一、前言石灰岩分布极为广泛,并且由于石灰岩具有可溶性以及往往含有丰富的地下水;因此,研究石灰岩喀斯特問題无論在水工建筑、給水或排水等水文地質工程地質实踐中均有着重大的意义。研究石灰岩喀斯特作用,溶解速度是其中重要的問題之一。影响喀斯特作用强度的因素是很多的,其中較重要的因素有:岩石的矿物成分与結構、可溶性岩石的厚度与产狀、岩层的裂隙与構造、地层渗透与降水逕流的条件、地下水的循环及其化学性質等。在 I. INTRODUCTION Limestone is widely distributed and because limestone is soluble and often contains abundant groundwater; therefore, studying the karst limestone problem is of great significance both in hydro-geological engineering such as hydraulic construction, water supply or drainage. Study of limestone karst effect, dissolution rate is one of the important issues. There are many factors that influence the intensity of karst. The most important factors are the mineral composition and structure of rock, the thickness and occurrence of soluble rock, the fissures and structures of rock, the conditions of formation infiltration and runoff, the circulation of groundwater and Its chemical properties and so on. in