拜城盆地地下水化学特征及演化规律

The Hydrochemical Characteristics and Evolution Law of Groundwater in Baicheng Basin

在系统采集拜城盆地地下水化学样品的基础上,对盆地地下水化学分布特征及演化规律进行统计和分析,绘制Piper图和离子相关性图,阐述水化学类型及离子浓度变化.结果表明:拜城盆地地下水化学类型在流域范围内自补给区到排泄区大体上呈水平分带.补给区水化学类型以HCO3· SO4型为主;径流区以HCO3· Cl型、HCO3·SO4·Cl型为主;排泄区以SO4·HCO3型、SO4· Cl型为主.

On the basis of collecting hydrochemical samples in the groundwater,analiyzed the distribution and the evolution of groundwater,drawed a Piper and ion correlation charts,described the hydrochemical type and changes of ionic concentration.Study results showed that hydrochemical type of groundwater in baicheng basin presents horizontal zoning range from recharge area to discharge area in basin perimeter.The hydrochemical type in Recharge area is mainly HCO3 · SO4 type;The hydrochemical type in runoff area is mainly to HCO3 · Cl type and HCO3 · SO4 · Cl type;The hydrochemical type in Discharge area is mainly SO4 · HCO3 type and SO4 · Cl type.