覆岩裂隙带发育高度数值模拟和现场实测

摘要

Based on the mining technological conditions and rock mechanics parameters of Wusuotun Coal Mine, a numerical calculation model was established, numerical simulation was carried out on the failure of the plastic zone, the stress distribution and the change of vertical displacement in the overlying strata with the advance of the working face by using FLAC3D software, the stress criterion method was used to determine the height of water flowing fractured zone in overlying strata, and the failure height of overlying strata was verified with the empirical formula and through site measurement. The results showed that the use of numerical simulation to predict the failure height of overlying strata had higher accuracy and better superiority.%根据武所屯煤矿开采技术条件和岩石力学参数等，建立数值计算模型，运用数值模拟软件FLAC3D对上覆岩层随工作面推进时的塑性区破坏、应力分布，以及垂直位移变化情况进行数值模拟，采用应力判别法确定覆岩导水裂隙带高度，并采用经验公式法和现场实测对覆岩破坏高度进行了验证，结果表明：采用数值模拟的方法预测覆岩破坏高度具有较高的准确性和优越性。