Gob-side entry is an area where it is difficult to prevent and control the frequent occurrence of rock burst. Based on “Longwall Mining with Split-level Gateways” (LMSG), this paper puts forward the technology of preventing rock burst by a new gob-side entry (NCPG). The abutment pressure distribution of LMSG shows that the stress peak of solid coal is lower than the conventional panel, and the width of the limit equilibrium zone is also reduced by a small percentage. After the narrow coal pillar gob-side entry has been excavated, the peak stress in solid coal increases, and the width of the limit equilibrium zone decreases, so the practical stress concentration increases. However, the NCPG located in areas of lower stress. The peak stress in solid coal of the NCPG does not increase, but the width of the limit equilibrium zone increases, so the practical stress concentration decreases. NCPC makes the concentrated stress transfer into the deep coal body and plays the role of pressure avoidance. Compared with the narrow coal pillar gob-side entry, the NCPG reduces the energy stored in coal and rock masses and increases the energy consumption. It has significantly improved the regionality, initiative, safety, and timeliness of rock burst prevention in deep high-stress coal seam mining.

中文翻译：

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煤层采空区负压巷道受力分析及防治岩爆的原理

采空区进入是难以预防和控制岩爆频繁发生的区域。基于“带分段网关的长壁开采”（LMSG），提出了一种通过新的采空区入口（NCPG）防止岩石破裂的技术。LMSG的基台压力分布表明，固态煤的应力峰值低于常规面板，极限平衡区的宽度也减小了很小的百分比。开挖狭窄的煤柱采空区侧入口后，固体煤中的峰值应力增加，极限平衡区的宽度减小，因此实际应力集中度增加。但是，NCPG位于应力较低的区域。NCPG固体煤的峰值应力不会增加，但极限平衡区的宽度会增加，因此实际应力集中减小。NCPC使集中的应力转移到深部煤体内，并起到了避压的作用。与狭窄的煤柱采空区入口相比，NCPG减少了存储在煤和岩体中的能量，并增加了能耗。它极大地改善了深部高应力煤层开采中岩爆的区域性，主动性，安全性和及时性。