大佛寺矿厚煤层综放工作面矿压显现规律现场监测分析

In-situ Monitoring Analysis on the Strata-pressure Behavior Law of Thick Seam Full-mechanized Caving Face in Dafosi Coal Mine

摘要: 采用顶底板移近量观测、活柱下缩量观测、支柱载荷量观测等手段对大佛寺矿厚煤层综采放顶煤40110工作面的矿山压力规律进行了现场监测分析。结果表明,40110工作面初次来压步距为91.8 m,周期来压步距平均为55.5 m,来压时最大动载荷系数达到1.58,整个工作面液压支架活柱平均下缩量为6.98 mm。

Abstract: This paper uses the means of the deformation amount between roof and floor observation, the descending amount of piston observation and the load amount of pillar observation to research the strata-pressure behavior laws of Dafosi 40110 full-mechanized caving face in thick seam with in-situ monitoring. The result shows that first weighting interval of 40110 face is 91.8 m, the periodic weighting length of 40110 face is 55.5 m, the maximum dynamic load coefficient is 1.58 and the average descending amount of the whole hydraulic support piston is 6.98 mm.