【摘要】 以赵固一矿首采面二1煤顶板作为研究对象,分别应用公式法和岩石破裂过程分析系统(F-RFPA2D)确定在分层开采条件下首采面敷岩破坏的高度。并结合顶板破裂的模拟演化过程,为以后留设防水煤柱提供有效的技术参数。更多还原

【Abstract】 According to the hydro-geological conditions of firstly mined working face of No.1 mining area of Zhaogu 21 coalmine,the formulaic method and the RFPA2D(Rock Failure Process Analysis) is applied to confirm the rock failure height of coal roof under the condition of exploiting in layers and with considering the simulated evolvement process of rock failure,it can provide effective technical parameters for setting the waterproof pillar.更多还原