煤炭工程 ›› 2024, Vol. 56 ›› Issue (7): 53-58.doi: 10.11799/ce202407009

• 施工技术 • 上一篇    下一篇

煤矿超长斜井破碎地层敞开式TBM掘进技术与应对方法研究

刘全辉,汪青仓,宋朝阳,等   

  1. 1. 陕西延长石油榆林可可盖煤业有限公司
    2. 陕西延长石油矿业有限责任公司
    3. 北京中煤矿山工程有限公司
  • 收稿日期:2023-09-03 修回日期:2024-01-29 出版日期:2024-07-20 发布日期:2024-07-20
  • 通讯作者: 宋朝阳 E-mail:szhaoyang123@126.com

Research on open TBM tunneling technology and measures in broken strata of su-per-long inclined shaft in coal mine

  • Received:2023-09-03 Revised:2024-01-29 Online:2024-07-20 Published:2024-07-20

摘要: TBM因施工安全、自动化程度高、掘进速度快等特点,已成为斜井机械化、自动化和 智能化建设的重要掘进装备。西部弱胶结地层围岩强度低、承载能力差,TBM在穿越破碎地层时发 生塌方、卡机、栽头和掘进偏斜等风险概率较高,为此开展了西部煤矿超长斜井破碎地层敞开式 TBM掘进技术与应对方法研究。基于可可盖煤矿斜井穿越地层和工程条件,制定了适应地层条件的 TBM掘进参数调整方案,提出了刀盘转速、撑靴压力、刀盘扭矩、推进速度等掘进参数的控制方 法,最大限度发挥了TBM高效掘进的性能;提出了斜井穿越破碎地层时,钢拱架、超前注浆、锚 网支护等综合围岩加固方法;优化了辅助作业设备的配置方案及掘进作业流程,形成了注浆加固、 围岩强支护、设备随掘协同的破碎地层安全施工技术,保障了可可盖煤矿斜井破碎地层敞开式TBM 的安全与快速掘进。

Abstract: Mine construction is the primary project of coal mining, and inclined shaft is one of the ways of mine development. Inclined shaft has the advantages of continuous main operation and no need for replacement. TBM has the characteris-tics of safe construction, high degree of automation and fast driving speed. TBM has become an important driving equipment for mechanization, automation and intelligent construction of inclined shaft engineering. The weakly con-solidated formation in western China has the characteristics of low strength of surrounding rock and poor bearing ca-pacity. It is easy for TBM to have such risks as cave-in, stuck machine, planting head and driving deviation when it passes through broken formation. Therefore, the research on open TBM driving technology and coping method of the broken stratum in the west coal mine is carried out. Based on the stratum and engineering conditions of the inclined shaft crossing in Kekegai Coal mine, the adjustment scheme of TBM driving parameters adapted to the stratum condi-tions is developed, and the control methods of cutter speed, boot pressure, cutter torque and advancing speed are put forward. This maximizes the performance of the TBM for efficient tunneling. The integrated surrounding rock rein-forcement methods such as steel arch, advance grouting and anchor mesh support are put forward when inclined shaft passes through broken stratum. The configuration scheme of auxiliary operation equipment and the flow of driving operation are optimized. The construction technology of broken stratum safety, which includes grouting reinforcement, strong support of surrounding rock and equipment coordination with excavation, guarantees the safety and fast excava-tion of the open TBM of broken stratum in Kekegai mine.

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