摘要
地质体作为地质灾害的载体,控制地质灾害的类型、规模、方向、变形破坏的方式等。本文以黟县Y027公路溪下村段崩塌为例,从构造、节理裂隙、工程特性等方面分析总结了该崩塌的三种结构破坏模式,其中,节理裂隙的密度、产状,决定危岩体的块度、变形破坏的结构面等;构造褶皱等活动强度决定了岩体的破碎程度,也即灾害的规模;岩体的工程特性反映了岩土体的力学机制及吸水能力,也即抗滑能力的强度。地质体孕育了斜坡变形的主体,在人类工程活动及降雨等外力因素激发下,形成地质灾害。
The geological body as the carrier of geological disasters, controls the type, size, direction, deformation and failure way of geological disaster, etc. Based on Y027 Road Collapse in XixiaVillage of Yixian County, Anhui Province, the paper has analyzed and sum- marized three kinds of structure failure mode. The Density and occurrence of the Joint fissure determine the block size, deformation and failure structural planes o{ rock mass, etc. Activi- ty intensity of structural folds determines the degree of fragmentation of rock mass and the scale of the disaster. The engineering characteristics of rock mass reflect the mechanics mechanism and water absorbing capacity of rock and soil mass, which is the strength of the sliding resistance. The main body of slope deformation with the eological body , has formed the geological disasters which was stimulated by the human engineering activity and rainfall.
出处
《地质灾害与环境保护》
2015年第4期40-43,共4页
Journal of Geological Hazards and Environment Preservation
基金
<皖南黟县地质灾害详细调查>(编号:1212011140010)
关键词
地质灾害
地质体
响应机制
崩塌
黟县
geological disasters
geological body
response mechanism
collapse
YixianCounty
