Investigation on support pattern of a coal mine roadway under dynamic pressure of mining - a case study
by Z.Q. Ma; Y.D. Jiang; Y. Liu; W.S. Du; D.Z. Kong
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 18, No. 3/4, 2018

Abstract: This paper presented an investigation on different support patterns in roadways under dynamic pressure of mining. The field tests were conducted in no. 282 men-walking rise in Luling coal mine, China. The field monitoring showed the U-shaped steel support was not suitable in roadways under dynamic pressure. Then FLAC^2D software was adopted to investigate the effects of U-shaped steel support and rock bolt support. The findings from the numerical simulation indicated that rock bolt system is able to maintaining roadway stability. The rock bolts system including double layer bolts-mesh-shotcrete support and hollow grouting anchor cables was finally proposed to support the rise. Field monitoring showed that the roadway basically stabilised after repairing three month, the floor heave was 122 mm, the ribs convergence was reduced from 455 mm to 98 mm compared with the original support scheme. This case study is useful in enhancing engineer application of rock bolts to support roadways under dynamic pressure [Received: May 24, 2017; Accepted: April 12, 2018].

Online publication date: Tue, 10-Jul-2018

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 Oil, Gas and Coal Technology (IJOGCT):
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