降水、河流径流量与开采对西安地区潜水流场影响分析

发布时间：2018-07-10 19:50

  本文选题：地下水流场 + 降水量　； 参考：《水文地质工程地质》2016年06期

【摘要】：为定量分析降水、径流和开采对西安地区潜水流场影响程度,应用小波变换、最小二乘相关分析等研究方法,对区域平均地下水位,水源地漏斗中心水位及漏斗面积与降水、径流和开采变化之间的特征进行了研究。结果表明:1986—2010年期间,平均地下水位随降水量的增大呈线性函数递增趋势,降水量每增加100 mm,平均水位上升0.77 m,漏斗中心水位变化速率随降水量的增大呈直线下降趋势,年均降水量每增加100 mm,漏斗中心水位上升0.7 m(灞河水源地)、0.27 m(沣皂河水源地)和0.14 m(渭滨水源地);1986—2010年期间,径流量每增加1×10~8m~3,区域平均水位上升0.9~1.98 m,漏斗中心水位上升0.32~2.36 m,漏斗面积减小0.019~13.2 km2;1998—2010年期间,地下水开采量每增加0.1×10~8m~3,区域平均水位降幅达1.14~5.37 m,水源地漏斗中心水位降幅0.94~5.76 m,漏斗面积扩大0.44~27 km2;关联度分析表明,降水、开采是西安地区潜水流场变异的主导因素。
[Abstract]:In order to quantitatively analyze the influence of precipitation, runoff and mining on the groundwater flow field in Xi'an area, the research methods of wavelet transform and least square correlation analysis are used to study the regional average groundwater level, the central water level and the funnel area of the funnel in the source area and the precipitation. The characteristics between runoff and mining changes were studied. The results show that the average groundwater level increases linearly with the increase of precipitation during 1986-2010. The average water level increases by 0.77 m for every 100 mm of precipitation, and the variation rate of central water level of funnel decreases linearly with the increase of precipitation. For every 100 mm annual precipitation, the central water level of the funnel rises by 0.7 m (Bahe water source) 0.27 m (Fengzaohe water source) and 0.14 m (Weibin water source) during the period 1986-2010. For every 1 脳 10 ~ (-1) m ~ (-1) increase of runoff, the regional average water level rises by 0.9 ~ 1.98 m, the central water level of funnel increases by 0.32 ~ 2.36 m, and the area of funnel decreases by 0.019 ~ (13. 2) km ~ (2) ~ (2) during the period 1998-2010. For every 0.1 脳 10 ~ (8) m ~ (3) increase of groundwater exploitation, the regional average water level decreases by 1.14 ~ 5.37 m, the central water level of the funnel decreases by 0.944 ~ 5.76 m, and the funnel area is increased by 0.44 ~ (27) km ~ (2). The correlation analysis shows that precipitation and exploitation are the leading factors for variation of groundwater flow field in Xi'an area.
【作者单位】： 长安大学环境科学与工程学院;长安大学旱区地下水文与生态效应教育部重点实验室;长安大学理学院;
【基金】：中国地质调查局地质调查项目(12120113004800) 陕西省自科基金(2014JM1030)
【分类号】：P641.2
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本文编号：2114488