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岩溶又名喀斯特(Karst),是可溶性岩层(石灰岩、白云岩、石膏、岩盐)以被水溶解为主的化学溶蚀作用,并伴随以机械作用而形成沟槽、裂隙、洞穴,以及由于洞顶塌落而使地表产生陷穴等一系列现象和作用的总称。岩溶地区的地表形态特征有溶沟、溶槽、石芽和石林;漏斗、落水洞和竖井;溶蚀洼地和坡立谷等。岩溶地区的地下形态特征有溶蚀裂隙额及溶洞、暗河、石钟乳和石笋等。
Karst, also known as Karst, is a chemical dissolution that dissolves predominantly in dissolved rock formations (limestone, dolomite, gypsum, rock salt) and is accompanied by mechanical action to form trenches, fissures, caves, Collapse and surface subsidence and a series of phenomena and the role of the general term. Karst area of the surface morphology features such as dissolved ditch, solution tank, stone buds and stone forest; funnels, water holes and shafts; erosion depression and Po Li Valley. Karst area underground form features are dissolved fissures and cave, underground river, stalactites and stalagmites.