摘要
黔东地区碳酸盐岩分布广泛,因其可溶性强,常发育成落水洞、溶洞、岩溶管道等岩溶形态。研究本区岩溶地下水的水化学特征有助于了解地下水的运移规律,具有重大的实际意义。统计分析岩溶地下水水化学特征认为,在丰水期,地下水中的主要组分Ca^(2+)、Mg^(2+)、HCO)3^-、SO_4^(2-)、和矿化度呈现下降的趋势,p H值呈现升高的趋势,地下水动态过程曲线呈尖齿状。在枯水期,主要离子呈现上升、p H值降低的趋势,其平面形态呈波状。从研究区岩溶地下水的化学组分的物质来源看,其主要矿物质成分为Ca^(2+)、Mg^(2+)和HCO_3^-。矿化度、硬度、钙镁离子浓度之间有明显的正相关关系。
Carbonate rocks are widely distributed in Guizhou Province, because of its soluble strong, often de-velop into sinkholes, caves, karst, karst morphology, causing the lack of surface water. Migration regularity of karst groundw-ater in this area can effectively solve the problem of karst water, it has great practical significance. Statistical analysis of water chemical characteristics of karst groundwater, in the wet season, the main group of groundwater in the Ca2＋, Mg2＋, HCO3 -, SO4 2- and salinity decreased, pH value increased, the dynamic process of groundwater is jagged curve. In the dry season, major ions increased, pH value decreased, the plane shape of wavy. Sources from the chemical group of karst groundwater in the study area is divided to see, the main mineral components of Ca2＋, Mg2＋ and HCO3 -. There was a positive correlation between the degree of mineralization, hardness, concentration of calcium and magnesium ions.
出处
《地下水》
2015年第6期22-24,共3页
Ground water
关键词
岩溶
地下水
水化学
特征
Karst
groundwater
water chemical
characteristics
