贵州岩溶山区地下河径流路径分类探讨

地下河作为岩溶山区水资源的重要运移及储存场所,对于地下水开发利用和保护有着重大的意义。根据贵州岩溶地区地下河径流路径与地层产状、构造的关系,将地下河径流路径划分为走向型、倾向性(顺倾向型、逆倾向型、其它型)、断裂带型及褶皱轴线型(沿向斜轴线型、沿背斜轴线型)4种类型,并对研究区不同构造单元下地下河径流路径进行统计。结果表明:自遵义拱断-六盘水断陷-黔南台陷方向,地下河径流路径由走向型为主逐渐过渡为倾向型为主,且地下河平均长度及河网密度都有增大的趋势。

Discussion on classification of underground river runoff path in Karst mountainous areas of Guizhou Province

As an important transportation and storage way of water resources in karst mountainous areas, underground rivers have great significance for the utilization and protection of groundwater.According to the relationship between the underground river runoff path and stratigraphic formation and structure, this paper divides the underground river runoff path into four types, namely, the strike-slip type, the dip direction type (along dip direction type and reverse dip direction type, other type), the fault zone type and the fold axis type (along the synclinal axis line, along the anticlinal axis).We make statistics of runoff path of the underground river in different tectonic units in the study area.The results show that in the direction of Zunyi arch-Liupanshui fault depression-Qiannan platform collapse, the underground river runoff path has changed from the strike-slip type to the inclination type, and the average length and drainage density of the underground river has increased.