Intelligent four-quadrant flood regulation method for middle-sized and small-sized reservoirs

Abstract

The invention relates to an intelligent four-quadrant flood regulation method for middle-sized and small-sized reservoirs. According to the intelligent four-quadrant flood regulation method, the rainfall-runoff relation P+W0-R or W, the peak discharge relation R or W-Qm, the flood regulation relation V-Q, the relation between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm are drawn in a four-quadrant diagram relating to centering; the runoff depth R or the total primary flood amount W corresponding to the precipitation P is obtained according to the peak discharge relation R or W-Qm curve; the Qm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the peak discharge relation R or W-Qm curve; and the Vm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the relation curve between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm; and the intersection point of a straight line between the Qm and the Vm and the flood regulation V-Q curve is obtained, and the reservoir capacity V and the spillway discharging capacity Q afteer flood regulation are obtained. According to the intelligent four-quadrant flood regulation method, the relevant curves of the reservoir inflow prediction and reservoir flood routing calculation of the reservoirs are drawn on the diagram, the setting time of a flood regulation scheme can be shortened, and the prediction timeliness of the small-sized reservoirs is effectively improved.

Description

technical field [0001] The invention relates to the field of water conservancy, in particular to an intelligent four-quadrant flood control method for medium and small reservoirs. Background technique [0002] Small and medium-sized reservoirs have the characteristics of small basin area, large river gradient, short confluence time, and fierce floods. These characteristics lead to a very short forecast period for reservoir forecasting, and it is not suitable to use the production and confluence models of large reservoirs for complex forecasting and scheduling. [0003] In practical work, the comprehensive correlation diagram of flood forecast is often used for forecasting. When small and medium-sized reservoirs are threatened by floods, staff usually need to query a large number of charts, which makes the relevant flood control calculations very cumbersome and takes a lot of time, which is not conducive to the formulation of flood control plans for small and medium-sized re...

AI Technical Summary

Problems solved by technology

When small and medium-sized reservoirs are threatened by floods, staff usually need to query a large number of charts, which makes the relevant flood control calculations very cumbersome and takes a lot of time, which is not conducive to the formulation of flood control plans for small and medium-sized reservoirs

On the other hand, a large number of small reservoirs lack historical data, or the data is irregular, and it is difficult to form a relevant chart

Moreover, the capabilities of small reservoir management and maintenance personnel are uneven, and they cannot flexibly operate conventional methods

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