摘要
为评价东峡煤矿大倾角厚煤层37220-2综放工作面支架侧护板的适应性,通过对侧护板载荷进行现场监测,得到侧护板载荷特征。监测结果显示,大倾角厚煤层综放开采时,支架侧护板载荷通常在200 k N以下,工作面来压期间侧护板载荷高达1 000 k N。监测分析结果表明:大倾角煤层液压支架侧护板不仅起到密闭防止架间漏矸的作用,而能起到调架和防止支架下滑和倾倒的作用;37220-2工作面综放支架侧护板采用100 mm大缸径侧护千斤顶基本能有效地发挥调护作用。
In order to evaluate the suitability of the side guard plate in the hydraulic powered support of No. 37220-2 fully-mechanized top coal caving mining face in a high inclined thick seam of Dongxia Mine,with the site monitoring and measuring on the loading of the side guard plate,the loading features of the side guard plate were obtained. The monitoring and measuring results showed that during the fully mechanized top coal caving mining in the high inclined thick seam,the loading of the side guard plate in the powered support generally would be below 200 k N and the loading of the side guard plate would be 1 000 k N during the mine strata weighting period of the coal mining face. The monitoring and measuring analysis results showed that the side guard plate of the powered support in the high inclined seam would not only have a sealing function to prevent the rock waste leakage and but more important to have a function to adjust the powered support and to prevent the sliding and toppling of the powered support. A 100 mm large diameter side guard ram of the powered support in No. 37220-2 coal mining face could basically and effectively play the adjustment and guard function.
引文
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