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Improved Xinanjiang model-based hydrological forecast method suitable for hill region

A Xin'anjiang model and hydrological forecasting technology, which is applied in climate change adaptation, special data processing applications, instruments, etc., can solve problems such as difficulties in the application of hysteresis algorithms

Active Publication Date: 2018-11-23
HOHAI UNIV
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Problems solved by technology

At present, the parameters of the hysteresis algorithm still depend on the calibration of rainfall observation data to a large extent, and the method for quantitatively studying the relationship between the parameters of the hysteresis algorithm and the geomorphic features is not yet mature. Mound watershed application is more difficult

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  • Improved Xinanjiang model-based hydrological forecast method suitable for hill region
  • Improved Xinanjiang model-based hydrological forecast method suitable for hill region
  • Improved Xinanjiang model-based hydrological forecast method suitable for hill region

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Embodiment Construction

[0097] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0098] Now take the Luoyang River Basin in the western area of ​​Taihu Lake as an example to illustrate the effectiveness and rationality of the inventive method. The Luoyang River Basin is located in the upper reaches of the West Tongsheng area of ​​Taihu Lake, with an area of ​​149.96km 2 . The Luoyang River in the area is located in the east of Jurong City, with a distance of 140.11 km from Shangshoulun Mountain, Gaoli Mountain, Tianwang Mountain, etc. 2 The incoming water belongs to the west...

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Abstract

The invention discloses an improved Xinanjiang model-based hydrological forecast method suitable for a hill region. The method comprises the steps of firstly, extracting geomorphologic data to build adigital elevation model (DEM); secondly, acquiring geomorphologic parameters, and establishing a geomorphologic instantaneous unit hydrograph (GIUH) according to the extracted geomorphologic parameters; and thirdly, replacing an original confluence calculation process of a Xinanjiang model with the GIUH, and carrying out hydrological forecast on the hill region after calibration by a constructedsemi-distributed watershed hydrological model. According to the method, global optimization is realized; the calculation efficiency is improved; the simulation precision is improved; and the requirements in multiple aspects of the hydrological forecast method are met.

Description

technical field [0001] The invention belongs to the technical field of hydrological forecasting in the field of hydrological and water resources, and in particular relates to a hydrological forecasting method in hilly areas based on an improved Xin'anjiang model. Background technique [0002] Basin hydrological models have always played an extremely important role in the study of hydrological laws and the solution of practical production problems. Widely used, the research of watershed hydrological model can be developed rapidly. For flood control and disaster reduction, the basin hydrological model is the core part of the modern real-time flood forecasting and dispatching system, and it is the key technology to improve the forecast accuracy and increase the foreseeable period; for the sustainable utilization of water resources, the basin hydrological model is the key to the evaluation, development, utilization and management of water resources. Theoretical basis; for the p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCY02A10/40
Inventor 施顺成方国华展永兴郭枫
Owner HOHAI UNIV
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