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ZQ型矿用切顶支柱是煤科总院北京开采所最新设计的更新换代的支护产品,已由苏州煤矿机械厂投入批量生产。该产品用于顶板中等稳定,煤层倾角小于15°,全部冒落法或缓慢下沉法管理顶板的工作面。ZQF防倒防滑型切顶支柱已获国家专利,可适用煤层倾角15°～25°。中国地方煤矿总公司,于1991年11月14～15日在苏州组织召开了《ZQ型单程式切顶支柱》推广会。与会专家和用户代表一致认为,采用ZQ型矿用切顶支柱后取得了明显的技术经济效益。①立柱工作阻力高达1000～1200kN,提高了支护强度,尤其是提高了放顶线上的支护强度,有效地隔断了采空区和控顶区之间顶板的联系,维护了控顶区顶板的完整,有利于安全生产。②提高了
ZQ mining cut-top pillars are the newly-designed support products upgraded by Beijing Mining Bureau of Coal Bureau, and have been put into mass production from Suzhou Coal Mine Machinery Factory. The product is used for medium-stable roof, coal seam dip less than 15 °, all caving method or slow sinking method to manage the working face of roof. ZQF anti-slip non-slip top pillars have been patented national patent, suitable for seam angle 15 ° ~ 25 °. China Local Coal Mine Corporation held a promotion of “ZQ One-way Top Cutting Pillar” in Suzhou from November 14 to November 15, 1991. The participating experts and user representatives all agreed that the obvious technical and economic benefits have been achieved after using the ZQ mining cut-top pillars. ① column work resistance up to 1000 ~ 1200kN, improve the support strength, in particular, to improve the support strength of the caving line, effectively cut off the goaf and top control roof area between the top of the control of the roof area The roof is complete, conducive to safe production. ② improved