摘要
酒钢公司用水主要由三个地下水源地供给。依据勘察资料进行水均衡计算的基础上,建立了勘察区地下水二维流水量数学模拟模型,以近期和远期需水量为依据,对未来地下水位的变化趋势进行了预报。结果表明,各水源地总计按近期27.648×104m3/d开采至2030年,开采区最大水位降深小于设计降深,均已形成稳定的降落漏斗,由此引起的泉水量减少对酒泉西盆地生态环境基本无影响;总计按远期34.56×104m3/d开采至2030年,北大河、嘉峪关水源地开采井降深小于设计降深,自2011年漏斗已基本稳定,但黑山湖水源地开采漏斗中心最大水位降深分别为17.22m和23.60m,水位持续下降,漏斗不断扩大并与其它水源地形成区域性大降落漏斗,并且使现有的泉水大量衰减直至完全消失,对下游生态环境将产生巨大的负面影响。
The water for Jiuquan Iron ＆ Steel Company is supplied from three groundwater source sites. Based on the investigation data and the calculation of groundwater equilibrium, the numerical simulating model with twodimensional water yield is established. Through the base for the water needs in the near future and the far future, the variation trend of groundwater level in the future is forecasted by using the model. It is shown that the maximal decline depth of groundwater in the exploitation area is less than the designed decline depth and stable depression cone will be formed when the groundwater yield is 27.648×10^4m^3/d to the year 2030. If the groundwater yield is at 34.56 ×10^4m^3/d in the future, the decline depths of groundwater at Beida River and at Jiayuguan water source sites are less than the designed decline depths and the depression cone will be stable after the year 2011, but the maximal decline depths of central depression cones at Heishanhu water resource sites are 17.22m and 23.60m respectively which are larger than the designed decline depth. According to the sustaining decline of the groundwater, the depression cone is enlarging and forming the regional big depression cones after joining with the said water source sites above. The existing springs will fall off and disappear with the decreasing of water level, and the ecological environment of the downstream will be greatly affected.
出处
《工程勘察》
CSCD
北大核心
2006年第6期26-31,共6页
Geotechnical Investigation & Surveying
基金
甘肃省地矿局科学基金项目(200306S2-2)资助
关键词
水源地
地下水均衡
数值模拟
水位预报
groundwater source site
equilibrium of groundwater
numerical simulation
forecasting of groundwater level
