Abstract: In order to improve the level of urban fire safety and the efficiency and quality of fire rescue, based on the hydraulic model of water supply network, this paper studies the fire water supply capacity of municipal pipe network, uses algorithms to analyze and calculate the maximum fire water supply capacity of municipal pipe network that meets the demand of fire water intake under emergency conditions, and obtains the actual water supply capacity of municipal water supply facilities under disaster conditions. Fill the vacuum between the management department of urban fire water supply facilities and the actual fire application unit, solve the problem of "information fault" between various information and "information island" between application systems, give full play to the efficiency of urban fire water supply facilities, and ensure fire safety.

Key words: municipal pipe network; hydraulic model of water supply network; fire water supply capacity; hydraulic characteristics; algorithm research