【摘要】 <正> 徐宿岩溶地块地表水贫乏,却蕴藏着丰富的地下水。由于浅层孔隙水资源有限,并已受到不同程度的污染,裂隙岩溶水成为良好的水资源宝藏。随着工业不断发展,急需开发岩溶水,旧水源地也要求扩大开采量。本区水文地质条件复杂,地下水动力特征难于摸清,因而难于对资源量进行较恰当地评价。本文仅根据该区已有的开采长期观测及勘察资料,分析岩溶水资源的特征及与孔隙水的关系,并对开采资源量的近似计算方法进行阐述,虽属概略却实际可行。更多还原

【Abstract】 The Xuzhou-Suxian karst block is a water-bearing structure of semiconcealed type, consisting of composite anticlines and synclines.The karst water in this region is not only supplied by ground water from the exposed karst mountainous areas, but also has a close hydraulic connection with pore water of the overlying loose sediments through karst fensters.The water head is highly artesian.The karst block is composed of several hydrogeologic units delimited by complete natural boundaries. However, hydrogeological conditions seem to be quite complicated in the region because of the interwoven geologic structures plus the anisotropy in karst development, and of the features of dual water-bearing media.This has brought great difficulties in the evaluation of ground water resources. The paper takes the water source locality Xiangshan of Huaibei Municipality as an example, to set up a multi-element nonlinear stochastic mathematic model for the evaluation, by using long-term observation information available on ground water extraction and analyses of the water-level fluctuation graph obtained from water wells at the center of the cone of depression, with three correlated factors -precipitation rate, water yield and karst water table.Although this procedure is a somewhat probable one, it is simple and feasible. The possibility of expanding the exploitation of the water source is evaluated with the correlation formula of multilinear function!and the forecasting of water level is described as well.更多还原