Mechanical Response of Deep Stoped-Out Areas and Filling Effect under Dynamic Disturbance
详细信息
- 责任者：Tang Lizhong (School of Resources and Safety Engineering ; Central South University ; Changsha 410083 ; China) ; Zhou Jianxiong
- 刊名：Journal of Chengdu University of Technology
- 出版年：2012
- 卷期：39(6)
- 关键词：采空区 ; mined-out section ; 围岩稳定 ; adjoining rock stability ; 安徽 ; Anhui Province
- 页码：p.623-628
- 图表：2 illus., 2 tables, 18 refs.
- 分类号：1702
- issnNo：ISSN1671-9727
- isbnNo：CN51-1634/N
摘要
In order to analyze the stability of the stoped-out areas,the stress wave method is used to analyze the dynamic response of the stoped-out areas under lateral impact and the filling support effect and the finite difference program FLAC3D is used to simulate the dynamic characteristics under mining and blasting and the filling support effect of a typical stope of the Dongguashan copper mine in Tongling of Anhui Province.The results show that the rock stress field is disturbed through the spreading of the blasting seismic wave,the free surface’s vibration velocity is about twice that of the wall rock,the new plastic deformation appears and the particle displacement of the free surface increases.The application of fillings will inhibit these phenomena,besides,the insulating pillars are protected and the stability of stopes is improved.