Graded flood early warning method based on cesium model

• Main Authors: ZHENG CHUN, WANG YANHU, ZHANG PING, CHEN MINGCHUN, HUANG BIN, ZHOU YOUBAO, LIAO ZHOUYANG, LYU GANG, CHEN SHUIBING, YANG YANG, HE XIAOCHUN, DU SHUANGQUAN, XU LEYI
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2022
• Subjects: ALARM SYSTEMS; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

The invention provides a flood grading early warning method based on a cesium model. The flood grading early warning method comprises the following steps: establishing a simulation scene model in cesium software; calculating to obtain an actual river range and a flow function of the river; calculating to obtain the position of a connection section required for constructing the river surface; calculating to obtain a coordinate-based water level elevation of each section point position at a fixed moment by using a flood routing model; performing limited triangle division on the connection section to form a three-dimensional grid curved surface; simulating the time and the flow direction of the flood by using a dynamic texture mapping method; flood drawing; and performing graded early warning on the building. By adopting the technical scheme of the invention, the flood is efficiently and accurately simulated through a computer, the semi-Lagrange implicit integral method is applied, the volume conservation and mo