唐氏孔隙介质波动理论修正

唐应吾先生根据拉格朗日运动方程建立了孔隙介质波动方程组，将具有实际意义的孔隙介质物理参数同波动方程弹性参数建立起直接的联系。

Revision of Tang Yingwu''s wave theory in porous medium

Tang Yinwu derived porous-medium wave equations from Lagrange's motion equations. The wave equations relate useful porous-medium physical parameters to the elastic parameters of wave equations. He also predicted theoretically the pat-terns for producing three kinds of body waves in porous medium:fast longitudinal wave, slow longitudinal wave and transversal wave. His wave equations may be changed into those in loose porous medium,where only fast longitudinal wave can be produced without slow longitudinal wave and transversal wave,thus leading to the same wave equation forms in compact medium and wet-grained loose medium.Hence we can say that his theory is quite suitable to porous medium- Nevertheless,we can ameliorate Tang Yingwu's wave theory in porous medium by revising the flow-resistance parameter,adopting permeability and obtaining the new Lames coef-ficients which can be derived from skeleton parameter and fluid physical parameter in porous medium.