Impermeable membrane-防渗膜

水产养殖防渗膜具有抗拉伸、抗冲击、抗撕裂强度强、耐静水压高、抵抗紫外线及防渗水性能好等特点，特It is not suitable for engineering applications such as fish pond anti-seepage, fish pond anti-seepage, shrimp pond anti-seepage, shrimp pond anti-seepage, eel farming pond anti-seepage, and loach farming pond anti-seepage. Covering the entire fish and shrimp pond or bottom with HDPE anti-seepage film can completely separate the pond bottom from the water, and has significant effects on preventing leakage, virus pollution, and microbial erosion in high and low level shrimp ponds. Due to the smoothness of the HDPE anti-seepage film, it is not only convenient for disinfection and dredging, but also helps to prevent the spread of bottom pathogens, shorten the time for cleaning the bottom of the shrimp pond and drying the pond. After seven days in the drainage ditch, it can be raised, which can increase the number of shrimp and reduce the cost of raising shrimp.

Climate requirements for aquaculture anti-seepage film before construction：

A. 气温 5—40℃为宜，考虑到防渗膜的热胀冷缩性，根据经验，天冷时，防渗膜的铺设应紧一些 天热时应松弛；但要注意，在夏天应避免中午时的高温。

A. The temperature should be between 5-40 ℃. Considering the thermal expansion and contraction properties of the anti-seepage film, based on experience, the laying of the anti-seepage film should be tight during cold weather and loose during hot weather; But it is important to avoid the high temperature at noon in summer.

B. 风力及雨天：风力超过4级或雨天应停止施工；风速小时，宜用砂袋压住防渗膜，依次向前推移，以利施工

B. Wind and rainy days: Construction should be stopped if the wind exceeds level 4 or if it rains; When the wind speed is low, it is advisable to use sandbags to press the anti-seepage membrane and move it forward in order to facilitate construction

The quality of the construction site meets the design requirements：

基面应干燥、压实、平整、无开裂、无明显尖突、凹凸不平。其平整度应在容许的范围内平缓变化，坡度均匀，坡厚一致。

The base surface should be dry, compacted, flat, without cracks, obvious protrusions, or unevenness. Its flatness should change smoothly within the allowable range, with a uniform slope and consistent slope thickness.