The utility model relates to a net bag shaped
submarine cable protection structure comprising a protection net bag and aggregate, the protection net bag comprises an upper layer protection net and a lower layer protection net, the aperture of the upper layer protection net and the aperture of the lower layer protection net are both smaller than the external
diameter of the aggregate, and a filling cavity is formed between the upper layer protection net and the lower layer protection net. And the aggregate is filled in the filling cavity and forms a whole with the protective net bag. According to the protection structure, the flexibility and the deformability of the protection net bag are utilized, so that the protection structure can well adapt to fluctuation changes of
submarine topography, the protection net bag can be tightly attached whether cables in a
reef group area are suspended or complex landforms in a near-
shore area, all-around protection is provided for the cables, and cable damage caused by topographic factors is avoided; and the broken stones filled in the protective net bag and the
alloy steel
wire rope net bag form an organic whole, so that external force can be dispersed and absorbed when the
impact of
water flow and
sea waves is resisted, the cable is effectively prevented from being directly scoured and impacted, and the risk of cable
exposure and damage is greatly reduced.