摘要
提出了产生塌陷地质灾害的两个基本要素——塌陷势能以及失稳力学条件。应用塌陷势能概念分析了桃花山矿上部塌陷体的塌陷发展规律,采用基于太沙基理论的失稳力学条件计算了采空区顶板稳定性,同时结合有限元数值模拟方法建立矿山三维模型,计算矿山整体应力场,分析了下部采空区的稳定性。
Two basic factors to develop collapse of geological disasters,the collapse potential energy and unstable mechanical condition,are presented.Using the collapse potential energy analyzes the law of development of collapse body upper the Taohuashan Iron Mine,the stability of roofs are calculated based on the instability of the mechanical condition of the Terzaghi theory.Meanwhile,the stability of the mined-out area are analyzed according to the stress field of the mine which comes from a 3D numerical model.
出处
《化工矿物与加工》
CAS
北大核心
2012年第10期22-25,共4页
Industrial Minerals & Processing
关键词
塌陷
采空区
稳定性
数值模拟
surface collapse
mined-out area
stability
numerical simulation
