What are the methods for security guards to prevent underground water storage from flowing backwards in Zhanjiang rainstorm days?

The methods to prevent backflow in the basement are: heightening the entrance of the basement, doing a good job of drainage around the basement, planting trees around the basement and monitoring in time.

The entrance should be raised. When it rains heavily in Zhanjiang, security guards use their bodies to block water, just to prevent the basement from flowing backwards, because some basements are short and easy to flow backwards. In order to avoid backflow in the basement, we need to increase the entrance of the basement, increase the enclosure and install the backwater valve. If the entrance to the basement is built very high, even if there is a rainstorm, there will be no basement backflow. On rainy days, some residential basements were flooded, and many cars were flooded. Some community basements are very good. This is because of the basement entrance. A low entrance to the basement can lead to this kind of thing. Heightening the entrance to the basement is one of the methods to solve the problem of backward flow in the basement.

Do a good job of drainage. If the terrain around the basement is low, it is very likely that the basement will flow backwards, and some cars will be flooded. The insurance company will not compensate, so it can only find property compensation. No matter who compensates, the loss will be great. We must do a good job of drainage in advance. Some drainage ditches should be installed around the basement to ensure smooth communication, because the rainstorm is urgent. If there are few ditches, it is likely to cause open space backflow. Some ditches have no sundries piled there for a long time, which will also lead to the increase of accumulated water and rush to the door of the basement, resulting in backward flow in the basement.

All kinds of trees around the basement, if the greening around the basement is good and there are many tall trees, can absorb water and effectively prevent the basement from flowing backwards. We can plant more trees around the basement, which is also very effective. In order to prevent backflow in the basement, we should first do a good job of prevention and plant flowers and plants around the basement. Because of the increase of these vegetation, the water absorption will increase, and backward flow in the basement will rarely happen. There are many things to pay attention to when building a community. The basement should not be too low, otherwise it will be flooded and those cars will be damaged.