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针对推进速率对工作面前方支承压力及分布规律的影响,采用黏弹性伯格模型构建本构方程,得到岩体内应力、应变与时间的关系,描述了开采速率对岩体前支承压力分布规律影响。以张集矿为工程背景,通过数值模拟分析,揭示了力学表达式与数值模拟结果的一致性,验证了支承压力力学表达式的可靠性。
Aiming at the influence of propulsion rate on supporting pressure and distribution in front of working face, the constitutive equation was built by using viscoelastic Berg model to get the relationship between stress and strain in rock mass and time, and the distribution of preloading pressure on rock mass was described influences. Taking Zhangji Mine as the engineering background, the consistency between the mechanical expression and the numerical simulation results is revealed through numerical simulation analysis, and the reliability of the bearing pressure mechanical expression is verified.