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目前国内煤矿综采工作面下上端头超前支护,一般采用单体支柱与铰接顶梁(或圆木)相配合的支护形式,即所谓“一梁三柱”或“一梁四柱”形式,不仅劳动强度大、安全性差,而且影响工作面回采速度。铁煤集团与科研院所合作,研制加工了超前支护液压支架,取代了原有单体木棚等超前支护形式,有效地控制了顶板下沉,避免了在原有支护形式下的挑顶、翻棚及频繁改打单体支柱等工作,提高了机械化程度,保证了安全生产。
At present, under the support of the upper end of the fully mechanized coal mining face in the domestic coal mines, the supporting form of the single pillar and the hinged top beam (or round wood) is generally adopted, that is, the so-called “three beams” or “one beam four columns” "Form, not only labor-intensive, poor security, but also affect the mining face mining speed. Iron Coal Group and research institutes, research and development ahead of the support hydraulic support, replacing the original single-wood shed and other forms of advanced support effectively control the roof sinking, to avoid the support of the original form of support Top, shed shedding and frequent change to play single props and other work to improve the degree of mechanization to ensure the safety in production.