Self-advancing hydraulic powered support
Modern longwall mining employs hydraulic powered supports at the face area. The supports not only holds up the roof, pushes the face chain conveyor, and advances itself, but also provides a safe environment for all associated mining activities. Therefore its successful selection and application are the prerequisite for successful longwall mining. Furthermore, due to the large number of units required, the capital invested for the power support usually accounts for more than half of the initial capital for a longwall face. Therefore both from technical and economic points of view, the powered support is a very important piece of equipment in a long wall face.
自移式液壓支架
現(xiàn)代長壁工作面采煤已經(jīng)在開采區(qū)使用液壓支架。液壓支架不僅支撐頂板，推動(dòng)刮板輸送機(jī)工作面和自移式支架本身，而且還為相關(guān)的采煤設(shè)備提供一個(gè)安全的工作環(huán)境。因此正確的選擇和應(yīng)用液壓支架是長壁工作面采煤成功的先決條件。此外，由于對(duì)液壓支架需求數(shù)量很大，對(duì)液壓支架的投資經(jīng)常要占到長壁采煤工作面初始投資的一半以上。因此，從技術(shù)和經(jīng)濟(jì)兩方面的觀點(diǎn)看，液壓支架是長壁采煤工作面設(shè)備中十分重要的一部分。