多因素影响下大采高开采高度分析

Analysis on mining height of large mining height under complex conditions

以新三矿10^(-2)号煤层综放开采中开采高度作为研究对象,分析了不同采高为3.5、4.5及5.5 m下工作面支架阻力、顶煤冒放规律、煤壁的稳定性展现出的不同规律,得到了随着采高的不断增加,工作面支架阻力也随之增加、放煤难易程度不断降低、采出率不断提升、煤壁稳定性下降。通过本文的分析,对类似综放开采下大采高开采高度的选择提供了依据。

No. 10^-2 coal seam fully mechanized mining of Xinsan Mine was taken as study object, the law of different mining height with 3.5,4.5 and 5.5 m of support resistance of working face, caving rule and stability of coal wall was analyzed, With the increase of mining height, the support resistance of working face and mining rate increased, coal mining difficulty and coal wall stability decreased, the technology provided reference for similar mines with large mining height.