Abstract: An intercepting net based on reversing current motion at a river bottom, including a net body connected to ropes arranged in a crisscross manner, an anti-floating and anti-drifting rope and a mounting frame. A top of the net body is connected to a main rope and an auxiliary rope arranged side by side. The anti-floating and anti-drifting rope includes lead-core ropes arranged in a crisscross manner and connected to the ropes. The net body includes a vertical interception portion, whose bottom is connected to a first anti-escape net portion extending in a first direction and a second anti-escape net portion extending in a second direction opposite to the first direction. First anti-floating and anti-drifting chains are sequentially fixed on the first anti-escape net portion along the first direction. Second anti-floating and anti-drifting chains are sequentially fixed on the second anti-escape net portion along the second direction.

Abstract: An intercepting net based on reversing current motion at a river bottom, including a net body connected to ropes arranged in a crisscross manner, an anti-floating and anti-drifting rope and a mounting frame. A top of the net body is connected to a main rope and an auxiliary rope arranged side by side. The anti-floating and anti-drifting rope includes lead-core ropes arranged in a crisscross manner and connected to the ropes. The net body includes a vertical interception portion, whose bottom is connected to a first anti-escape net portion extending in a first direction and a second anti-escape net portion extending in a second direction opposite to the first direction. First anti-floating and anti-drifting chains are sequentially fixed on the first anti-escape net portion along the first direction. Second anti-floating and anti-drifting chains are sequentially fixed on the second anti-escape net portion along the second direction.

Abstract: A method for constructing a cage body of a tapered cage assembled in a rigid-flexible manner includes steps as follows. A cage body of a tapered aquaculture cage is assembled by combining a rigid-structure copper alloy stretched mesh and a flexible synthetic fiber mesh. Pipe rings mounted on the standard component of the synthetic fiber mesh are mated in a staggered manner with plugging rings on the standard component of the copper alloy stretched mesh, and high-performance synthetic fiber rope is rove through the pipe rings and the plugging rings; in this way, the connection is completed. The cage effectively improves the cage resilience under the ocean current condition, avoids mesh sheet deformation or corner breakage, enhances the water exchange capability in and out of the cage body of the gravity cage, and effectively improves the growth environment for the fishes farmed in the cage body.

Abstract: A method for constructing a cage body of a tapered cage assembled in a rigid-flexible manner includes steps as follows. A cage body of a tapered aquaculture cage is assembled by combining a rigid-structure copper alloy stretched mesh and a flexible synthetic fiber mesh. Pipe rings mounted on the standard component of the synthetic fiber mesh are mated in a staggered manner with plugging rings on the standard component of the copper alloy stretched mesh, and high-performance synthetic fiber rope is rove through the pipe rings and the plugging rings; in this way, the connection is completed. The cage effectively improves the cage resilience under the ocean current condition, avoids mesh sheet deformation or corner breakage, enhances the water exchange capability in and out of the cage body of the gravity cage, and effectively improves the growth environment for the fishes farmed in the cage body.