浅析地质构造对宁乡市大成桥地区岩溶塌陷空间分布的影响

Analysis of the Effect of Geological Structure on the Spatial Distribution of Karst Collapse in Dachengqiao Area of Ningxiang City

宁乡市大成桥地区自1967年来产生第一个地面塌陷以来,至目前已产生塌陷千余处,给人们生产生活带来了许多问题,累计受灾群众近3万人,直接经济损失逾10亿元。文章对在大成桥区内收集到的野外数据和室内整理资料进行整理统计,分析构造地质对岩溶塌陷空间分布特征的影响,证明地质构造对岩溶塌陷的空间分布存在一定的影响,且以褶皱和断层的影响为主。这一结论为塌陷区的防治和地质研究提供科学依据。

Since the first ground collapse occurred in Dachengqiao area of Ningxiang city in 1967,there have been more than a thousand collapses,which have brought many problems and the huge economic losses to people's production and life.In this paper,the influence of structural geology on the spatial distribution characteristics of karst collapse is analyzed by sorting out the field data collected in the study area,which prove that the geological structure has no certain influence on the spatial distribution of karst collapse.It is mainly affected by folds and faults.This conclusion provides a scientific basis for the prevention and geological research of the subsidence area.