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在井下採鑛時,支撑採空區是一項主要的作業,這項作業所要達到的目的,就是耍保證採區内的囘採工作以及採區周圍的巷道安全和方便。支撑的任務是使採空區和通往採空區的巷道保持必要的形狀及規格,并防止採空區的兩帮及頂板在該採區囘採期間崩落。正確選擇回採時的支撑方法,有着非常重要的意義,首先,它决定工作安全與否,還决定採鑛成本、損失率、貧化率、開採强度,從而出决定採鑛塲的生產量等等。 採空區的支撑方法取决于許多因素,如鑛石與圍岩的物理機械性質、鑛體產狀、採鑛强度及其他。 採空區用鑛柱、充填料、採下鑛石(留鑛)和支柱等支撑,或同時採用上述方法中的某一種支撑。譬如,有時
In underground mining, supporting the goaf is a major operation and the objective of this operation is to ensure that the mining work in the mining area and the roadway around the mining area are safe and convenient. The task of propping up is to keep the mined-out area and the roadway leading to the mined-out area in the necessary shape and specifications, and to prevent the two gangs and the top-floor of the mined-out area from falling down during the mining period. The correct choice of the method of support when mining is very important. First, it determines the safety of work. It also determines the cost of mining, the loss rate, the depletion rate and the strength of mining so as to determine the production volume of mining 等 and so on. . The method of supporting the goaf depends on many factors, such as the physical and mechanical properties of the ore and the surrounding rock, the shape of the orebody, the strength of the mining and others. Goaf with pillars, stuffing, mining ore (mining) and pillars and other support, or at the same time using any one of the above methods of support. For example, sometimes