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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Safety Research on Filling Collapse by Dumping Rocks along the Collapse
Author(s)
Yan Wang1, 2 and Weibo Sun1, 2
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DOI:10.17265/2162-5263/2016.11.004
Affiliation(s)
1. Key Laboratory of Western Mine Exploitation and Hazard Prevention, Ministry of Education, Xi’an 710054, China
2. School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
ABSTRACT
Because the large
collapse pits appeared in the surface of stoped-out area in the lower iron belt
of the southeast of Gongchangling iron mine, the sliding danger of side wall of
collapse pit threats seriously the production safety of open-pit of upper iron belt. The harm forms of collapse pit, especially the subsided harm of the
bottom of granular media are analyzed. The experiment shows the possibility
of the granular media forming the arch in the course of mining and analyzes the
continuity of bulk movement. Then it can be concluded that the granular media
of pit bottom will not suddenly subside in the process of downward shift.
Therefore, a technical scheme of drawing the open-pit stripping rock along the
collapse pit was proposed and the rock can be dumped along the collapse pit
trend and wall safely.
KEYWORDS
Collapse, fill, dispersion.
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