关键词: 山洪灾害;监测站网;站网布设理论;调整优化;江西省;

Abstract: Monitoring station network is the most important and direct way to obtain the characteristics of rainstorm and flood in a region, especially in a small watershed in a complex mountainous area.Based on the research status and existing problems of the hydrological station network, we propose to use the cone method to analyze the total number of stations to meet the needs of small watershed flash flood disaster prevention, and use the risk potential correlation method to optimize the spatial distribution of the station network.The former method focuses on the temporal and spatial distribution characteristics of rainfall process, while the latter one focuses on the historical flash flood disaster and the early warning needs of villages along the river.Based on this theory, the rationality of monitoring station network layout in Yanshan County, Jiangxi Province is comprehensively analyzed.The conclusion shows that it is necessary to deploy new monitoring stations in locations of weak correlation and large population in risk areas to meet the needs of monitoring and early warning.The research results have guiding significance for the construction, adjustment and optimization of monitoring station network.

Key words: mountain flood disaster; hydrological monitoring network; layout theory; adjustment and optimization; Jiangxi Province;