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1 问题的提出 山丘区地下水资源量的计算一般采用排泄量法,即以总排泄量表征地下水资源量。排泄量的计算主要考虑以下几项:一、河川基流量;二、山前侧向流出量;三、未记入河川径流中的泉水出露量;四、地下水开采净消耗量;五、潜水蒸发量。考虑到山丘区的水文地质特点,在进行地下水资源量计算时,一般把潜水蒸发量忽略了,据研究计算,这样做欠妥。下面以鲁中南部分山丘区潜水蒸发量的计算为例说明。2 计算 (1)计算区域概况:本次研究范围包括泗水县山丘区、苍山县北部山丘区、山亭山丘区、临朐县南部山丘区、总面积3374.66Km~2。研究区属于中低山到低山丘陵地形,包括孔隙含水层、裂隙含水层、岩溶裂隙含水层等三种类型含水层,其中
1 PROBLEM PROBLEM The calculation of groundwater resources in the hill area generally adopts the method of discharge, that is, the amount of groundwater resources is represented by the total amount of drainage. The calculation of excretion is mainly based on the following items: (1) basal flow of the river; (2) lateral outflow at the front of the mountain; (3) spring water outflow not recorded in the river runoff; (4) net consumption of groundwater exploitation; (5) Evaporation. Taking into account the hydrogeological characteristics of the hills, the calculation of groundwater resources, the general neglect of the amount of evapotranspiration, according to research calculations, this is not properly done. The following is an example of the calculation of the amount of submersion evaporation in the hills in central and southern Lu. 2 Computation (1) Overview of the calculation area: The scope of the study includes the hillocks in Sishui County, the hills in the northern part of Cangshan County, the hilltops in Shanting County and the hills in the southern part of Lintao County, with a total area of 3374.66Km ~ 2. The research area belongs to middle and low mountain to hilly terrain, including three types of aquifer: aquifers, fissure aquifers, karst fissure aquifers, among which