【摘要】 借助压力数显仪及数字采集系统,对兖矿集团济三煤矿厚煤层综放开采的6301工作面的矿山压力进行了动态观测,得到了综采支架前、后柱的工作阻力和工作面前方支承压力随工作面推进的变化规律,为煤矿安全高效生产提供了依据。同时发现当工作面推进距离大约等于工作面长度时,支承压力趋于稳定,这为建立三维采场结构力学模型奠定了基础。更多还原

【Abstract】 By means of pressure data-display instruments and data collection system,the dynamic observation of abutment pressure in 6301 workface of Jisan colliery of Yankuang Group is carried out,the developing law of resistance force of support and abutment pressure in front of workface on pit coal seam is gained to provide basis for coal mining safety and efficiency.Meanwhile,it is found that the abutment pressure becomes stable when the advancing distance approximately equals to the length of working face,it also lay a solid foundation for setting up a 3D dynamic structural mechanics model.更多还原