煤炭工程 ›› 2025, Vol. 57 ›› Issue (12): 56-62.doi: 10. 11799/ ce202512008

• 施工技术 • 上一篇    下一篇

烧变围岩裂隙发育分区及围岩控制技术研究

龙 岩,范钢伟,孙建峰,朱 鹏,朱亚强,岳 鑫   

  1. 1. 库车县榆树岭煤矿有限责任公司,新疆 库车 842000

    2. 中国矿业大学 矿业工程学院,江苏 徐州 221116

  • 收稿日期:2025-06-09 修回日期:2025-09-14 出版日期:2025-12-11 发布日期:2026-01-26
  • 通讯作者: 岳鑫 E-mail:yuexin@cumt.edu.cn

Study on Zoning Control Technology for Roadway Pyroclastic Surrounding Rock Based on Fracture Development Characteristics

  • Received:2025-06-09 Revised:2025-09-14 Online:2025-12-11 Published:2026-01-26
  • Contact: xin yue E-mail:yuexin@cumt.edu.cn

摘要:

烧变岩结构破碎、裂隙发育、富水性强,为解决西部浅埋煤层巷道烧变围岩控制问题,基于榆树岭煤矿+1710回风石门揭露下11煤层烧变岩区实际工程条件,通过实测分析、数值模拟等方法,构建巷道围岩裂隙密度分区体系,识别其灾变演化机制,并在此基础上提出针对性的分区控制对策与支护优化方案。研究结果表明:巷道揭露烧变围岩裂隙密度可划分为完整区、裂隙区与破碎区三类,对应支护体系分别以锚索加密、注浆强化与棚式组合支护为核心,实现了“支—固—护”一体化的分区控制模式。

关键词: 围岩控制, 烧变岩, 分区支护, 浅埋煤层, 数值模拟

Abstract:

Burnt rock is characterized by structural fragmentation, well-developed fractures, and strong water-rich properties, making it a key challenge for surrounding rock control in shallow-buried coal seam roadways in western China. Based on the actual engineering conditions of the burnt rock zone exposed in the No. 11 coal seam at the +1710 return airway of Yushuling Coal Mine, a fracture density-based zoning system for surrounding rock was established through field measurements and numerical simulation. The disaster evolution mechanism was identified, and a targeted zoning control strategy and optimized support scheme were proposed. The study shows that the fracture density of burnt rock can be divided into three categories: intact zone, fractured zone, and severely broken zone. Corresponding support systems are designed with cable bolt densification, grouting reinforcement, and combined steel-set support as the core measures, forming an integrated "support–reinforcement–protection" control model. This technical system effectively enhances surrounding rock stability, controls deformation, and ensures excavation safety, providing valuable guidance for the control of similarly weak and fractured rock roadways.

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