煤炭工程 ›› 2023, Vol. 55 ›› Issue (10): 6-11.doi: 10. 11799/ ce202310002

• 设计技术 • 上一篇    下一篇

近全岩保护层开采煤矸井下分选及充填一体化技术研究与应用#br#

张创业,王晓川,刘庆军,黄煜萱,李振兴   

  1. 1. 平顶山天安煤业股份有限公司,河南 平顶山 467000
    2. 炼焦煤资源开发及综合利用国家重点实验室,河南 平顶山 467000
    3. 武汉大学 工业科学研究院,湖北 武汉 430072
  • 收稿日期:2023-02-01 修回日期:2023-04-11 出版日期:2023-10-20 发布日期:2025-04-08
  • 通讯作者: 王晓川 E-mail:xcw001@whu.edu.cn

Integrated technology and application research of full rock protection layer mining, coal gangue underground separation and filling of gangue

  • Received:2023-02-01 Revised:2023-04-11 Online:2023-10-20 Published:2025-04-08

摘要:

结合平煤十二矿深部突出矿井的地质特点, 针对己15突出煤层需要卸压开采但不具备常规保护层的问题, 提出了近全岩保护层开采理论, 将仅含煤线厚夹矸的全岩或近全岩层设计为保护层;针对高夹矸煤一次采全高设备损坏率高的难题, 通过硬岩辅助预裂爆破软化处理工艺实现了煤岩快速截割。其次, 鉴于近全岩保护层开采过程中矸石产量大的问题, 平煤十二矿结合现场实际工况合理高效地布置了煤矸井下分选系统, 研发了适用于千米深地煤矿井下洗选一体化设备, 实现了矿山灾害防治和矿山安全高效生产。最后, 采用阻化剂对矸石进行阻化处理, 研究了井下充填工艺与方法, 形成了深部突出矿井的安全、绿色开发模式, 对我国同类矿井的开发具有一定的参考价值。

关键词: 深部突出矿井, 近全岩保护层, 煤矸石处理, 绿色开采

Abstract:

This paper analyzed the major problems of protective layer mining in deep burst mines, and summarized the state of protective layer mining, underground coal gangue seperation technology and backfill coal mining technology. Taking the twelve mine of Ping Coal as an example, a closed-loop system of full rock protection layer mining unloading pressure - coal gangue underground separation - filling of gangue was proposed to develop the deep burst mine safely, efficiently and greenly. The concept of full rock protection layer mining was proposed, and the hard rock softening process is used to destroy the rock layer. The underground sorting system of coal gangue was established, and the integrated washing and sorting equipment was developed for underground coal mines at a depth of 1,000 meters. It also developed a new process of blocking and backfilling: the problem of ground collapse caused by mining in the quarry area has been effectively managed by blocking backfill of gangue. The independent and complete integrated system of full rock protection layer mining unloading pressure - coal gangue underground separation - filling of gangue was established in the twelve mine of Ping Coal, forming a safe and green development mode for deep burst mines and providing reference value to the development of similar mines in China.

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