砚北煤矿厚煤层综放面液压支架选型与应用
Selection and Application of Hydraulic Powered Support to Fully Mechanized Top Coal Caving Mining Face in Thick Seam of Yanbei Mine
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摘要: 通过对砚北煤矿2502采区开采过程中矿山压力显现情况的分析和计算,确定了1504采区综放工作面液压支架的工作阻力,并结合工作面掘进过程中的矿压显现情况,选择了能够满足现场实际需求的支架类别和结构形式。现工作面已推采1 200余m,在几次矿压显现中,震动能量达3.66×106 J,工作面支架和两巷道的超前支架均能满足可靠支护要求。Abstract: With the analysis and calculation on the conditions of the mine strata pressure behaviors occurred during the mining process of the No.2502 mining bloc k in Yanbei Mine, the work resistance of the hydraulic powered support applied to the fully mechanized coal mining face in No.1504 mining block was determined.In co mbination with the conditions of the mine strata pressure behaviors occurred during the driving process of the coal mining face, the type and structure mode of the hydr aulic powered support could be selected to meet the site actual requirements.When the coal mining face was advanced forward about 1 200 m, the seismic energy from the several mine strata pressure behaviors would reach at 3.66x106 J, the hydraulic powered supports applied to the coal mining face and the pilot supports applied to t he two gateways all could meet the reliable support requirements.