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《Coal Science and Technology》 2001-06
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Regressive formula for released zone in mine square type roadway

LIU Gang 1, SONG Hong-wei 1, DUAN Xian-jun 2 (1 College of Architecture and Engineering, China University of Mining and Technology, Xuzhou 221008, China; 2 Henan Xuchang Xinlong Mining Corp. Ltd., Yuzhou 461670, China)  
With ANSYS value calculation program and simulation, the paper calculated the released zone of the mine square type roadway under different conditions. A released zone ( L p) of surrounding rock, ground pressure ( P ), surrounding rock strength ( S c) and L p= f(P, S c, K ) a relationship between roadway span height rate K were established with the regressive formula and were certified.
【CateGory Index】: TD325
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