【摘要】 根据对南桐矿务局砚石台煤矿4603直线长壁采煤法工作面的现场测试,推导了该工作面顶板的位态方程和临界工作阻力,并从能量释放的角度研究了工作面周期来压的预测指标。更多还原

【Abstract】 The authors,based on site surveying of No.4603 coal face with straightline longwall mining in Yanshitai Mine of Nantong Coal Mining Administration,derived the displacement state equation and critical yield load of roof and made study on prediction indications of periodical weight in coal face from the angle of energy release.更多还原