Experimental Study On Mining Method Of Dry Backf Illing In Shanggong Gold Mine

Shanggong gold mine is in the Luoning county, Henan Province, It is a important mine in Henan. The ore body of the Shanggong gold mine is a erode deposit which is in the cincture of structure fragmentation. Being very complex mining technology condition, It is very difficult to mine. How to economic and safety mine the ore resource, it is a very important problem for the Shanggong gold mine, So It has a huge practice value to choice a right mining method and mine the gold ore.The mining method of dry backfilling can be used for limiting caving, subsidence and for supporting pillars and walls, Its use prevents falls and associated air blasts and facilitates recovery of ore. We decide to choice this method to mine the ore body of Shanggong gold mine.This paper expatiates the whole process of dry backfilling in Shanggong gold mine on the stope stress, stope stability, incising fashion, blasting and the measure to protect roof of stope, stoping technology etc. The theory of equating area exposed was being bring forward based on the mechanics model of batten cracking structure, the stability of each stope bed is being evaluated with this theory. The result of experiment indicates that this theory is correct and can be extend applied.This paper study on the control blasting of stope, the protecting of stope roof and the shoring etc., The result of experiment indicates that many indexes are logical and efficacious such as the stope structure, stoping technology, filling mode and the method of falling ore.In addition, The applications prove that the dry backfilling method is reasonable and reliable, it can be used in other mines as well.