地球—地震学]