THE HYDROGEOLOGICAL CONDITION OF HUIZE Pb-Zn MINING AREA AND THE PREDICTION OF WATER DISCHARGE OF QILINCHANG DEPOSIT

Thrugh the detai1ed StUdy of the hydrogeological condition in Huize Pb-Znmtalng are' it is presented tha Plq+m, Clb, C1d and D3zg are the mainaqufers and Pll, Csm are the main imPervious beds in thes area. There areW tyPes of groundwer: krt watef, fissure water and poreWatf, of themkarst water is the most boohall. According tO the hydrogeological condition,three secondary hydrogeological units are divided as follows:they are Longwang!niao-Kongi iaP ingal, Qinl inchang-Zhayi ngshan andKUangshanchang-Zhehai secondny hydrogeological unit. The last twO unitscan also be divided into several hydrogeological blocks.In them,Qilinchanghydrogeological block is a shmp sloping struCtUre,and it is bounded byPll+Csm impervious beds on east, Qilinchang imPervious fault on west andDzh+ E lq imPervious beds on north, then becomes one reversely indePendentgroundwater system. And the deposit's WaterimpregnatCd aquifers are Clb.Cld and Dszg. So Qilinchang dePosit belongs to the first subtyPe ofWaer-imPregnaed deposit of kart aquifer: Water-imPregnated deposit ofkarst fissure, the degree of comPlexity of hydrogeological condition ismoderate.By researching the regularty of recharge. runoff. discharge and regime ofgroundwater, it is known tha the drioSPheric Precipitation is imPota togroundwater recharge, and groundWater balance is calculated at the sametime.Finally, deep grOundwater discharges of l5ll, l45l and l39l levelof Qilinchang deposit are calculated and predicted with watr-balancemethod, hydrgeological assindlating method, groundwer dynamicsmethod (big well method) and hitZ fndte element method.