A method for identifying accidents in open channel water delivery systems

Abstract

The invention discloses an accident identification method for an open channel water conveying system. First, a simulation model of an actual channel is established; then a water consumption plan is used as an input, and the target opening of gates and downstream target water levels of each canal and pond at different times are obtained through the simulation calculation of the simulation model. and the target flow through the gate; the measured water level before and after the gate of each canal pool, the gate opening and the flow through the gate are used as input, combined with the target value calculated by the simulation to obtain the absolute maximum gate opening deviation, maximum water level deviation, final state Flow increment and final water level increment are four judging indicators, according to the four judging indicators to judge whether an accident occurred, the type of accident, the canal and pond where the accident occurred. The obtained accident source information will provide the basis for emergency dispatch, which is conducive to the rapid start of emergency plans, reducing the adverse impact of accidents, preventing the accident from spreading further or causing secondary disasters, and helping to ensure efficient water supply and canal systems or the structural safety of the water diversion project itself.

Description

technical field [0001] The invention belongs to the field of water conservancy, and relates to a channel automatic control technology, in particular to an accident identification method of an open channel water delivery system. Background technique [0002] Water resources are very important natural resources, strategic economic resources, and an integral part of a country's comprehensive national strength. The problem of water resources in my country is very prominent. The per capita water resources in my country are 2200m 3 At present, 16 provinces (cities, districts) have per capita water resources below the severe water shortage standard, and 6 provinces and districts have per capita water resources below 500m 3 . At the same time, my country's water resources are also characterized by (1) uneven distribution between years and years, frequent droughts and floods, and prominent contradictions between supply and demand; (2) uneven regional distribution and mismatching of...

AI Technical Summary

Problems solved by technology

Obtaining accident source information is a necessary condition for launching emergency plans or dispatching in a targeted manner, because only by knowing the type of accident, the accident pool, the specific location of the accident, and the severity of the accident can an appropriate emergency plan be proposed. Accident identification is the key to emergency response. The basis and preconditions of dispatching, but it is very difficult to obtain accurate and specific information about the accident at present. Often after the accident continues to develop for a period of time, the large water level and flow fluctuations in the system are observed by the management personnel, and then the on-site inspection of the canal is carried out. can be determined, especially when the accident occurs at night, the response cycle will be longer

In this way, a lot of time is wasted, the best time to reduce accident losses through accident scheduling is missed, and the risk of accidents continuing to develop into other more vicious accidents or causing secondary disasters is increased.

Images