一、前言在华北地区,寒武奥陶纪石灰岩是重要的含水岩层,而以山西高原分布最广,山西高原寒武奥陶纪石灰岩厚度达一千米左右,喀斯特发育。由于寒武奥陶系喀斯特裂隙水丰富,往往有大型泉水出露,因此,不少城市如太原、临汾、朔县、洪赵等,目前都正在或是计划直接利用喀斯特泉水作为供水水源;不少城市如阳泉、长治、晋城、介休等也 I. INTRODUCTION In North China, Ordovician limestone in Cambrian is an important water-bearing rock formation and the most widely distributed in the Shanxi Plateau. The thickness of Ordovician limestone in the Cambrian of Shanxi Plateau is about one kilometer, with karst development. As the Cambrian Ordovician karst fissure water is abundant in the Cambrian, there are often large-scale springs exposed. Therefore, many cities such as Taiyuan, Linfen, Shuo County and Hongzhao are now planning to directly use Karst spring water as their source of water supply; Fewer cities such as Yangquan, Changzhi, Jincheng, Jiexiu also