【摘要】 支护阻力和可缩量是巷道支架的主要参数，高阻和可缩是确保软岩巷道稳定性的关键．支架的实际工作阻力经常远低于理论承载能力，主要原因往往是支架与围岩之间存在空穴、支架受力条件恶化等严重抑制着巷道支架支承能力的发挥．实施支架壁后充填，使围岩－充填体－支架结构三者形成共同的力学承载体系，可大幅度提高支架的工作阻力，有效地控制围岩的强烈变形，这是改进软岩巷道支护的重大措施．更多还原

【Abstract】 Resistance and yieldable capacity are major parameters of roadway supports, and large resistance and yieldable capacity are the key to the stability of a softrock roadway. The reasons why the actual resistance of roadway supports is lower than its theoretical value are pointed out, and the effects of backfilling on the raise of support resistance and the control of large deformation of softrock roadway are discussed.更多还原