| Issue |
E3S Web Conf.
Volume 165, 2020
2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020)
|
|
|---|---|---|
| Article Number | 03037 | |
| Number of page(s) | 4 | |
| Section | Geology, Mapping, and Remote Sensing | |
| DOI | https://doi.org/10.1051/e3sconf/202016503037 | |
| Published online | 01 May 2020 | |
Study on support optimization of coal roadway with soft and broken surrounding rock
1 School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China
2 Shuangliu coal mine, Shanxi Fenxi Mining (Group) Co., Ltd, 033300 Shanxi, China
* Corresponding author: LLSLKD@163.com
With the increase of mining depth, the geological conditions tend to be complex. The problems of high mine pressure and soft and broken surrounding rock are more serious, and the difficulty of support is significantly increased. In this paper, the coal roadway with soft and broken surrounding rock in Shuangliu coal mine was taken as the research object, the model was established by FLAC3D software, the deformation and failure characteristics of the surrounding rock of the roadway were studied, the distribution of the stress and plastic area of the roadway were analyzed, and the problems of the original support scheme were analyzed. Combined with the field investigation and analysis, a variety of optimization schemes were proposed, and the optimal support scheme was obtained through modelling and calculation. The results show that the sidewall and corner of coal roadway are the key parts of support, and strengthening its support strength is conducive to improving the overall stability of the roadway. W-type steel band can be used to connect the rock bolt and anchor cable together to play the role of coupling support, so as to achieve the overall support effect.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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