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高家明, 潘俊锋, 杜涛涛, 闫耀东. 我国东北矿区冲击地压发生特征及防治现状[J]. 煤炭科学技术, 2021, 49(3): 49-56. DOI: 10.13199/j.cnki.cst.2021.03.005
引用本文: 高家明, 潘俊锋, 杜涛涛, 闫耀东. 我国东北矿区冲击地压发生特征及防治现状[J]. 煤炭科学技术, 2021, 49(3): 49-56. DOI: 10.13199/j.cnki.cst.2021.03.005
GAO Jiaming, PAN Junfeng, DU Taotao, YAN Yaodong. Characteristics and prevention and control status quo of rock burst in Northeastern Mining Area of China[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(3): 49-56. DOI: 10.13199/j.cnki.cst.2021.03.005
Citation: GAO Jiaming, PAN Junfeng, DU Taotao, YAN Yaodong. Characteristics and prevention and control status quo of rock burst in Northeastern Mining Area of China[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(3): 49-56. DOI: 10.13199/j.cnki.cst.2021.03.005

我国东北矿区冲击地压发生特征及防治现状

Characteristics and prevention and control status quo of rock burst in Northeastern Mining Area of China

  • 摘要: 东北三省是我国重要的煤炭生产基地,随着资源开采进入中后期,矿井开采深度加大,冲击地压事故频发,冲击地压防治工作面临巨大挑战。通过问卷调查和实地调研相结合的方法,分析我国东三省冲击地压目前的发生现状、矿井特征、发生特征、发生类型以及监测预警手段、防控防治方法等,剖析近年来典型冲击地压事故发生诱因,收集汇总矿方与监察部门反映及调研发现的共性问题并给出了建议。结果表明:东北矿区冲击地压发生历程可分为灾害初现、逐步增加、集中爆发和相对平稳4个阶段,矿区现有冲击地压矿井20座,具有煤层埋深大、赋存条件复杂、上覆厚硬顶板、地应力水平高等特征;冲击地压显现具有埋深较大,煤岩具有冲击倾向性和地质构造参与明显等共性特征,发生原因主要归结为上覆坚硬厚层顶板,开采布置不合理和地质构造活化等,近年来东北矿区典型冲击地压事故可划分为深部动静载叠加型和深部高静载加载型;东北矿区冲击地压防控工作开展较早,监测预警手段较全面且多种设备并行监测,但实际应用效率不高;现有冲击地压防治方法偏重局部解危,区域防范的重视与落实需进一步提升。

     

    Abstract: The three northeastern provinces are important coal production bases in China. As the development of resource mining enters in the middle and later stages, the mining depth increases, and the accidents of rock burst happen frequently. The prevention and control of rock burst are facing great challenges. Through a combination of questionnaire surveys and field investigations, this paper analyzed the current situation, mine characteristics, occurrence characteristics, occurrence types, monitoring and early warning means, prevention and control methods of rock burst in the three northeastern provinces of China, and analyzed the causes of typical rock burst accidents in recent years. The common problems reported by the mine and the supervision department were collected and summarized in the investigation and suggestions were given. The results show that the occurrence of rock bursts in the northeastern mining area can be divided into four stages: initial occurrence, gradual increase, concentrated eruption and relative stableness. There are 20 rock burst mines in northeastern mining area, which are characterized by deep coal seam depth, complex occurrence conditions, thick and hard roof and high in-situ stress level. The rock burst shows the common characteristics of large buried depth, coal rock with impact tendency and obvious geological structure participation. The main causes are hard and thick overlying roof, unreasonable mining layout and activation of geological structure. Typical rock burst accidents in northeastern mining areas in recent years can be divided into deep dynamic and static load superposition types and deep high static load types. The prevention and control of rock burst in northeastern mining area has been carried out earlier, and the monitoring and early warning methods are more comprehensive and multiple devices work simultaneously, but the actual application efficiency is not high. The existing prevention and control methods focus on partial relief, and the regional prevention and implementation level needs to be further improved.

     

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