Large - Scale Unstable Collapse Mechanism of Filling Stope Its Environmental Grouting

DOI

10.2991/mseee-17.2017.72How to use a DOI?

Keywords

Filling Stope, Collapse region, Instability mechanism, Environmental reengineering

Abstract

In order to study the law of the destruction of stope collapse of unstable rock and ore filling body underground metal mine. Based on 3DEC discrete element program for the operating platform, taking a collapsed mine ore zone as the project background, and combined experiment of indoor physical mechanics, the dynamic evolution of the unstable rock in this area was studied, and the stope collapse failure slip pattern was revealed. The results show that the ore above instability collapsed stope amounted to sank parties about 2m, the two bodies of the filling body slipped to the mined-out area until the destruction under the action of extrusion. Secondly, Stope produced a total damage when the maximum shear strain zone in the collapse zone is fully penetrated, at this time, "U-shaped" instability of the collapse of the affected area is formed, resulting in the adjacent six stoves to become a dangerous area of mining. Lastly, according characteristics of filling body movement and mode of deformation, the general idea and idea of the reinforcement of the stope in the area of hidden danger is determined, and grouting Grouting reinforcement recommendations are proposed on this basis. The results can provide technical support for the subsequent mining stope in those collapse hazard areas.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chengyu Xie
AU  - Nan Jia
AU  - Hao Lu
AU  - Dongping Shi
AU  - Xinfeng Wang
PY  - 2017/08
DA  - 2017/08
TI  - Large - Scale Unstable Collapse Mechanism of Filling Stope Its Environmental Grouting
BT  - Proceedings of the 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017)
PB  - Atlantis Press
SP  - 388
EP  - 393
SN  - 2352-5401
UR  - https://doi.org/10.2991/mseee-17.2017.72
DO  - 10.2991/mseee-17.2017.72
ID  - Xie2017/08
ER  -