【摘要】 埕岛海域平台周围管线悬跨问题突出,近几年来,普遍采用仿生草技术进行治理。通过对实测资料的解译和统计,对仿生草的治理效果进行研究,结果表明:最近几年所调查的22个平台端中,18个平台端有明显泥沙淤积现象,泥沙淤积厚度为0~1 m,海底管线部分或全部被重新埋藏;19个平台端在桩脚处涡流区仍存在管线裸露或悬跨现象;仿生草的治理效果受管线走向和潮流方向的影响,与潮流方向一致或与潮流方向夹角较小(<40°)的海底管线,治理效果良好。更多还原

【Abstract】 Suspended span of submarine pipelines around the platforms in the Chengdao sea area is serious.A bionic grass technology introduced by the Shengli Oilfield has been generally applied for treating this problem in recent years.The effect of the treatment with the bionic grass technology is studied based on the interpretation and statistics of measured data.The results show that 18 of the 22 platforms that were investigated in the past few years have an obvious sedimentation phemomenon.The sedimentation thickness is 0 ~ 1 m and the submarine pipelines are reburied partly or completely.There are still pipeline bare or spanning phenomena at the foot vortex regions of 19 platforms.The effect of the bionic grass treatment may be influenced by the strike of pipelines and the direction of tidal currents.Good effect will be achieved if the strike of pipelines is consistent or has a smaller included angle(less than 40°) with the direction of tidal currents.更多还原