CALCULATION MODEL OF TIDAL FACTOR OBSERVATION BY BOREHOLE BODY STRAIN
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摘要: 首先从理论上推导了钻孔体应变观测井孔耦合系数计算公式,进而根据开尔文潮汐理论建立钻孔体应变观测潮汐因子计算模型,详细研究潮汐因子(δ)变化特征与岩石弹性参数(E3、V3)的关系,指出δ与E3、V3呈非线性关系,δ随后者增大而增大,当E3<5×1010Pa时,对δ影响显著,反之则影响减弱,并和实际观测资料进行了对比分析。Abstract: First, this paper has deduced theoretically calculation formula of coupling coefficient of observational well-hole of borehole body strain, and according to Kelvin tidal theory set up the calculation model of tidal factor observation by borehole body strain. It has studied the relation between the change characteristics of tidal factors (δ) and elastic coefficient of rocks (E3, υ3), and indicated the nonliner relation of δ with E3 and υ3. The bigger E3 and υ3 are, the bigger δ is. When E35 ×1010pa, δ is influenced obviously. Conversely it is influenced weakly. And δ is compared and analysised with real observational data.
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Key words:
- body strain /
- coupling of well-hole /
- tidal factor
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3 郗钦文,杨林章,黎凯武.地球对引潮力的响应及综合分析.中国地震, 1994,10 (增刊). -

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