中文摘要：

根据济宁三号煤矿六采区3煤顶板的水文地质条件，应用岩石破裂过程分析系统（RFPA^2D），模拟采动条件下顶板破裂的演化过程，并结合突水实例分析了顶板破坏与突水的关系．数值模拟结果表明，当工作面推进30m时，顶板发生初次来压，此后每推进约22m有1次周期来压，在开采140～150m时覆岩破裂高度达到最大并趋于稳定，模拟结果与现场实测值基本一致．六采区3个工作面出现20次涌水，一般在周期来压或每推进140～150m就产生顶板涌水，具有明显的周期性，表明工作面涌水与覆岩破坏密切相关．

英文摘要：

According to the hydrogeological conditions of No. 6 mining area of Jining Ⅲ coal mine, instable rock failure process of coal roof under mining was simulated by using the RFPA^2D（Rock Failure Process Analysis） and the relationship between rock failure of coal roof and water inrush was discussed. The numerical simulation results show that the first roof weighting occurs when 30 m of the coal seam is mined and the overlying strata of the seam begins breaking. Then the periodic roof weighting occurs about every 22 m. When the mined coal seam is up to 140-150 m long, the height of failure will reach the highest. This result corresponds to the in-situ measured value. During excavation in No. 6 mining area, 20 times of water-inrush from overlying sandstone have happened. Generally, groundwater bursts out from the overlying aquifers when the periodic weighting happens or when the working face is advanced for every 140-150 m. As a matter of fact, water inrush is obviously associated with the roof failure process.