摘要
以济南某采空区为例,基于FLAC^(3D)数值模拟程序对采空区的稳定性进行数值模拟分析,获得了铁矿开采后采空区的应力及位移分布规律,在采空区上方确定了一个长为65 m的地表沉降严重区。数值模拟结果与经验公式计算的结果基本吻合,证实该方案合理,说明了采用数值模拟分析采空区的稳定性是可行的。
It is of great significance to conduct goaf stability analysis near schools,shopping malls and other buildings.Taking a goaf in Jinan as an example,this paper conducts numerical simulation analysis on the stability of the goaf based on FLAC^(3D) numerical simulation program,obtains the distribution rules of stress and displacement of the goaf after iron ore mining,and determines a serious surface subsidence area with a length of 65 m above it.The simulation results are basically consistent with that of the empirical formula calculation,which proves that the scheme is reasonable and accurate,and can be referred to and combined with the numerical simulation program in the stability analysis and evaluation of goaf.
作者
李作栋
赵振华
袁辉
高奎锋
张兰新
王琳
李海涛
杜金亮
王妍
LI Zhuodong;ZHAO Zhenhua;YUAN Hui;GAO Kuifeng;ZHANG Lanxin;WANG Lin;LI Haitao;DU Jinliang;WANG Yan(China University of Mining and Technology,School of Resources and Geosciences,Jiangsu Xuzhou 221116,China;801 Hydrogeological Engineering Geological Brigade of Shandong Bureau of Geology and Mineral Resources Exploration and Development,Jinan 250014,China;Shandong Groundwater Environmental Protection and Remediation Engineering Technology Research Center,Jinan 250014,China)
出处
《城市地质》
2021年第2期199-203,共5页
Urban Geology
基金
国家自然科学基金项目(42042054)
国家自然科学基金项目(41302249)联合资助。
关键词
铁矿
采空区
地质灾害
地面塌陷
数值模拟
Iron mine
mined-out area
numerical modeling
geological disasters
surface collapse
