浅析铜陵地区地质构造对岩溶发育的影响

铜陵地区岩溶塌陷十分发育,先后有31处被列为岩溶塌陷地质灾害点,区内地质构造发育,对岩溶塌陷控制作用明显。文章在研究区域地质构造的基础上,对岩溶塌陷在地质构造上的分布形态及发育规律进行研究,重点探讨区内地质构造对岩溶发育的影响,研究可知:铜陵地区地质构造发育,主要为断裂和褶皱构造,其中北东、北北东向S型褶皱群对岩溶塌陷有明显控制作用。背(向)褶皱轴部由于拉张裂隙和张性断裂影响,岩体破碎,有利于地下水的溶蚀,岩溶作用较两翼更强烈,另一方面区内地貌格局背斜成山,向斜成谷,向斜地势较背斜低洼且开阔,地下水活动强烈,其塌陷分布较背斜密集;而断裂对塌陷的影响主要体现在对岩溶各种形态和发展的控制,尤其以北西、北东向张性或张扭性断裂带两侧岩溶塌陷最为发育。研究结果对城市规划、地质灾害防治具有重要意义。

A brief analysis of the influence of geological structure on karst development in tongling area

Tongling region of karst collapse are well-developed,there are 31 listed as geological ZaiHaiDian karst collapse,the geological structure development,obvious effect to control the karst collapse posts in the study area of geological structure on the basis of the distribution of karst collapse on the geological structure form and development pattern,the paper mainly discusses the geological structures on karst development,the influence of the study shows: tongling region geological structure development,mainly for the fracture and fold structure,and the north east north north east to S type fold group have significant control effect on karst collapse On the other hand,the geomorphology pattern in the region is anticline mountain formation,syncline valley formation,syncline topography is lower and open than anticline,groundwater activity is strong,and the collapse distribution is more dense than anticline. The influence of faults on karst collapse is mainly reflected in the control of various forms and development of karst,especially the research results on the development of karst collapse on both sides of North east tension or tension fault zone are of great significance for the prevention and control of geological disasters in urban planning.