论文部分内容阅读
内蒙古新安镇南分布有浅藏卤水,主要存储于第四系上更新统含水层。以往研究表明,该地区卤水为深层承压卤水沿断裂上涌成因,但实验结果和野外调查表明,该地区卤水的成因表现出多样化的特征:首先,Na/Br和Cl/Br均远大于海水的Na/Br,在1200～12000之间,Na/Cl均小于1,并且多数小于海水的0.87,因此该地区卤水属于第四系石盐溶滤成因并具备有变质卤水的特征;缘于该地区位于乌拉山潜伏隆起构造带上,断裂较多,发生过变质作用的深层承压水沿断裂上涌溶解岩盐;地下水流场显示,地下淡水径流自西向东,同时卤水矿化度的分布也为西低东高,并且低矿化度卤水区有明显向高矿化度卤水区突出的舌状特征,说明该地区接受淡水补给并对卤水区有显著的稀释作用。
There is a shallow reservoir of brine in the south of Xin’an, Inner Mongolia, which is mainly stored in the Pleistocene aquifer in Quaternary. Previous studies have shown that the brine in the area is the cause of the upwelling of the fractured brine along the deep confined brine. However, the experimental results and the field surveys show that the causes of the brine in the area show diversified characteristics: firstly, Na / Br and Cl / Br are much larger than Na / Br in seawater is between 1200 and 12000, Na / Cl is less than 1, and most of them are less than 0.87 of seawater. Therefore, the brine in this area belongs to Quaternary limestone leaching and has the characteristics of metamorphic brine; The area is located in the Wulashan lifted uplift tectonic belt, more faults, metamorphism of deep pressure water along the fault upwelling dissolved rock salt; groundwater flow field shows underground freshwater runoff from west to east, while the distribution of brine salinity Also low in the west and low in the east, and the low salinity brine areas have prominent tongue features that are clearly salient to high salinity brine areas, indicating that the area receives freshwater recharge and has a significant dilution of the brine area.