松散土体型地面塌陷成因分析及机理研究  

Research on genesis and mechanics of land collapse in incompact soil

作　　者：侯超群[1] 董满生[1] 逄焕平[1] 

机构地区：[1]合肥工业大学交通运输工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2013年第1期63-67,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(41002117)

摘　　要：文章结合近年来我国发生较为频繁的松散土体型地面塌陷展开研究,在明确其概念的基础上,分析造成此类地陷的内因和外因。分析结果表明,渗流造成松散土体中形成大孔隙骨架结构并以临界稳定状态潜于地下,在地面超载、振动及降水等外界干扰作用下造成临界稳定状态突然失稳,形成地表塌陷。Based on the analysis of land collapses in incompact soil which occurred frequently in recent years in China, the concept of land collapse in incompact soil is put forward, and its internal cause and external cause are analyzed. The following conclusions are got from the research, infiltration flow causes macro pore overhead structure in incompact soil, which exists under the ground in a critical sta- ble condition; and external effect such as overload on the land, vibration and rainfall can cause a sud- den collapse of the land surface.

关 键 词：地质灾害 地面塌陷 临界稳定状态 渗流 

分 类 号：U416.1[交通运输工程—道路与铁道工程]