南堡油田1号构造海底管道波浪数学模型研究

Numerical Wave Simulations for the Submarine Pipeline in 1~# Nanpu Oilfield Construction

以采用考虑底摩擦损耗和风能输入的抛物型缓坡方程为控制方程建立数学模型,研究了冀东南堡油田1号构造人工岛建成后对周边海底管道海域波浪场的影响。研究结果表明,由于管线沿线水深较浅,外海波浪传至近岸大多在浅滩发生破碎,多数点处的波高达到极限波高。在50年一遇波浪条件下,工程区主要是受S^SE方向的外海波浪控制,人工岛NP1-1D至NP1-2D海底管线沿线波高H_(1%)为3.84~4.28 m,NP1-1D至NP1-3D海底管线沿线波高H_(1%)为3.46~5.07 m。

The surrounding wave field of 1~# Nanpu Oilfield Construction are studied by a numerical wave model based on the parabolic mild- slope equation considering the bottom friction and wind stress.The simulation results show that, the shoaling effect along the pipeline leads the waveheight tend to approach a limited value that the waves become unstable and break in the shore. In 50 years return period, the project area is mainly under the control of waves from S^SE direction. H_（1%） along the pipeline from NP1-1D to NP1- 2D is about 3.84~4.28 m and H_（1%） along the pipeline from NP1-1D to NP1-3D is about 3.46~5.07 m.