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The characteristics and main influencing factors affecting coal and gas outbursts in Chinese Pingdingshan mining region

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  • Cheng Zhai

    (China University of Mining and Technology
    State Key Laboratory of Coal Resources and Safe Mining)

  • Xianwei Xiang

    (China University of Mining and Technology
    State Key Laboratory of Coal Resources and Safe Mining)

  • Jizhao Xu

    (China University of Mining and Technology
    State Key Laboratory of Coal Resources and Safe Mining)

  • Shiliang Wu

    (China University of Mining and Technology
    State Key Laboratory of Coal Resources and Safe Mining)

Abstract

The Pingdingshan mining region in China has witnessed severe coal and gas outbursts. A total of 153 coal and gas outburst accidents have occurred in this mining region. As the mining depth progressively increase, mining conditions in the region have become more complex, and gas outburst disasters have become more severe. This research statistically analyzed the 153 outburst accidents in the Pingdingshan mining region. Additionally, based on historical data and typical outburst cases, the characteristics and primary factors affecting coal and gas outbursts within the mining region were obtained. The results indicate that the outburst accidents in this mining region were primary influenced by the following factors: geological structure, mining depth, seam thickness, the lithology of roof and floor, and the mode of operation. As mining depth increased, the geotechnical environment and the mechanical properties of coal varied. Moreover, under the combined action of high stresses and considerable amounts of high-pressure gas accumulated within the coal and rock mass, the structures of both coal seam and rock strata in the mining faces or roadways were destroyed instantly. Therefore, coal and gas outbursts occurred. The outburst intensity increased significantly when mining depth is greater than 500 m. Coal and gas outburst accidents happened most frequently and severely in regions with geological structures containing such features as faults and folds due to the increasing gas pressure and sharply rising ground stress. Moreover, variation of seam thickness and the lithology of the roof and floor of the seam have significant control effect on coal and gas outburst. In addition, engineering disturbance was an external factor inducing coal and gas outbursts. For example, blasting and coal cutting caused changes in the stress state in the coal at the end of excavation roadways and mining faces.

Suggested Citation

  • Cheng Zhai & Xianwei Xiang & Jizhao Xu & Shiliang Wu, 2016. "The characteristics and main influencing factors affecting coal and gas outbursts in Chinese Pingdingshan mining region," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(1), pages 507-530, May.
    • Handle: RePEc:spr:nathaz:v:82:y:2016:i:1:d:10.1007_s11069-016-2195-2
    DOI: 10.1007/s11069-016-2195-2
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    References listed on IDEAS

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    1. Wei Yang & Bai-quan Lin & Jiang-tao Xu, 2014. "Gas outburst affected by original rock stress direction," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 72(2), pages 1063-1074, June.
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    4. Xiangjun Chen & Yuanping Cheng, 2015. "Influence of the injected water on gas outburst disasters in coal mine," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 76(2), pages 1093-1109, March.
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    Cited by:

    1. Wen, Hu & Yan, Li & Jin, Yongfei & Wang, Zhipeng & Guo, Jun & Deng, Jun, 2023. "Coalbed methane concentration prediction and early-warning in fully mechanized mining face based on deep learning," Energy, Elsevier, vol. 264(C).
    2. Xiong Ding & Cheng Zhai & Jizhao Xu & Xu Yu & Yong Sun, 2022. "Study on Coal Seepage Characteristics and Secondary Enhanced Gas Extraction Technology under Dual Stress Disturbance," Sustainability, MDPI, vol. 14(22), pages 1-18, November.
    3. Jilin Wang & Ming Li & Shaochun Xu & Zhenghui Qu & Bo Jiang, 2018. "Simulation of Ground Stress Field and Advanced Prediction of Gas Outburst Risks in the Non-Mining Area of Xinjing Mine, China," Energies, MDPI, vol. 11(5), pages 1-16, May.
    4. Junhong Si & Lin Li & Jianwei Cheng & Yiqiao Wang & Wei Hu & Tan Li & Zequan Li, 2021. "Characteristics of Airflow Reversal of Excavation Roadway after a Coal and Gas Outburst Accident," Energies, MDPI, vol. 14(12), pages 1-13, June.
    5. Junqi Zhu & Li Yang & Xue Wang & Haotian Zheng & Mengdi Gu & Shanshan Li & Xin Fang, 2022. "Risk Assessment of Deep Coal and Gas Outbursts Based on IQPSO-SVM," IJERPH, MDPI, vol. 19(19), pages 1-22, October.
    6. Weiyao Guo & Qingheng Gu & Yunliang Tan & Shanchao Hu, 2019. "Case Studies of Rock Bursts in Tectonic Areas with Facies Change," Energies, MDPI, vol. 12(7), pages 1-11, April.
    7. Haitao Sun & Jie Cao & Minghui Li & Xusheng Zhao & Linchao Dai & Dongling Sun & Bo Wang & Boning Zhai, 2018. "Experimental Research on the Impactive Dynamic Effect of Gas-Pulverized Coal of Coal and Gas Outburst," Energies, MDPI, vol. 11(4), pages 1-15, March.
    8. Guorui Zhang & Enyuan Wang & Zhonghui Li & Ben Qin, 2022. "Risk assessment of coal and gas outburst in driving face based on finite interval cloud model," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 110(3), pages 1969-1995, February.
    9. Ying Chen & Zhiwen Wang & Qianjia Hui & Zhaoju Zhang & Zikai Zhang & Bingjie Huo & Yang Chen & Jinliang Liu, 2023. "Influence of Gas Pressure on the Failure Mechanism of Coal-like Burst-Prone Briquette and the Subsequent Geological Dynamic Disasters," Sustainability, MDPI, vol. 15(10), pages 1-13, May.

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