基于 UDEC 煤矿综放沿空留巷充填稳定性数值模拟研究

摘要

The gob - side entry driving is the key technical links of non pillar mining. This paper based on the gob - side entry driving experience of Coal Mine in China under the similar conditions,it collected the specific geological and technical conditions of production in a coal mine of Xishan Coal and Electricity in Shanxi Coking Coal Group,it built the reasonable UDEC analysis model,and it made ccurate data,and it determined reasonable filling body parameters. The practice results show that the established under the model of the stability of surrounding rock for the good,it correctly reflect the mine pressure appear along the empty left lane features,it has strong predictability,it ensure the safety in production of coal mine.%沿空留巷一直是无煤柱开采的关键技术环节。文章参照我国煤矿类似条件下沿空留巷的经验做法，收集了山西焦煤集团西山煤电某煤矿具体的地质资料和生产技术条件，在此基础上建立合理的 UDEC分析模型，进行精确的数据运算，确定了合理的充填体力学参数。实践结果表明：建立在该模型下的沿空留巷围岩稳定性好，正确反映了沿空留巷矿压显现特征，具有很强的可预见性，保证了煤矿安全生产。