The Idea and Key Technical Prospect on Integration between Underground Reservoir and Surface Water System

Abstract

The problem of global water security is extremely serious due to the increasingly poor and uneven distribution of water resources and severe water pollution in some regions. Water security is a major long-term strategic demand of China, involving water resource supply, the prevention and control of flood, drought and water pollution, etc. In order to solve the prominent problems of global surface water shortage and the groundwater level drops caused by the over exploited of the traditional groundwater reservoir, the underground reservoir is proposed under the guidance of national strategy “Deep Into the Earth”. The protection and early warning of water security would be better through the interaction between underground reservoir and surface water system. This paper provides solutions for water security issues. In which, the preliminary concept of underground reservoir is defined, and the theoretical system of water security for underground reservoirs and surface water is put forward. Moreover, several key technologies are also proposed, including the distributed rainfall-runoff and water environment simulation with high precision, site selection and design of underground reservoir, the early warning and protection of water environment in underground reservoir, the joint operation of water quantity and quality between underground reservoir and surface water system, etc.