The study of responding sensitivity of well water level to crustal stress-strain
Che Yong-tai · 2003
Sensitivities of responses of well water levels to different kinds of stress-st rain are worked out from the tidal effects of well water level, loading effects of surface water body and trains of Fengzhen well. The results represent as 6.6 ×10-9 bulk strain/mm, 9.6×10-7 bulk strain/mm and 1.0×10- 2 bulk strain/mm respectively. Based on the results, the corresponding strain and stress order of the aquifer around this well are then calculated for the ano malies of slow increase by 60mm of the water levels before the occurrence of Zha ngbei earthquake. The results are 5.76×10-5 bulk strain and 2.3kPa respec tively.