Application of groundwater stratified exploration technology in groundwater flow system research

Abstract

The groundwater stored in the aquifer is a kind of moving fluid, which is continuously distributed in space and can transmit pressure.It is driven by the potential energy difference to move from high to low head.Usually in the recharge area (high head), the groundwater moves vertically from top to bottom, while in the drainage area (low head), the groundwater moves from bottom to top.The movement of groundwater in aquifers is like the same life process, in which it always moves from the source to the sink in the direction of energy reduction, whether it is in a single or multiple permeable rock formations.Hydrogeological stratified exploration technology (HSET) makes it possible to monitor different depths of groundwater elements such as head, temperature and quality in the vertical direction, so as to realize the comparison of groundwater elements between the vertical points of multi-layer aquifer rock formations.At the same time, HSET can judge the potential source and sink conditions of different vertical sections of a full well or a single well, laying a foundation for finely describing the spatial movement of groundwater flow and delimiting the groundwater system.This paper discusses the principle, system structure and function of groundwater layered exploration based on the theory and experimental observation of groundwater flow system and expounds the application method of layered exploration technology in the identification of groundwater recharge or discharge area in Zhangye Basin.

Keywords

• groundwater flow system
• groundwater flow elements
• stratified exploration technology
• vertical water head monitoring
• the water flows up and down
• zhangye basin