Research on the Deformation Law of Soft Rock Roadway in High-Stress Area in an Underground Iron Mine
In this paper, aiming at the prevalent phenomena which is difficult to maintain the preparatory workings during mining in the weak and fragmentized ore body deep-lying, a systematical research on the deformation regularity of soft rock tunnel in artesian area, by using the methods of macroscopical investigation and spot monitoring of idiographic engineering geology in the eastern area of Xiao Guanzhuang Iron Mine is carried out, which provides a theoretical basis for ensuring a integrative scheme of maintenance the tunnel. The main results of this research are as follows: (l)The basic characters of the investigative tunnels deformation are progressive as well as having developmental stage with big deformation, asymmetry deformation of periphery and surface, obvious time effect and divergent deformation. (2)The deformations of the surface and the deep of the roadway surrounding rock are under the control of the stress field which they stay in, the existing period of the tunnel and the maintenance technology. (3)Combine with the actuality of Xiao Guanzhuang Iron Mine and the existing research findings, this research developed the integrative technology system of soft rock maintenance.
artesian area soft rock preparatory workings deformation regularity
SONG Weidong WANG Xin DU Jianhua WU Shan
School of civil and environmental engineering, University of Science and Technology Beijing, Beijing 100083, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
418-424
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）