Coal Engineering ›› 2025, Vol. 57 ›› Issue (9): 76-83.doi: 10. 11799/ ce202509011

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Research on Key Technologies for Rapid Intelligent and Mechanized Anchor Excavation in Gas Outburst Mines

  

  • Received:2025-07-05 Revised:2025-08-20 Online:2025-09-10 Published:2025-10-13

Abstract:

Tunnel driving is a critical process in coal mine production. To address issues such as prolonged gas extraction time, slow cutting speed, and extended support operation duration in gassy and outburst-prone mines, this study proposes a new intelligent control technology for underground coal mine driving. The technology centers around a roadway boring and anchoring machine, integrating advanced gas pre-drainage, optimized support parameters, and interlocking control between gas concentration and cutting parameters. This approach significantly enhances both the efficiency and safety of tunnel driving. Practical application demonstrates that using directional long-hole drilling for gas pre-drainage reduces gas content at the driving face by 46.39%. By optimizing the roof support method and parameters according to the surrounding rock conditions, support density is reduced by 21.77% and support costs are lowered by 2.23%. Additionally, rational optimization of the collaborative workflow among supporting procedures increases cyclic driving efficiency by 33%. An interlocking control system between gas emission and the boring and anchoring machine has been established, achieving optimal matching of gas emission volume with the machine’s cutting speed. As a result, the monthly driving advance has more than doubled, while operational safety has been greatly improved. These outcomes achieve the goal of safe, efficient, and intelligent tunnel driving.

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