Abstract:

The ground surface hydrology of Huayingshan Tunnel is monitored and analyzed so as to determine the hydrogeochemical characteristics, recharge, conditions of runoff and discharge of groundwater and its relationship with hydrological environment of water on ground surface. The hydrogeochemical characteristics of groundwater and the influencing degree and range of groundwater are studied by automatic hydrological monitoring system fed back quality and quantity information of water. The results show that: 1) The groundwater runoff regime in the tunnel area is better; the runoff route is short; it is closely related to the precipitation according to routine water quality analysis and isotope analysis. 2) The water flow and water level collected from the 4 ground surface hydrological monitoring points show a reduction trend which shows that the tunnel construction has some influence on groundwater system. 3) Relevant analysis shows the water gushing has a significant relationship with Longgu Well and Longshen Cave.

Key words: karst tunnel, water gushing, hydrological monitoring, water chemistry, isotope