Design of weak rock slope at BLI open pit lignite mine in Turkey
In this study,critical considerations and the results of a slope stability analysis of Sagirlar Sector (SA-5panel) of Orhaneli open pit lignite mine,which belongs to Bursa Lignite Establishment of the Turkish Coal Enterprises (TKI) are presented. The stability analyses were carded out in four different directions of the proposed pit both to decrease the stripping amount and to protect the probable damage to the adjesent Altintas village. Numerical modeling with 2D limit equilibrium analysis was employed to fred maximum safe slope angles in different parts of the SA-5 panel. In numerical analysis,both circular failure and noncircular failure options were considered. The southern and southwestern slopes which bounded by the basin border and contact zone of the seam were appear to be critical in the region. Thus a failure with a composite surface may occur and southern slopes may be safe with a safety berm and averall slope angle of 22 degree. The southwestern slopes of the panel adjacent to the Altintas Village should be safe with an overall slope angle of 24 degree and and should be extended to the fault. The northern slopes were appear to be less critical than the southern slopes. However,the height of them were much more than those in the southern part.
Slope stability numerical modeling limit equilibrium analysis open-pit lignite mine
L.Tutluo(g)lu C.Karpuz A.Ko(c)yi(g)it A.Kocal
Department of Mining Engineering,Middle East Technical University Ankara,TURKEY Department of of Geological Engineering,Middle East Technical University Ankara,TURKEY
国际会议
北京
英文
607-615
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）