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地震 ›› 2002, Vol. 22 ›› Issue (3): 95-104.

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荷载对钻孔应变测值影响的实验及力学解析

胡卫建1, 张俊山1, 谢智1, 王志敏1, 李安印1, 冯建民2, 刘丽君1   

  1. 1.河南省地震局,河南郑州 450000;
    2.徐州市地震台,江苏徐州 221009
  • 收稿日期:2001-12-03 修回日期:2002-03-25 出版日期:2002-07-31 发布日期:2021-12-21
  • 作者简介:胡卫建(1959-),男,四川遂宁人,1999年获硕士学位,从事地壳钻孔应变、地壳形变、地震前兆等研究。

Experimental result and theoretic analysis concerning the borehole strain responding to the loadonearth's surface

HU Wei-jian1, ZHANG Jun-shan1, XIE Zhi1, WANG Zhi-min1, LI An-yin1, FENG Jian-min2, LIU Li-jun1   

  1. 1. Seismological Bureau of Henan Province, Zhengzhou 450000, China;
    2. Seismic Observational Station of Xuzhou City, Jiangsu Province, Xuzhou 221009, China
  • Received:2001-12-03 Revised:2002-03-25 Online:2002-07-31 Published:2021-12-21

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摘要： 介绍了弦频钻孔应变仪和体积式应变仪二次地表荷载试验的结果。根据弹性力学的理论和方法,对钻孔地壳应变测量及荷载试验的力学模型、边界条件等予以简化,使得经典的集中力作用于半无限弹性体表面的布辛奈斯克(Boussinesq)解,可有条件地运用于钻孔应变测量中地表荷载变化问题的定量分析研究。所给出的实验方法、研究思路及计算方法等,对定量研究钻孔应变测量中的荷载干扰、研究岩石力学性质、制定台站钻孔应变观测技术标准及观测规范等具有一定意义。

关键词: 应力-应变, 荷载, 布辛奈斯克解, 主应变, 杨氏模量

Abstract: In this paper, twoloading experimental results are introduced by using both strong frequency borehole strain meter and volume strain gauge. According to the elastic mechanical theory and method, both mechanical model and boundary condition for strain measurement in borehole loading experiment are simplified. Soclassical focal force acts on Boussinesq' solution on the surface of half-limitless elastic body. It may be applied in the quantitative re searchabout the measure of borehole strain in variety of the loading on the surface. The experimental method, re search thought and calculation method will supply the significanthelp for the quan-titative re search of the load disturbance in the borehole, the mechanical nature of rock,estab-lishing observation technical st and ard and observation criterion and soon.

Key words: Stress and strain, Load, Solution of Boussinesq, Main Strain, Yang modulus

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