大采高综采支架工作阻力综合分析与确定

Analysis of high seam mining shield working resistance

通过基于全波形声发射的岩石力学特性参数试验及分析,6.2m大采高综采支架工作阻力物理相似模拟,采用FLAC3D三维有限差分计算分析等方法和手段,分析工作面向前推进过程中上覆岩层的垮落、破断对工作面支架支护阻力的影响,并对模拟支架工作阻力进行了统计分析,确定了合理支护强度或合理支架工作阻力,为羊场湾煤矿6.2m大采高工作面的安全开采和支架工作阻力参数的确定提供了科学的依据。

The influences of the supports＇ working resistance due to the overlying strata breaking and falling during the coal caving had be analyzed based on the whole wave acoustic emission roek mechanics experiment, the physical simulation experiment of the supports＇ working resistance in 6.2 m high coal mining, and the numerical simulation with the FLAC^3D software. The statistical analysis of simulative supports＇ working resistance had be arranged and the adaptive supporting intensity or supports＇ resistance was given. The study provided the scientific foundations for confirming the parameters of the supports＇ resistance and safety exploitation with 6.2m high height seam mining in Yangchangwan coal mine.