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推导并建立了块体的两种弹性运动方程 :块体的整体旋转与均匀应变方程和块体的整体旋转与线性应变方程 .应用统计学原理 ,使用西域、青藏和华北块体上的GPS站速度数据 ,对这两种弹性运动方程与刚体运动方程模拟块体站速度的无偏性和有效性进行了统计检验 .检验结果表明 ,块体的整体旋转与线性应变方程是描述块体运动的最优模型 .将中国大陆划分为 10个块体 ,应用块体的整体旋转与线性应变方程和块体上的GPS站速度估计了各个块体上的旋转与应变参数 ,按照 1°× 1°的间距计算了中国大陆及周边地区上 10 0 5个点的应变参数 ,分析了中国大陆及周边地区应变场的基本特征 .用本文方法得到的主压应变方向与地质学方法和测震学方法得到的主压应力轴方向具有很好的一致性 (华南块体除外 ) .
Two kinds of elastic equations of motion for the block are deduced and established: the global rotation and the uniform strain equation of the block and the global rotation and linear strain equations of the block.Using the principle of statistics, using the GPS stations on the Western, Tibetan and North China blocks Velocity data, the unbiasedness and validity of these two kinds of elastic equations of motion and rigid body equation of motion simulating the velocity of the block station are tested statistically. The test results show that the global rotation and linear strain equations of the block describe the motion of the block The optimal model is that the Chinese mainland is divided into 10 blocks, the rotation and strain parameters of each block are estimated using the global rotation and linear strain equations of the blocks and the GPS station velocities on the blocks, and according to 1 ° × 1 ° , The strain parameters of 105 sites in China and the surrounding areas were calculated and the basic characteristics of the strain field in the Chinese mainland and the surrounding areas were analyzed.The principal compressive strain directions obtained by this method were compared with those of geology and seismometry The obtained principal compressive stress axis has a good consistency (except for South China block).