机井开采对月牙泉水位的影响及应对措施

通过对月牙泉周边区域的水量均衡计算范围、地下水水位监测孔的水位年内变化及牙泉水位下降过程的分析,明确对月牙泉水位产生影响的机井开采区,提出关闭合水村和鸣山村及敦煌城市自来水厂、七里镇自来水厂机井。共关闭机井155眼,减少年开采量1 297.8万/m^3,以应对月牙泉的水位因机井开采而持续下降的问题。

Groundwater Exploitation Influence on Crescent Lake Water Level and Its Countermeasures

Crescent Lake is the name of the Dunhuang Basin for years,due to excessive extraction of groundwater,which destroyed the dynamic balance of the district water resources and resulted in Crescent Lake groundwater levels declining.Through water balance calculation in the surrounding areas of the lake,changes of the monitoring holes of groundwater level in the years and analysis on process of Crescent lake water level declining,the article clarifies the range of the well for groundwater exploitation which influence on the lake water level. It puts forward to close up 155 wells of Water Works in Heshui,Mingshan Villages as well as Dunhuang and Qili town,reduce 12,978,000 m^3 of the exploitation volume in the year,can effectively solve the Crescent Lake water level declining issues caused by the wells exploitation.