A comprehensive underground safety monitoring system layout for the Jinfeng Coal Mine. This technical drawing illustrates the intricate network of mine shafts, tunnels, and safety monitoring points throughout the mining complex. Key infrastructure components include main inclined shaft, auxiliary inclined shaft, ventilation shaft, central transport tunnels, and water pumping stations. This plan shows designated safety monitoring locations for fire (火) and water (水) detection systems throughout the mine, with particular focus on critical areas such as material storage rooms, pump houses, and main transportation routes. The monitoring system incorporates safety passages (安全通道), ventilation pathways (回风巷), and blast-resistant wave doors at strategic locations. This April safety monitoring plan uses a color-coded system to differentiate between various tunnel types, ventilation routes, and monitoring points, ensuring comprehensive coverage of the underground mining operation.