煤矿动力灾害全时空演化数字孪生预警与灾害控制优化研究

Study on full spatiotemporal evolution digital twin early warning and disaster control optimization for coal mine dynamic disasters

  • 摘要: 随着我国煤炭开采向深部、高强度、智能化加速转型,煤矿动力灾害传统的泛防控模式面临决策粗放、响应滞后和靶点模糊等瓶颈问题。针对地质异常体动态表征困难、数据—机理深度融合困难、控制参数优化调节滞后等关键问题,提出基于数字孪生的动力灾害全时空预警与灾害控制优化方法。通过构建灾害地质体动态解析—灾害演化物理虚拟联合推演—灾害控制决策优化的技术体系,实现灾害防控从经验驱动向数据—模型双驱动模式的转变,提升了灾害演化的可视化表达和过程可追溯性。创新成果包括:① 提出大语言模型引导的地质知识抽取方法,攻克地质非结构化数据向三维地质模型智能转换的技术难题;② 建立变分几何约束动态网格化算法与边界条件—材料参数—本构模型三级优化架构,突破采动过程中融合现场监测的计算模型实时更新理论瓶颈;③ 构建融合自注意机制的卷积−记忆CNN-LSTM-Attention混合神经网络架构,揭示采动应力场时空演化与微震事件群的关联机制;④ 提出基于深度学习代理模型的灾害控制参数动态优化方法,实现钻孔卸压等控制措施的精准调控。本研究强调现场数据流、数值模型流与灾害控制流的耦合关系,通过持续的模型校准和状态预测,为灾害防控提供决策支持。研发的煤矿动力灾害数字孪生平台在典型灾害矿井开展现场部署与工程验证,形成地质异常辨识—灾变过程重构—防控方案迭代的闭环管控体系,解决了传统灾害防控决策中反馈滞后、信息割裂的问题,显著提升灾害演化过程的可视化程度与防控决策的时效性,有效提高矿井安全生产效率,为煤矿动力灾害智能防控提供新的技术思路与理论支撑,也为深部能源开发过程中的重大灾害防治提供数字化、智能化路径参考。

     

    Abstract: With the accelerated transformation of China’s coal mining industry toward deep, high-intensity, and intelligent development, the traditional “general prevention and control” model for coal mine dynamic disasters faces bottlenecks such as imprecise decision-making, delayed response, and unclear target identification. To address key challenges—including the difficulty of dynamic characterization of geological anomalies, limited integration between data and physical mechanisms, and delays in the optimization and adjustment of control parameters—this study proposes a full-time and spatial early warning and disaster control optimization method based on digital twins. By constructing a technical system of “disaster geologic body dynamic analysis — physical-virtual joint deduction of disaster evolution — disaster control decision-making optimization,” this research innovatively promotes a shift from experience-driven to “data–model” dual-driven disaster prevention and control. It enhances both the visualization of disaster evolution and the traceability of control processes. The main innovations of this study include: ① establishing a large language model-guided geological knowledge extraction method, which overcomes technical challenges in converting unstructured geological data into intelligent 3D geological models. ② proposing a variational geometry-constrained dynamic meshing algorithm and a three-stage optimization architecture of boundary conditions—material parameters—constitutive models, which breaks through theoretical bottlenecks in real-time model updating during mining operations while incorporating field monitoring data. ③ constructing a CNN–LSTM–Attention hybrid neural network architecture to reveal the correlation mechanism between the spatiotemporal evolution of the mining stress field and microseismic event clusters. ④ developing a dynamic optimization method for disaster control parameters based on deep learning surrogate models, enabling the precise regulation of measures such as pressure relief through borehole drilling. This study highlights the coupling among field data flow, numerical model flow, and disaster control flow, enabling forward-looking disaster prevention through continuous model calibration and predictive analysis. The “Coal Mine Power Disaster Digital Twin Platform” developed herein has been deployed and validated in typical disaster-prone mines, forming a closed-loop control framework of “geological anomaly identification → disaster process reconstruction → prevention and control scheme iteration.” This system effectively addresses issues of delayed feedback and fragmented information in conventional disaster prevention decision-making. It significantly improves the visualization of disaster evolution and the timeliness of control decisions, enhances the efficiency of mine safety operations, and provides new technological approaches and theoretical support for the intelligent prevention and control of coal mine dynamic disasters. Furthermore, it offers a digital and intelligent reference path for managing major hazards in the broader context of deep energy development.

     

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