Application Practice of Rapid Formation Technology of Cutting Groove in Lilou Iron Mine
Lilou Iron Mine adopts the sublevel drilling stage subsequent filling mining method,and the number of multi-layer cutting patio is large and the height is large.In order to safely and quickly form a cutting groove,by analyzing the current technical status of the mine,the construction method of large-diam-eter empty hole+medium-deep hole one-time blasting and rapid well completion is determined.The cy-R40 C type patio drilling rig is used to construct the large aperture empty hole,and the hydraulic drilling jumbo is used to construct the medium and deep hole expansion well,which has the advantages of high mechanization degree,safe operation and low labor intensity.In order to reduce the loose ore output of diesel scraper and increase the ore output of electric scraper at the concentrated ore output level,a new technology of bottom-up'reverse'grooving in cutting roadway blasting is proposed,which can pull through the cutting groove of the stope in a short time,which is helpful to quickly form the ability of large-scale ore falling and ore output.
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