Use effect of anti-seepage membrane in fish pond

8. Anchoring method of anti-seepage membrane for fish pond:

1. For mud ponds, the trench anchoring method should be adopted. The anchoring ditch is required to be 40 cm away from the construction plane. The ditch width is 4 cm and the ditch depth is 40 cm CM. Pull the membrane into the U-shaped ditch and use sandbags or The soil will fix it.

2. For the cement pool, the expansion bolt anchoring method should be adopted. The width of the bead should not be less than 2cm, the thickness should not be less than 2mm, the spacing of the expansion bolts should not be greater than 600mm, and anti-corrosion measures should be taken at the bead. The diameter of the bolts is not less than 4mm, and the spacing is not more than 0.5mm. During construction, use a prepared sandbag to temporarily fix the film in place to prevent the film from being displaced by strong wind, and then anchor the expansion bolts.

9. Leak-proof inspection method after laying of anti-seepage membrane for fish ponds:

Before the fish pond is filled with water and aquaculture, it is necessary to do a good job of leak-proof inspection. If there is any problem, it can be solved in time to avoid leakage. Under normal circumstances, the inspection methods include visual inspection, inflation inspection and destruction test. Visual inspection is mainly to carefully inspect the appearance of the laid impermeable membrane, the quality of the weld, the T-welding, and the substrate debris. In addition to visual inspection, vacuum detection and air pressure detection can also be used if necessary. The inflation strength of the inflation pressure detection is 5 minutes without air leakage. Considering that the coil is soft and deformable, the pressure is allowed to drop by 20%. When the film is subjected to tensile test, the standard is that during the peeling and shearing test, the weld is not torn and the mother is torn and damaged. At this time, the welding is qualified.

Ten: Description of the service life of the anti-seepage film for fish ponds

Common specifications of anti-seepage membrane for fish ponds are 0.4mm, 0.5mm and 0.75mm. As long as it is used reasonably, the life of an impermeable membrane with a thickness of 0.5mm can reach more than ten years. The anti-seepage membrane for fish ponds produced with brand-new raw materials has a service life of more than 20 years if it is not exposed to the sun. If it is exposed to the sun, the service life is 5-8 years.