柴达木盆地西部黑北凹地晶间卤水水文地质及水化学特征

Hydrogeologic and Geochemical Characters of Potassium-Bearing Brine in Heibei Concave in the West of Qaidam Basin

柴达木盆地西部的黑北凹地含有丰富的卤水资源,本文对柴达木盆地黑北凹地的水文地质特征与水化学特征进行研究,认为黑北沉积凹地第四纪晶间卤水富水性较好,孔隙度和渗透率较高;卤水KCl品位高,水化学类型以硫酸镁亚型为主;对黑北凹地中的晶间卤水的钾氯系数、溴氯系数以及钾总盐系数的分析表明,卤水为陆相成因,卤水源于溶滤水。

Heibei concave, which is rich in potassium brine, is a late Pleistocene and Holocene sediment concave located in the west of Qaidam basin. In his paper, the hydrogeological characteristics and hydrochemical characteristics of the Heibei concave brine are studied, it is concluded the brine is characterized by high grade KCl and medium watery. There are two hydrochemical types including chloride type and magnesium sulfate subtype. Ratios of correlative elements reflect that the brine is derived from continent leaching water.