为降低滑移顶梁支架工作面的事故率,提高滑移顶梁支架的安全性,采取增强滑移顶梁支架易损部件的强度、在支架上焊接柱销、安装挡矸板并穿设钢丝绳、加设推移千斤顶方形栏等方法对滑移顶梁支架的支护方式及设计进行改进.结果表明:技改后采场顶底板移近量减小,最大顶板下沉量不超过100 mm,易损部件使用平均寿命增加到35 d以上,解决了滑移顶梁支架失稳及平衡力减小、采空区窜矸等问题,避免了落煤爆破造成顶梁变形断裂,保证了支架推移时千斤顶不上翘,大幅降低了开采成本,效果显著,整体提高了滑移顶梁支架的安全性.%In order to reduce the accident rate occurred in the slipping bar composite support coal mining face and to improve the safety of the slipping bar composite support,the enhanced strength of wear parts applied in slipping bar composite support,pins welded on the powered supports,steel cable installed through the coal rejects baffles applied in the powered supports,square fences added to the pushing jack and other methods were applied to improve the support mode and design of the slipping bar composite support.The results showed that after the technical improvement,the convergence value of the roof and floor in the coal mining face was reduced,the max roof subsidence value was not over 100 mm,the average service life of the wear parts applied was increased over 35 days,the stability lost and the balanced force reduced,the coal rejects run into the goaf and other problems were solved.Thus the roof beam deformation and failure caused by the blasting coal cutting was eliminated,no tail part raising of the pushing jack could be ensured when the powered support was pushing forward,the coal mining cost was highly reduced,the effect was obvious and the safety of the slipping bar composite support was totally improved.
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