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中文摘要：
一个新理论模型被提出在 shear 流动下面基于稳固液体的二阶段的流动的动量方程描述沙山脉和沙波浪的内部运动机制。与二维的浅水方程和温和斜坡的波浪思考衍射方程联合这个方程，一个二维的联合模型被建立，确认被观察 hydrogeology，潮，波浪和沉积执行。数字结果与可得到的观察相比。令人满意的协议被完成。这个联合模型然后被用于 Dongfang 1-1 气体地区域到份量上预言海底的沙垅和沙波浪的运动和进化。作为结果，沙山脉和沙波浪运动距离逐年增加，这被发现，但是发展趋势是稳定的。
英文摘要：
A new theoretical model is formulated to describe internal movement mechanisms of the sand ridges and sand waves based on the momentum equation of a solid-liquid two-phase flow under a shear flow. Coupling this equation with two-dimensional shallow water equations and wave reflection-diffraction equation of mild slope, a two-dimensional coupling model is established and a validation is carried out by observed hydrogeology, tides,waves and sediment. The numerical results are compared with available observations. Satisfactory agreements are achieved. This coupling model is then applied to the Dongfang 1-1 Gas Field area to quantitatively predict the movement and evolution of submarine sand ridges and sand waves. As a result, it is found that the sand ridges and sand waves movement distance increases year by year, but the development trend is stable.
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