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3D deformation effect and optimal excavated design of surface mine

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The three-dimensional (3D) deformation effect of the slope engineering under the step-by-step excavation for the Antaibao surface mine was analyzed using the FLAC3D technique. An optimal excavated scheme with a relatively steeper slope angle of 47° in-stead of 30° was successfully implemented at the west wall in the geological section 73200 of the mine area, where the 3D effect of the nonlinear large deformation of the slope was taken into account. Based on the above research conclusion, put forward the countermeasures of shortening mining length, excavating by different regions, timely foot backfilling to protect the excavated slope, and monitoring and feedback adjustment by studying the nonlinear effect. The results show that these countermeasures are effective in controlling maximum deformation and increasing the stability of the slope.

surface mineslope engineering3D deformation effectmining designFLAC3D

WANG Shu-ren、FENG Ji-li

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School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, China

School of Mechanics and Civil Engineering, China University of Mining and Technology Beijing, Beijing 100083, China

国家自然科学基金Natural Science Foundation of BeijingDoctor Foundation of Yanshan University

105720083063019B245

2009

10.1007s12404-009-0405-1

中国煤炭(英文版)
煤炭信息院

中国煤炭(英文版)

ISSN：1006-5318
年,卷(期)：2009.15(4)
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