A Method for Optimal Distribution of Rainfall Observation Network in Reservoir Basin

Abstract

The present invention discloses an optimized spot deploying method for a rainfall observational network in a reservoir basin. The method comprises the steps of (1) collecting the observation data of all rain gauge stations that are subjected to the optimized spot deploying treatment; (2) constructing Thiessen polygons based on the spot locations of the rain gauge stations; (3) calculating the area S of each Thiessen polygon; (4) calculating the difference degree between the observation data of every two adjacent rain gauge stations; (5) judging whether the area S of each Thiessen polygon with one rain gauge station located therein exceeds a threshold value or not; on the condition that the area S of the Thiessen polygon does not exceed the threshold value, arranging no extra rain gauge station; on the condition that the area S of the Thiessen polygon exceeds the threshold value, judging whether the difference degree between the observation data of the above rain gauge station and adjacent rain gauge stations exceeds the DT or not; on the condition that the difference degree between the observation data of adjacent rain gauge stations does not exceed the DT, arranging no extra rain gauge station; on the condition that the difference degree between the observation data of adjacent rain gauge stations exceeds the DT, arranging an extra rain gauge station. Based on the above method, the distribution nonuniformity of the rainfall space in the reservoir basin is fully taken into account. Therefore, the observation requirement of the water and rainfall information in the reservoir basin can be met in the most economical manner.

Description

technical field [0001] The invention relates to the technical field of hydrological analysis, in particular to a method for optimizing distribution points of a rain regime observation network in a reservoir basin. Background technique [0002] The observation network of water and rain in the reservoir basin is an important observation facility required for the operation of the reservoir. The network of water and rain regime observation stations is not only an important data source for the analysis of water and rain regime changes in reservoir basins, but also provides necessary data support for optimal scheduling of reservoirs. The existing network of observation stations for water and rain in reservoir basins is constructed according to the requirements of "Hydrological Information Forecasting Specifications" (GB / T22482-2008) and "Technical Guidelines for Hydrological Station Network Planning" (SL34-92). However, with the current Due to changes in climate conditions and un...

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Problems solved by technology

The existing network of observation stations for water and rain in reservoir basins is constructed according to the requirements of "Hydrological Information Forecasting Specifications" (GB / T22482-2008) and "Technical Guidelines for Hydrological Station Network Planning" (SL34-92). However, with the current Due to changes in climate conditions and underlying surface conditions in the basin, the existing observation station network has been difficult to meet the needs of water and rainfall information observation in the basin, especially under the condition of heavy rainfall in the whole basin, the observation stations in some areas cannot capture accurate rainfall information, and there are Missing phenomenon

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