Analysis on the Emergency-Type Groundwater Source Fields of Qujing City in Yunnan

Water resources in Qujing urban areas mainly come from the meteoric water．Its natural recharge capacity is limited and the surface drainages have been severely polluted．In general, the amount of the water resources can satisfy the needs of the social development, but its water quality becomes worse and the vulnerability of water supply-security is high．Considering the factors of groundwater recharge capacity, protective layer, water quality, groundwater vulnerability, environmental engineering geologic problems and others, it is concluded that karst groundwater in the eastern margin of Qujing basin is a good water source for emergency. The water-rich blocks such as Jiancaoba and Yuezhou with pressure resistance, rich groundwater recharge capacity, large depth, low groundwater vulnerability, class two water quality, convenience of mining conditions, and not easy to lead to collapse environment engineering geological problems, may become the emergency-type groundwater source fields．