Microseismic monitoring and signal recognition constitute critical technologies for accurately assessing rockburst risks and ensuring the safe construction of underground rock engineering.This study developed a"S...Microseismic monitoring and signal recognition constitute critical technologies for accurately assessing rockburst risks and ensuring the safe construction of underground rock engineering.This study developed a"Surface+Underground"microseismic intelligent monitoring system to evaluate dynamic disaster risks during construction at the Beishan High-level Radioactive Waste Geological Disposal Laboratory in China.The datasets of four typical one-dimensional time-domain microseismic signals,including rock fracture,blasting,TBM tunneling,and drilling,were constructed,and the BO-CNN-LSTM model is developed to identify and classify these signals..Based on the classification results,the typical time-frequency domain characteristics of the four types of signals are analyzed.The classification results of BO-CNN-LSTM,CNN,LSTM and CNN-LSTM models show that the recognition accuracy of the four models is 98.0%,85.7%,66.7%and 91.0%,respectively.Among all types,the four models demonstrate the highest effectiveness in identifying rock fracture and borehole signals.The findings further confirm that the BO-CNN-LSTM model efficiently recognizes and extracts microseismic signal features,demonstrating superior performance and stability in the classification task.Finally,the study suggests several future research directions,particularly in the areas of raw signal denoising,and automation of feature extraction.展开更多
在总装拉动生产模式下,离散制造车间作为多厂(车间)生产模式的核心载体,其生产任务分散、设备布局灵活、生产过程复杂。然而,瓶颈单元在时间和空间维度上的动态漂移,成为制约生产效率与资源利用率提升的关键挑战。因此,研究离散车间的...在总装拉动生产模式下,离散制造车间作为多厂(车间)生产模式的核心载体,其生产任务分散、设备布局灵活、生产过程复杂。然而,瓶颈单元在时间和空间维度上的动态漂移,成为制约生产效率与资源利用率提升的关键挑战。因此,研究离散车间的瓶颈预测问题,对于提升多厂生产模式下的整体生产效率具有重要意义。为了准确预测瓶颈单元并监测瓶颈漂移趋势,提出了一种集成双重注意力机制的时空网络预测模型(Convolutional neural network-long short term memory-dual attention mechanism,CNN-LSTM-DAM)。首先,针对瓶颈单元的多属性耦合特性,构建了复合定义的瓶颈识别模型;其次,将识别出的历史疑似瓶颈数据作为辅助数据,输入融合CNN与空间注意力机制的空间特征感知器以及融合LSTM与状态注意力机制的时序特征感知器,进一步强化模型对生产序列数据中空间和时间维度信息的捕捉能力;最后,通过与门控循环单元(Gated recurrent unit,GRU)、双向长短期记忆网络(Bidirectional long short term memory,BiLSTM)等LSTM变体的消融试验对比,验证了所提模型在预测给定时延内瓶颈单元及瓶颈漂移趋势方面的准确性和有效性。展开更多
基金Project supported by the China Atomic Energy Authority(CAEA)through the Geological Disposal ProgramProjects(U24A20616,U24B2038)supported by the National Natural Science Foundation of ChinaProject(2025-05)supported by the Guangdong Provincial Water Conservancy Science and Technology Innovation Project,China。
摘要Microseismic monitoring and signal recognition constitute critical technologies for accurately assessing rockburst risks and ensuring the safe construction of underground rock engineering.This study developed a"Surface+Underground"microseismic intelligent monitoring system to evaluate dynamic disaster risks during construction at the Beishan High-level Radioactive Waste Geological Disposal Laboratory in China.The datasets of four typical one-dimensional time-domain microseismic signals,including rock fracture,blasting,TBM tunneling,and drilling,were constructed,and the BO-CNN-LSTM model is developed to identify and classify these signals..Based on the classification results,the typical time-frequency domain characteristics of the four types of signals are analyzed.The classification results of BO-CNN-LSTM,CNN,LSTM and CNN-LSTM models show that the recognition accuracy of the four models is 98.0%,85.7%,66.7%and 91.0%,respectively.Among all types,the four models demonstrate the highest effectiveness in identifying rock fracture and borehole signals.The findings further confirm that the BO-CNN-LSTM model efficiently recognizes and extracts microseismic signal features,demonstrating superior performance and stability in the classification task.Finally,the study suggests several future research directions,particularly in the areas of raw signal denoising,and automation of feature extraction.
摘要在总装拉动生产模式下,离散制造车间作为多厂(车间)生产模式的核心载体,其生产任务分散、设备布局灵活、生产过程复杂。然而,瓶颈单元在时间和空间维度上的动态漂移,成为制约生产效率与资源利用率提升的关键挑战。因此,研究离散车间的瓶颈预测问题,对于提升多厂生产模式下的整体生产效率具有重要意义。为了准确预测瓶颈单元并监测瓶颈漂移趋势,提出了一种集成双重注意力机制的时空网络预测模型(Convolutional neural network-long short term memory-dual attention mechanism,CNN-LSTM-DAM)。首先,针对瓶颈单元的多属性耦合特性,构建了复合定义的瓶颈识别模型;其次,将识别出的历史疑似瓶颈数据作为辅助数据,输入融合CNN与空间注意力机制的空间特征感知器以及融合LSTM与状态注意力机制的时序特征感知器,进一步强化模型对生产序列数据中空间和时间维度信息的捕捉能力;最后,通过与门控循环单元(Gated recurrent unit,GRU)、双向长短期记忆网络(Bidirectional long short term memory,BiLSTM)等LSTM变体的消融试验对比,验证了所提模型在预测给定时延内瓶颈单元及瓶颈漂移趋势方面的准确性和有效性。