摘要
以武汉市烽火村岩溶地面塌陷为例,在对大量地质资料统计分析的基础上,将岩溶地面塌陷坑的发育形态与其形成机理相结合,借助室内大型物理模型试验研究和FLAC3D数值模拟研究结果,从分析砂层中扰动带和土洞发育及其破坏方式入手,通过对单一扰动带和土洞发育形态的分类,以及扰动带和土洞之间相互干扰和联合的分析,综合提出了一种复合型岩溶地面塌陷的形成机理。岩溶地面塌陷分为小型塌陷和大型塌陷两大类,小型塌陷是单个扰动带和土洞发育的结果,大型塌陷是多个扰动带和土洞共同发育、相继失稳的结果。
This paper analyses the development of the sand disturbance and hole formation as well as their influence on the karst surfaces taking the collapse that occurred in Fenghuo village of Wuhan City. It also studies the geological data and summarises the physical testing and numerical modeling. Base on the pit shape and collapse mechanism,it has put forward a mechanism of compound karst surface collapse. It explains the process of such kind of karst surface collapse reasonably.
出处
《地质科技情报》
CAS
CSCD
北大核心
2007年第1期96-100,共5页
Geological Science and Technology Information
