Why should the property be decorated with flood control sandbags in winter?

The reason why the property arranges sandbags for flood control in winter is to prevent flood control in spring and rainy season. According to relevant data, there is more rain in spring, which is prone to floods. Flood control sandbags should be arranged in winter. Flood control sandbags are commonly known as: fire fighting sandbags, waterproof sandbags, special fire fighting sandbags, flood fighting sandbags and flood fighting sandbags. Flood control sandbags generally use coarse sand, but generally do not use ultra-fine sand. Sand is the main material for flood control and emergency rescue, and it is also the fine aggregate in concrete pouring.