摘要
通过对黄龙沟沟内主要景观的地表水的现场测定和采样后实验室测定,对黄龙沟地表水水化学特征的空间变化进行了讨论。结果表明:从上游转花泉到下游迎宾池,地表水中Ca^2+、HCO^3-质量浓度的降低是电导率(Ec)降低的主要原因,地表水中方解石饱和指数(SIc)为1.15~1.84,地表水水化学类型为Ca^2+-HCO^3-;在接仙桥与莲台飞瀑两处,地表水的HCO3-质量浓度不降反增,原因是前期地表水流入地下水系统中使CO2得到补充,从而使再次出露到地表水中的HCO^3-质量浓度升高。根据R型聚类分析,水化学参数分为4大类:第1类为[SiO4^4-]、[Mg^2+]、[Ca^2+]、[HCO^3-]、pCO2、Ec、[Al^3+],第2类为[SO4^2-],第3类为pH、SIc、[Cl^-],第4类为温度T。根据Q型聚类分析,核心景点地表水系统大致分为3大类:第1类为上游表生泉水,第2类为中游溪流地表水,第3类为下游地下水转为地表水。地表水从上游到下游,方解石和白云石均处于过饱和态,将继续形成钙华;长石与钙蒙脱石可能存在向温石棉、海泡石矿物相转变的趋势。
The spatial variation of surface water chemical characteristics of Huanglong Ravine surface water is discussed upon field measurement and laboratory testing on water samples taken from main landscapes. The results show that the decrease of Ca^2+ and HCO^3- content in the surface water from upstream Zhuanhua spring to downstream Yinbin pool is the main reason for the decrease of specific conductance(Ec), The calcite saturation index(SIc) in surface water is 1.15~1.84, and the hydrochemistry type of surface water is Ca^2+-HCO^3-.In the two places the HCO^3- content in surface water does not drop but goes up. The reason is that the surface water at early stage flowed into the groundwater system in which CO2 was supplemented, so that the concentration of HCO3-emerged into surface water increases. According to the R-cluster analysis, the hydrochemistry parameters are divided into four categories: the first category is [SiO4^4-], [Mg^2+], [Ca^2+], [HCO^3-],pCO2, Ec, [Al^3+], the second category is [SO4^2-], and the third category is pH, SIc, [Cl]^-, the fourth is temperature(T). According to the Q-cluster analysis, surface water from the core scenic spots are divided into three categories: the first category is the surface water coming from upstream spring, the second category is the surface water coming from midstream and the third category is the surface water coming from the downstream underground water. Calcite and dolomite are supersaturated in surface water from upstream to downstream and calc-sinter is formed continuously. Calcium feldspar and Ca-montmorillonite are likely to be transformed into chrysotile and sepiolite.
作者
黄皓东
宋韬
严笑芸
安德军
闵世杰
党政
代群威
HUANG Haodong;SONG Tao;YAN Xiaoyun;AN Dejun;MIN Shijie;DANG Zheng;DAI Qunwei(School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Huanglong National Scenic Resort Administrative Bureau,Songpan Sichuan 623300,China)
出处
《化工矿物与加工》
CAS
2020年第8期43-47,共5页
Industrial Minerals & Processing
基金
国家自然科学基金面上项目(41877288)。
关键词
水化学特征
黄龙沟地表水
钙华
矿物饱和指数
系统聚类分析
hydrochemistry characteristics
surface water of Huanglong Ravine
calc-sinter
mineral saturation index
system cluster analysis
作者简介
黄皓东(1999-),男,四川绵阳人,主要研究方向为环境污染调控与生态修复,E-mail:hhdswust@163.com;通信作者:代群威(1978-),男,河南漯河人,教授,研究方向为环境污染调控与生态修复,E-mail:qw_dai@163.com。
