Abstract
The pumping tests on the hydrogeology, including single well tests, group wells tests and land subsidence analysis, were carried out for Tianjin transportation center project. The straight-line graphical method, curve fitting method, formula method and infiltration curve extrapolation method were applied to obtain the permeability coefficients and influence radius of the main aquifers, and to obtain the mutual influence between the aquifers. The results of the land subsidence observations indicate that amount of land subsidence decreases with increasing distance from the wells. And it is also found the land subsidence of a band range is obvious, and its distribution changes unregulated. It could be preliminarily inferred that this anomaly is due to the venue internal west alkali river that has been recently backfilled.
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