Investigation, Evaluation and Countermeasures of Flood Disaster in Rural Grassroots in Plain Area

In view of the complex causes of flood disasters at the grass-roots level in the plains and the difficulty of defense, this study proposes a point-to-surface flood disaster survey and evaluation method in the plains: First, the villages in the plains are divided into low-lying villages based on the causes of the disaster. And the villages affected by river floods; secondly, the two types of villages are used as the unit to investigate the basic situation of village flood disasters, starting from the three-level flood control and drainage system of the drainage system in the village, the main drainage canal outside the village, and the middle and small rivers to complete the investigation of the flood disaster; The calculation methods of the village's critical rainfall index, critical rainfall index and river flood control capacity are put forward to quantitatively assess the village's flood disaster risk and engineering flood control and drainage capacity; finally, corresponding countermeasures are proposed from the engineering and non-engineering perspectives based on the investigation situation, which is for plain areas. Flood disaster prevention work provides a reference.