(1), mosaic will first geotextiles in land on the ground for sewing stitching, the single width geotextiles splicing in 4-5 meters into the width of 20 meters of geotextile, and according to the design length of cut. And then the winding barrel in laying geotextile, barrel length of 22 meters. Generally the edge sewing edge winding and on both sides with artificial straightening to prevent the geotextile during winding bend folding. And in the exposed end head of geotextile on the installation of a diameter 90cm of the pipe.
(2), shipping is mainly arm frame rings geotextile barrels hanging to the geotextiles laying ship at the fixed. And the repression of geotextiles laying gravel pack together into the boat.
(3) laying positioning positioning is the key process of whole laying laying process, it is directly related to the laying quality. In order to rapid construction, it must be able to quickly and meet the requirements of positioning all-weather device, therefore I unit after a long repeated demonstration, using GPS real time differential international advanced points positioning system. The system consists of three sets of high precision GPS composition. One major receiving satellite signals and transmitting differential signals. In the operation of ship is provided two sets of the receiver to receive satellite signal and differential signal. These signals are simultaneously input the computer, after conversion to determine the precise location position. To design a good computer operation procedures in the paving operation, then on the computer to set the required the laying of the construction area of Geotextiles by design coordinates, according to each geotextile actual dimensions and construction layout of the area divided each geotextile cell construction drawing plane, through the computer screen showing the hull set graphics and set the position and attitude of the laying of cells, and then 4 sets of hinge anchor machine for mobile position, so that the ship positioning edges and set the cell laying starting sideline coincidence, that hull has accurate positioning can be laying operation.
(4), the hull after laying of accurate positioning, outcrops in the circle of geotextile tube installed anchorage anchor and set aside a certain length, with anchor capstan reverse mobile laying ship is equivalent to the reservation length distance cast anchor, anchor, and then moved to start laying the starting position, a certain gradient so the mobile distance must be considered quasi. Put down the laying barrel to coated surface, such as a height must be at a higher point as a standard, as long as look at the barrel sling tension can be determined without a barrel, and according to the length of the rope is decentralization can be determined with and without coating surface elevation. Then the mobile anchor capstan to set regional location of laying bottom paving, the mobile must be four anchor machine at the same time, two strain, two relaxation, if not at the same time or deviate must timely adjust. Because it is so dynamic positioning in the whole moving process are displayed on the computer, as long as the predefined trajectory and paved route consistent means, laying accuracy. Because the spreading process is operated under water, so the influence on the flow and the flow of very few, in order to reduce influence of flow and flow in spreading as far as possible the use of concurrent or countercurrent direction. At the same time in the paving process each mobile 2-3 meters distance must be throwing gravel pack sand will be pressed or geotextile paving, so it cannot float. The pawnshop to relax at the end of barrel sling, the laying ship out laying area, at the same time edge polishing and gravel pack will bottom part of geotextiles laying down and then raise the barrel, the laying process is complete. Move the laying ship under a cloth laying.