成云海, 马衍坤, 胡兆锋, 陈加胜, 白金超. 综放采场外错布置区段巷道减冲机理与关键技术[J]. 煤炭学报, 2016, (3). DOI: 10.13225/j.cnki.jccs.2015.0465
引用本文: 成云海, 马衍坤, 胡兆锋, 陈加胜, 白金超. 综放采场外错布置区段巷道减冲机理与关键技术[J]. 煤炭学报, 2016, (3). DOI: 10.13225/j.cnki.jccs.2015.0465
CHENG Yun-hai, MA Yan-kun, HU Zhao-feng, CHEN Jia-sheng, BAI Jin-chao. Mechanism and key technologies of preventing rock burst by outward staggered entries arrangment in fully-mechanized caving mining face[J]. Journal of China Coal Society, 2016, (3). DOI: 10.13225/j.cnki.jccs.2015.0465
Citation: CHENG Yun-hai, MA Yan-kun, HU Zhao-feng, CHEN Jia-sheng, BAI Jin-chao. Mechanism and key technologies of preventing rock burst by outward staggered entries arrangment in fully-mechanized caving mining face[J]. Journal of China Coal Society, 2016, (3). DOI: 10.13225/j.cnki.jccs.2015.0465

综放采场外错布置区段巷道减冲机理与关键技术

Mechanism and key technologies of preventing rock burst by outward staggered entries arrangment in fully-mechanized caving mining face

  • 摘要: 针对宽、窄、无煤柱区段巷道防冲存在的问题,提出了沿空巷道外错合理位态减冲设计方法。通过建立覆岩结构模型、底板梁-柱模型,结合现场实测等,分析"应力场特征-减冲"关系、"卸压保护空间尺度-减冲"关系,揭示了外错布置减冲机理。研究成果在华丰煤矿埋深超千米综放采场实施,确定了外错布置沿空区段巷道的合理位态,同步构建了兼顾顶板治理、支护结构减冲、易发火控制、高效掘进及开采、合理验证与预警的系统关键技术,解决了以往沿空巷道防冲难度大、变形大难以控制、难以实现无煤柱开采等相关工程问题。

     

    Abstract: Through the analysis of the problems in rock burst prevention at wide,narrow,no coal pillar section,an opti- mization scheme was proposed that the roadway section near goaf was arranged as outward staggered entries to reduce the danger of rock burst. Based on the model of overlying rock structure,the relationship of “low pressure zone and re- duction danger for rock burst” and “pressure relief protection and reduction danger for rock burst” was determined, which revealed the mechanism of preventing rock burst with alternate exterior entry layout pattern. So the reasonable position,supporting standards and principles were determined. The research findings were then applied in the thick coal seam with large burial depth (over 1 km) and strong rock burst tendency over the fully-mechanized top-coal ca- ving face at Huafeng coal mine. The study built the key technological system which takes the broken roof control,lia- ble-to-ignition control,efficiency of driving and mining,and reasonable early-warning into consideration. In this way, the prevention difficulty of rock burst and control difficulty of the deformation in roadway driven along next goaf,and the mining without coal pillar with large burial depth ( over a thousand meters) can be realized and solved. The re- search can serve as a reference in similar conditions.

     

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