影响喀斯特地下水调蓄功能的因素的探讨

分析了多个亚动态反映出来的喀斯特管道级、裂隙级、孔隙级水哀减曲线中所占的比例,并指出了影响衰减曲线形态及衰减速度的因素及其对喀斯特地下水调蓄功能的影响。孔隙度提供了孔隙水空间,在诸因素中占有较重要的权重。构造断裂及破碎会加速孔隙水的衰减,使孔隙级水在衰减曲线上的比例减少,裂隙级水的比例增大。岩层产状也将直接影响孔隙级水的衰减速度。含泥岩层中的泥质成分可以使裂隙水在衰减过程中表现出孔隙水的特征。洞穴

A DISCUSSION ON THE FACTORS OF UNDERGROUND WATER REGULATION IN KARST AREAS

On the basis of the analysis of the corresponding proportion of the conduit flow, fissure flow and pore water flow in the recession curves, this paper discusses the controlling factors on the shape and the release velocity of the recession curve, and their influence on the function of karst underground water regulation.It is suggested that porosity plays an important role in controlling the recession curve. Faults and fractures will accelerate the recession of pore water,and make the pore water proportion reduce and the fissure water proportion increase in the recession curve.The stratigraphic occurrence will also influence the release velocity of pore water directly. Pelitic rock can make the fissure water act as the pore water in the release process. Karst caves speed up the release of karst underground water.Accordingly,because of the influence of multi-factors, the recession processes show a feature with two or three or four regime sub-areas.