Study On The Balance Of Water And Salt In Zhabuye Salt Lake, Tibet

Zhabuye Salt Lake is one of the world famous salt lake and has a huge development andresearch value because of a huge number of the inorganic mineral resources and biologicalresources in brine. Study on the change of water and salt in Salt Lake can determine thedynamic soil water law and predict the evolution trend of Salt Lake. Found out the annualvariation of the salt lake brine mineralization, then combined with meteorological factorsanalysis of the suitable conditions of mining brine resources in Salt Lake and improveutilization rate of Saline Lake. The main research results are:First, in view of previous not involved in Zhabuye Salt Lake brine low temperatureevaporation experiments, the low temperature evaporation of brine of Zhabuye Saline Lakewere carried out for supplemented the evaporation of Zhabuye Salt Lake experimental data.Second, using of time series decomposition method to study the trend of the salt lake waterlevel and the rule of periodic variation. The experiment of Salt Lake Brine low temperatureevaporation the salt mine crystallization sequence is rock salt, Glauber’s salt, borax, natron,sylvite, lithium carbonate. The experiments show that the mineral salts crystal precipitationsequence is same at the same temperature and is different under different temperature. Thesequence is strongly correlated with the different seasons of the brine. Different temperaturescrystalline mineral salts is different, when the high temperature separate out potassiumMirabilite, trona, and the low temperatures separate out Glauber’s salt, natron. The time seriesdecomposition method of fitting over the years the water level, predictable short-term the SaltLake Zhabuye water level upward trend, but to predict the trend of long-term changes in lakelevel also need more historical data to adjust the parameters to improve the predictionaccuracy.Third, with the application of statistical cluster analysis and correlation coefficientanalyze of the relationship between meteorological factors and the Saline Lake water level,water quality. The application of statistical methods to Saline Salt Lake South-North Lakewater level, salinity, and meteorological factors found that the lake water level, salinity andlake temperature higher degree.Fourth, by analyzing the factors and causes of the salt lakes balance study of water and salt balance, calculate the Salt Lake brine in salt and the average annual recharge of salt lakebrine. Analysis of the lake water recharge and discharge of salt lake region, the were notmonitored of lake water is calculated the amount of spring water recharge totaling7.40×10⁷m³. Salt lake brine evaporation experiments show that salt minerals crystallizedorder with seasonal brine smaller and mainly decided by the experimental temperature.Seasonal salt lake brine salinity balanced salt of lake salt, and combined water balanceanalysis to calculate the salt of lake is approximately6.27×10¹⁰kg per year, and the saltrecharge a total of approximately9.05×10⁷kg per year of north and south lake. This studyinvolves the Zhabuye Saline Lake meteorological, hydrological, brine evaporation experiment,study on Zhabuye Salt Lake water and salt from salt water changes, which development andutilization of mineral resources provides data support for the Zhabye Saline Lake.