Coal Engineering ›› 2025, Vol. 57 ›› Issue (5): 30-35.doi: 10. 11799/ ce202505005

Previous Articles     Next Articles

Rainwater regulation and storage method of coal mine industrial site based on SWMM model#br#

  

  • Received:2024-07-01 Revised:2024-08-20 Online:2025-05-13 Published:2025-07-03

Abstract: In order to optimize the effect of rainwater storage in coal mine industrial site under different rainfall conditions, a method of rainwater storage in coal mine industrial site based on SWMM model was proposed. The overflow calculation method for rainwater storage tanks based on the SWMM model is used to calculate the overflow in the catchment area and pipeline network of coal mine industrial sites during rainfall. Based on the optimization model of rainwater storage tanks and focusing on the overflow situation of rainwater storage tanks in the factory area, an objective function and constraint conditions for optimizing rainwater storage tanks are established. Non dominated sorting genetic algorithm is used to obtain the optimal drainage scheme of rainwater storage tanks and achieve reasonable rainwater storage in coal mine industrial sites. The research results indicate that this method can reduce underground seepage losses and surface runoff in coal mining industrial sites at different recurrence periods, and improve the external discharge of the factory area and the storage capacity of rainwater storage tanks. Among different types of rainfall, the water depth and flow rate at the outlet of the rainwater storage tank can be reduced. In different rainfall times, the number of overflow nodes, overflow time, and overflow depth can be reduced