热带地理Issue(6)：794-803,10.
广州市典型岩溶塌陷区岩溶发育及影响因素
Karst Development and Influencing Factors in Typical Karst Collapse Districts of Guangzhou
摘要
Abstract
Geological disasters, karst development characteristics and karst controlling factors were studied in three typical karst collapse areas (Xiamao, Jinshazhou and Datansha) in Guangzhou City. Through field investigation in the three areas and collecting the related geological background information, by using methods such as statistical analysis and comparative analysis, the following understanding can be recognized. 1) The highest direct economic losses caused by geological disasters were in Jinshazhou and the largest amount of people affected by the disasters was in Datansha, while the impact of those in Xiamao was relatively small in view of the size and extent of the geological disasters;2) Covered limestone was the main material basis of the collapse and longitudinally karst development showed different characteristics in different areas. Karst development in Xiamao was in a strong degree, while that in the other two areas in medium-strong degree;3) Geological faults in the three areas developed commonly, faults controlled the direction of karst, and fractures cutting the rock crushing and increasing the contacting area between groundwater and soluble rock, as the role of karst groundwater was the dominant factor affecting the scale and size of karst. The better the conditions of hydrodynamic was, the more the karst development degree would be.关键词
岩溶塌陷/岩溶发育/夏茅/金沙洲/大坦沙Key words
karst collapse/karst development/Xiamao/Jinshazhou/Datansha分类
天文与地球科学引用本文复制引用
郑小战,郭宇,戴建玲,李晶晶,陈小月..广州市典型岩溶塌陷区岩溶发育及影响因素[J].热带地理,2014,(6):794-803,10.基金项目
中国地质科学院岩溶塌陷防治重点实验室开放研究基金项目 （）
