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本文应用中国大陆“十五”数字化观测网络实施的分量式钻孔应变观测资料,介绍了观测站的基本情况,分析了固体潮观测精度.利用固体潮理论反演剪应变观测数据的潮汐响应参数,获得了剪应变耦合系数和相位滞后参数,反演结果显示出现系统偏离的相位滞后最大可达10小时左右,而耦合系数总体偏小;并结合构造对有关剪应变系统偏离的机制进行了讨论.利用有限元数值模拟方法,通过采用均匀介质以及不同走向断层的模型设置,对剪应变理论值和观测值进行了模拟,进一步分析剪应变方向与断层走向的关系,数值模拟结果显示,当剪应变方向接近与断层走向平行时,相位滞后偏离较大,相位滞后最大可偏离11.5小时左右,而耦合系数相对较小,与反演结果基本吻合.本文最后对介质各向异性与构造的关系等有关问题进行了讨论.
In this paper, we use the data of component borehole strain observation conducted by digital observation network in Mainland China to introduce the basic situation of observation station and analyze the observation accuracy of solid tide, and use the tide theory to predict tidal strain Response parameters, the shear strain and phase lag parameters are obtained. The inversion results show that the phase lag of the system deviation is up to 10 hours and the coupling coefficient is generally small. The mechanism of the deviation of the shear strain system is combined with the structure The theoretical and experimental values of shear strain are simulated by the finite element numerical simulation method and the model settings of uniform medium and different strike faults are used to further analyze the relationship between the direction of shear strain and the strike of the fault.The numerical simulation results show that, When the direction of shear strain is close to that of the fault, the phase lag deviates greatly, and the maximum phase lag can deviate 11.5 hours and the coupling coefficient is relatively small, which agrees well with the inversion results.Finally, Relations and other related issues were discussed.