THE GEOLOGICAL ANALYSIS AND MODELING OF MINING WATER FLOW──AS AN EXAMPLE OF SAN SHAN ISLAND GOLD MINE

The hydrogeological condictions of the deep rock at San shan island gold mine is examined from the observation data of exploratory wells and drift. The recharge water quantity from each water body(including sea water、salt water in the deep rock and fresh water in Quaternary deposits)is determined using the laboratory test on isotope 18O.Numerical model and nonlinear porgramming method are used to test and calibrate the previous examination results,and to determine hydrogeological paremeters.The mine water flow in the next digging operation is also predicated by numerical model.A sufficient numerical analysis,in which the deviation between practical and predicated water flows may exist due to some unknow information and different digging methods,is presented in this paper.