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一、深部开拓系统深部开拓之前先开采上部矿体。这时矿体的开拓系统由于新的矿山技术条件引起了各种变化。图1和2是克里沃罗格铁矿典型的深部开拓系统。第一期开拓设计深度为500米.但随着开采深度的增加,个别井筒处在底盘岩石移动带内,而且井筒设备的提升能力也不够。因此进行改建,以便提高生产能力和增加开采强度。改建时开拓系统的二期深度达1200米,並把井筒移到离矿床较远的地方。新井用园形断面,按装多绳提升机和载重为25—50吨的箕斗。
First, deep exploration system Deep exploration of the upper part of the ore before mining. At this time, the orebody development system caused various changes due to the new mine technical conditions. Figures 1 and 2 are typical deep opening systems at Krivoyargh Iron Mine. In the first phase, the design depth was 500 meters, but with the increase of mining depth, individual wellbores were located in the chassis rock movement belt and the capacity of wellbore equipment was not enough. Therefore, alterations have been made in order to increase production capacity and increase mining intensity. Reconstruction of the system to open up the second phase of the depth of 1,200 meters, and the wellbore moved far away from the deposit place. New hole with a circular section, equipped with multi-rope hoist and load 25-50 tons of skip.