深海可视化移动地质取样系统的应用与展望

Application and prospect of deep sea visual mobile geological sampling system

为了测试海底取样器可视化和可移动技术的可行性,广州海洋地质调查局对引进的深海可视化移动地质取样系统进行了海试。在水下定位系统的辅助下,系统通过4个推进器移动开展精准取样,移动范围超过50 m,成功获得1 t样品。同时也暴露出螺旋桨推力不足、转向不灵敏、观测海底时画面曝光过大、抓斗闭合时间较长等问题。今后将采取补充浮力材料、更换螺旋桨部分液压管和补偿器、更换可调节亮度的大灯等手段对系统进行改进,以便更好地服务于海洋地质调查和天然气水合物勘查。

In order to test the feasibility of visualization and mobile technology of submarine sampler,Guangzhou Marine Geological Survey conducted sea trials on the imported deep-sea visual mobile geological sampling system.With the assistance of an underwater positioning system,precise sampling with this system is carried out through the movement of four thrusters over a range of more than 50 m,and 1 t samples was successfully obtained.At the same time,it also exposed some problems such as insufficient propeller thrust,insensitive steering,excessive exposure of images when observing the seabed,and long closing time of grab buckets.In the future,measures will be taken to improve the sampling system,such as supplementing buoyancy materials,replacing hydraulic pipes and compensators for propeller parts,as well as replacing adjustable brightness headlights etc.,in order to better serve marine geological surveys and natural gas hydrate exploration.