Drainage box culvert desilting safety operation control method and control system

Abstract

The invention provides a drainage box culvert desilting safety operation control method and system. The control system mainly comprises a safety monitoring module, a risk assessment module and a risk response module. Performing field safety monitoring on the drainage box culvert through the safety monitoring module; the risk assessment module carries out risk assessment according to the field safety monitoring data; if the risk assessment result is no risk, the operator continues the operation process; and if the risk assessment result is that there is a risk, the risk response module sends an early warning signal to the operator, and the operator evacuates. According to the method, the upstream water level, the downstream water level, the gas concentration and the heart rate of an operator of the box culvert are monitored and evaluated at the same time, the decision vector is output, and finally decision response is carried out, so that comprehensive inspection and control of desilting safety operation are achieved. The method has the advantages of being reasonable and comprehensive in control method, wide in decision response range and high in operation safety level.

Description

technical field [0001] The invention relates to the technical field of box culvert construction risk assessment, in particular to a control method and a control system for safe operation of drainage box culvert dredging. Background technique [0002] The urban trunk drainage box culvert plays the function of the urban sewage transfer artery, but when the sewage enters the small slope area from the large-slope drainage box culvert or the cross-sectional area of ​​the box culvert increases, resulting in a decrease in the flow rate of the sewage, a large amount of bedding mud is carried by it. Sand and large particles of suspended silt are easily deposited at the bottom of the box culvert. With the passage of time, solidification and hardening will occur after the physical and chemical reaction of the sediment, resulting in a further reduction of the flow cross section. The silt deposition in the box culvert not only affects the normal operation of the drainage box culvert, bu...

AI Technical Summary

Problems solved by technology

However, after the manual dredging operation, a large amount of toxic, harmful, flammable and explosive gases in the sediment are quickly released due to the disturbance, and the concentration of toxic, harmful, flammable and explosive gases in the limited space of the box culvert rises sharply, causing great safety hazards for underground workers. At the same time, due to the large flow in the main drainage box culvert, after the plugging and diversion, the upstream water flow is affected by rainfall, branch pipe flow, etc., and the upstream water level is prone to rise rapidly in a short time, and there will be a dangerous situation of plugging failure, resulting in Unfavorable situations such as staff being washed downstream

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