| Daxinganling area is located in the cold temperate zone,The ecological environment is good.There is a wide range of sheet continuous permafrost and island melting area permafrost.It is the only area in China that produces underground ice springs.The administrative division of Xilinji town belongs to Mohe City,Daxinganling District.It belongs to a large area of permafrost.It has high quality mineral water resources.The mineral content of the natural mineral water in the area is very rich,and it has the characteristics of rich water resources,wide distribution,easy development and so on.Based on the "detailed investigation project of mineral water resources in Xilinji Town,Mohe County,Heilongjiang Province",this paper studies the hydrogeochemical characteristics and water resources evaluation of Xilinji mineral spring.Based on the field work of hydrogeological investigation,geophysical exploration,hydrogeological drilling,pumping test,experimental test and groundwater dynamic monitoring in the natural mineral water distribution area of Xilinji,combined with the data of regional geology,hydrogeology and permafrost,this paper systematically analyzes the formation and occurrence characteristics,runoff compensation and drainage conditions and dynamic characteristics of groundwater in the study area.By using the statistical analysis software,hydrogeochemical diagram method and hydrogeochemical simulation software PHREEQC,the hydro geo chemical characteristics of mineral water are analyzed.And select the empirical formula of water inflow suitable for this study,calculate the allowable mining amount of mineral water,according to the calculation results,analyze the actual water inflow and the allowable mining amount,and complete the evaluation of the allowable mining amount of natural mineral water source in Xilinji.Based on the analysis of sensory index,limit index,limit index,pollutant index and microorganism requirement of mineral water samples,the health evaluation of mineral water was carried out.Based on the comprehensive analysis of the results obtained in this study,suggestions on the health protection of water sources and the rational development and utilization of mineral water resources are put forward(1)The mineral water mainly occurs in the structural fracture water of Jurassic Xiufeng Formation,which is directly controlled by the structural fracture zone and permafrost.The results of geophysical interpretation show that there is a NW trending fault fracture zone in the study area,which runs through the study area in a NW strike(2)The hydrochemical types in the study area are classified according to Piper trilinear map and shukarev classification.The hydrochemistry types of zkl-1 and zk1-4 sampling points belong to HCO3-Ca·Mg type.ZK1-3 sampling point belongs to HCO3-Ca·Na type.ZK1-2 sampling point belongs to HCO3-Na type.The chemical components of mineral water at the sampling points zk1-1,zk1-3,zk1-4 are mainly controlled by the weathering and dissolution of silicate rock and carbonate rock.Zkl-2 sampling point is affected by the interaction between the weathering dissolution of silicate rock and the dissolution of evaporite rock.(3)The content of relevant components in the sampling points of the study area has reached the national standard for drinking natural mineral water(GB8537-2008),among which zk1-1,zk 1-3 and zk1-4 are strontium type natural drinking mineral water,zk1-2 is lithium strontium composite type natural drinking mineral water;zk1-3,zk1-4 health index and delicious index are good,zk1-1 health index is good,taste is slightly poor,and zk1-2 sampling points health index is poor Good taste.(4)The q=f(s)relation curve is drawn according to the steady flow pumping test data of three times of drawdown.Through the judgment of pumping test curve,the empirical formula of water inflow is selected,and the linear regression equation method,the equilibrium error method and the least square method are used for calculation.The calculation results are compared with the pumping test,and it is determined that the allowable mining volume of mineral water in the whole area is 49.19×104m3/a,and the mining scale is medium-sized. |
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