【摘要】 天坑是我国学者朱学稳最早提出的,区别于普通漏斗、发育于大型暗河通道上的塌陷地形。根据小岩湾天坑形成的基础条件(沉积环境、气候与水文条件、地区地层条件以及该地的地下河条件)进行分析,并对其发育过程作了深入探讨,研究结果显示,小岩湾天坑完全符合天坑的定义,是一个发育完好并处于的成熟阶段的特大天坑。更多还原

【Abstract】 A tiankeng is a large collapse terrain which is developed form a passageway of a large underground river and differs from common collapse doline.This paper deals with geological,climate,and hydrological conditions of the formation of the Xiaoyanwan Tiankeng.The study results show that the Xiaoyanwan Tiankeng is a perfect and mature large tiankeng.更多还原