The Study on Roadway Layout in Coordination of Mining Coal Seams Base on Failure of Floor Strata

Abstract:

In order to make sure the reasonable roadway layout in lower seam of close coal mining group coordination in Lijiahao coal mine, firstly, applying the theoretical analysis and geological radar detection to get the influence depth of mining from the up coal seam 2-2 to the floor is about 20m, the results show that the thickness of complete strata is about 15m, then determining to use the outward alternate entries in lower seam roadway by using theoretical analysis. At last, determining the distance of outward alternate entries is 12-14m by using FLAC3D numerical simulation software to simulate the change of stress and displacement in roof floor and two sides of roadway.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 1362-1374
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.1362
• Online since: February 2014
• Authors: Yong Zhang, Chun Lei Zhang*, Chun Chen Wei, Ya Dong Liu, Shi Qing Zhang, Jian Jian Zhao
• Keywords: Failure Depth of Floor, FLAC3D Numerical Simulation, Multi-Seam Mining, Roadway Layout

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