新安镇南浅层地下水平面温度分布及影响因素

Horizontal Temperature Distribution and Impact Factors of Shallow Groundwater in South Xin'an Town

通过对内蒙古新安镇南浅层地下水水位和温度的测量,掌握了该地区的地下水流场及变温层内地下水的表层温度、平均温度,分析了这些指标的平面分布规律,探讨了地下水运动对地下水温度的影响机制。结果表明,总体上,研究区自西向东的地下水水平径流决定了研究区地下水温度西高东低的整体趋势,其中东北部为相对低温区,缘于该地区由北向南的水平径流;中部为相对高温区,缘于地下水自下而上的垂向径流。另外,这种分布特征还受太阳辐射的影响,这种影响的强弱由地下水的矿化度决定,矿化度相对较高的地区地下水温度越高,同时地下水位埋深参与这种影响,埋深浅的地区地下水温度较高。

The shallow groundwater level and temperature in South Xin＇an Town of Inner Mongolia were measured,the horizontal distribution laws of the groundwater flow field as well as the surface and average temperature in thermocline groundwater were analyzed,and the influence mechanism of groundwater flow on groundwater temperature was discussed.As indicated by the results,the horizontal groundwater runoff from west to east determined the general temperature decrease from west to east in the study area,the low groundwater temperature in northeast was resulted from horizontal flow from north to south,the high groundwater temperature in the middle area was resulted from the vertical flow from bottom to up.In addition,this distribution pattern was also influenced by solar radiation,but the influence degree was determined by the mineralization of groundwater,the higher the mineralization,the higher the groundwater temperature,the groundwater temperature was also influenced by depth,it decreased with the increasing depth.