Abstract:

       Based on the water level data of different deep aquifers recorded by automatic water gauge in the pumping test, the hydraulic connection between pumping aquifer and nonpumping aquifer in the early pumping stage was analyzed in this paper. The results show that (1) the water levels in nonpumping aquifers were affected as the target aquifer was pumping,and in the early pumping stage, the effect was large, then the effect disappeared as the water level in the target pumping aquifer was stable or slowly down;(2)the further the distance between the target pumping aquifer and the nonpumping aquifer, the less effect to the water levels in nonpumping aquifers;(3)the water level effect in multi-aquifer test was related to the parameters α，β，n and  C_m  according to the numerical simulation of groundwater flow and the stress change principle.

Key words: pumping test, groundwater flow, numerical simulation, stress change principle, water level effect