Development and application of a physical model for longwall coal face failure simulation
by Dezhong Kong; Guiyi Wu; Zhen Qian Ma; Yang Liu
International Journal of Mining and Mineral Engineering (IJMME), Vol. 8, No. 2, 2017

Abstract: Previous researches on longwall face stability have been done using theoretical analysis and numerical modelling, but a physical model including different face stability influencing factors has not been documented. In this research, we developed a face failure physical model with a consideration of face stability influencing factors such as stress on coal face, shield support pressure, face height and coal strength. The physical model consists of box, loading machine, shield support, stress monitoring system, displacement monitoring system and cracker detector. This physical model was used to investigate face stability at different conditions of the above mentioned influencing factors. The results show that: 1) stress on coal face and coal strength are mostly contributing to face failure; 2) face stability can be enhanced by increasing shield support pressure, decreasing face height and improving coal strength. Reasonable face height and shield support pressures are also determined to maintain face stability provided that stress on coal face and coal strength are kept constant.

Online publication date: Sun, 14-May-2017

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Mining and Mineral Engineering (IJMME):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com