Numerical Simulation Study on Height Evolution Laws of Overlying Gas Flow Paths with Discrete Element Method

DOI

10.2991/lemcs-15.2015.372How to use a DOI?

Keywords

Gas flow path; Mining induced fracture; Gas extraction; Key strata; Discrete element method

Abstract

In order to study height of overlying gas flow paths of a certain mine, Shanxi province, China, this paper studied the formation mechanism of overlying fractures induced by mining operation with the method of material mechanics, and the optimization arrangement of high-located borehole in working face through discrete element simulation software-UDEC and field gas extraction monitoring. The results showed that: the key stratum has controlling effects on the evolution of mining induced fractures, which depend on the development level of vertical fractures in the stratum. Instead of linearly develop, the height of mining induced fractures behaves a leaping develop with the advancing process of working face, and the height of development relates to the controlling height of the key stratum. The optimization height of borehole gas extraction is located in the third key stratum of roof, namely with 43-51m position in the roof.

Copyright

© 2015, 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  - Hui Guo
AU  - Ye Chen
AU  - Xiangdong Gao
AU  - Chuanqi Tao
PY  - 2015/07
DA  - 2015/07
TI  - Numerical Simulation Study on Height Evolution Laws of Overlying Gas Flow Paths with Discrete Element Method
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 1821
EP  - 1825
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.372
DO  - 10.2991/lemcs-15.2015.372
ID  - Guo2015/07
ER  -