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Study on Safety Control of Composite Roof in Deep Roadway Based on Energy Balance Theory

Author

Listed:
  • Zhengzheng Xie

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Nong Zhang

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Yuxin Yuan

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Guang Xu

    (WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Kalgoorlie, WA 6430, Australia)

  • Qun Wei

    (Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Improving the safety and stability of composite roof in deep roadway is the strong guarantee for safe mining and sustainable development of coal mines. With three roadways of different composite roofs in Hulusu Coal Mine and Menkeqing Coal Mine as the research background, this paper explores the mechanical properties and energy dissipation law of coal-rock structures with different height ratios from the perspective of energy release and dissipation through lab experiments. The results indicate that the key to the stability of coal-rock structures lies in maintaining relatively low dissipation energy. Based on experimental results and the energy balance theory, two support principles were put forward and applied to experimental roadways. The field monitoring results show that the anchoring force on different composite roof displays different characteristics, proving that the work done by the support can adjust timely to the energy release and conversion so as to improve the safety and stability of roadways with different composite roofs. This study provides a reference for the deformation control in deep roadways with composite roofs under similar conditions.

Suggested Citation

  • Zhengzheng Xie & Nong Zhang & Yuxin Yuan & Guang Xu & Qun Wei, 2019. "Study on Safety Control of Composite Roof in Deep Roadway Based on Energy Balance Theory," Sustainability, MDPI, vol. 11(13), pages 1-18, July.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:13:p:3688-:d:245822
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    References listed on IDEAS

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    1. Xingen Ma & Manchao He & Jiong Wang & Yubing Gao & Daoyong Zhu & Yuxing Liu, 2018. "Mine Strata Pressure Characteristics and Mechanisms in Gob-Side Entry Retention by Roof Cutting under Medium-Thick Coal Seam and Compound Roof Conditions," Energies, MDPI, vol. 11(10), pages 1-25, September.
    2. Zhengzheng Xie & Nong Zhang & Deyu Qian & Changliang Han & Yanpei An & Yang Wang, 2018. "Rapid Excavation and Stability Control of Deep Roadways for an Underground Coal Mine with High Production in Inner Mongolia," Sustainability, MDPI, vol. 10(4), pages 1-17, April.
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    Cited by:

    1. Xiaojun Zhu & Feng Zha & Hua Cheng & Liugen Zheng & Hui Liu & Wenshan Huang & Yu Yan & Liangjun Dai & Shenzhu Fang & Xiaoyu Yang, 2022. "Spatial Pattern Reconstruction of Water and Land Resources in Coal Mining Subsidence Areas within Urban Regions," Sustainability, MDPI, vol. 14(18), pages 1-24, September.
    2. Zhaowen Du & Shaojie Chen & Junbiao Ma & Zhongping Guo & Dawei Yin, 2020. "Gob-Side Entry Retaining Involving Bag Filling Material for Support Wall Construction," Sustainability, MDPI, vol. 12(16), pages 1-20, August.
    3. Changliang Han & Nong Zhang & Houqiang Yang & Qifeng Zhao & Kai Song, 2023. "Discontinuous Deformation Characteristics of Deep Buried Roadway Roofs and Linkage Control of Thick Layer Cross-Boundary Anchorage: A Case Study," Energies, MDPI, vol. 16(5), pages 1-16, February.
    4. Houqiang Yang & Changliang Han & Nong Zhang & Yuantian Sun & Dongjiang Pan & Changlun Sun, 2020. "Long High-Performance Sustainable Bolt Technology for the Deep Coal Roadway Roof: A Case Study," Sustainability, MDPI, vol. 12(4), pages 1-14, February.

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