基于文本挖掘的煤矿冲击地压事故致因分析

    Cause analysis of coal mine burst accident based on text mining

    • 摘要: 随着煤炭资源开采深度增加,冲击地压成为威胁煤矿安全生产的主要灾害之一,深度剖析冲击地压事故并挖掘事故致灾因素对冲击地压实现精准防控和科学管控极其重要。基于大数据运用文本挖掘技术对29起冲击地压事故致因进行挖掘,分析了冲击地压事故各致因重要性,研究了各致灾因子之间的关联性;并从地质环境、开采技术、人员管理3方面出发,分别针对投产前、生产中、结束生产后提出了全过程、多角度的冲击地压防治对策。结果表明:致灾因子中断层、坚硬厚层顶板、埋深大、煤层及其顶底板等具有冲击倾向性、应力叠加、地震等地质环境因素的TF-IDF值(词频−逆文本频率),采掘扰动、采空区、煤柱、孤岛工作面等开采技术因素的TF-IDF值,灾害认识不足、安全管理不严格、技术管理不到位、卸压措施不到位、劳动组织不合理等人员管理因素的TF-IDF值均较高,说明冲击地压事故发生是受地质环境、开采技术、人员管理等多种因素影响导致的;在冲击地压事故致因网络中,断层、采掘扰动、灾害认识不足、采空区、坚硬厚层顶板、埋深大、煤层及其顶底板具有冲击倾向性等致灾因子的节点尺寸较大,是造成冲击地压事故发生的关键致因;冲击地压事故的发生不只是单一致灾因子造成的,而是多种致灾因子耦合共同导致的。

       

      Abstract: With the increase of mining depth of coal resources, rock burst has become one of the main disasters threatening the safety production of coal mines. In-depth analysis of rock burst accidents and mining factors causing disasters are extremely important to achieve accurate prevention and control of rock burst and scientific management. Based on big data, text mining technology is used to excavate the causes of 29 rock burst accidents, analyze the importance of each cause of rock burst accidents, study the correlation between various disaster factors, from the three aspects of geological environment, mining technology and personnel management, the whole process and multi-angle rock burst prevention countermeasures are proposed respectively for the production before, during and after production. The results show that: the TF-IDF values (word frequency-inverse text frequency) of the disaster factors include fault, hard thick roof, large buried depth, geological environment factors such as impact tendency of coal seam and its roof and floor, stress superposition, earthquake, the TF-IDF values of mining disturbance, mining technology factors such as goaf, coal pillar and island working face, the TF-IDF valuesof personnel management factors such as lack of disaster awareness, lax safety management, inadequate technical management, inadequate pressure relief measures, and unreasonable labor organization are all high, indicating that the occurrence of rock burst accidents is caused by geological environment, mining technology, personnel management and other factors. In the network of causes of rock burst accidents, the key causes of rock burst accidents are fault, mining disturbance, lack of understanding of disaster, goaf, hard thick roof, large buried depth, coal seam and its roof and floor with impact tendency. The occurrence of rock burst accident is not only caused by a single disaster factor, but also caused by a variety of disaster factors.

       

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