Abstract: he considerable fluctuation of mined ore-grade and the difficulty of recovering low-grade ore are existing in eastern stope of Wulongquan Mine.It is unfavorable to guarantee the efficient and stable production due to the low ore blending efficiency and low accuracy in the stope.3D-Mine is used to construct an ore grade distribution digital model in eastern stope of Wulongquan Mine and contrast the sample data in the model with borehole database to verify the reliability about ore grade output result.The basic processes of this model in actual engineering are proposed,showing as：Delineate a mining scope in the model-count the ore grade and yield in the plan-divide blasting area-formulate ore blending scheme- field mining-ore blending.And then the model is applied to actual mining and ore blending work in eastern stope of Wulongquan Mine.The result indicates：it is convenient to count the ore yield and ore grade by using this model.The ore grade distribution digital model can effectively guide the propulsion of work surface,divide blasting area,count each exploded ore yield and ore grade,improve the efficiency and accuracy in field ore blending,promote the recovery of low-grade ore,ensure the stability of mined ore grade,and facilitate the high efficient and stable production in mine.

Key words: Wulongquan Mine, 3D-Mine, Ore grade distribution digital model, Ore blending