Coal and gas outburst is one of the most harmful natural disaster in coal mine production. The frequency and scope of outburst are closely related to the metamorphic degree of coal seam, the depth of coal seam, and the complexity of geological structure. In general, the use of traditional along‐seam borehole or cross‐seam borehole can meet the needs of gas control. However, for the coal seams with high outburst risk, these methods fail to meet the demands of high‐yield and high‐efficiency coal recovery as well as safe, green, and economical coal mining. Although pressure‐relief gas extraction in the protective seam and coalbed methane (CBM) pre‐extraction can eliminate outburst risk in coal seams, these methods can hardly help realize the green development trend of coal and CBM co‐extraction because they cannot guarantee the current situation of highly mechanized mining. In this study, a three‐dimensional coal and CBM co‐extraction strategy was proposed. The strategy includes three levels of three‐dimensional gas prevention and control methods. The first level is the combination of ground and underground gas extraction methods, to achieve joint extraction of ground and underground gas. The second level is the full‐coverage extraction of the coal resources to be mined, to achieve joint extraction through upper and lower cross‐seam borehole and along‐seam borehole. The third level is the optimization of ground and underground extraction and utilization systems, to realize the full utilization of CBM and to achieve the goal of coal and CBM co‐extraction. The three‐dimensional gas prevention and control method constructs a new gas control model for single thick coal seams with high gas outburst risk and realizes the all‐round coordination and unity of different gas control methods spatially and temporally. The gas control strategy completely eliminates the high gas outburst risk of a single thick coal seam and has been successfully applied in Hudi Coal Mine. The application results verify that the method can effectively guarantee the operation safety during highly mechanized mining, realize extraction and full utilization of separate‐source gas, and provide guidance and direction for coal and CBM co‐extraction with similar extraction conditions.

中文翻译：

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高突出风险的单个厚煤层瓦斯突出防治策略-以沁水盆地虎底煤矿为例

煤与瓦斯突出是煤矿生产中最有害的自然灾害之一。突出的频率和范围与煤层的变质程度，煤层的深度以及地质构造的复杂性密切相关。通常，使用传统的沿煤层或跨煤层钻孔可以满足天然气控制的需求。但是，对于突出危险较大的煤层，这些方法不能满足高产，高效采煤，安全，绿色，经济采煤的要求。尽管保护层和煤层气（CBM）的预提取减压气体可以消除煤层的突出危险，这些方法无法保证高度机械化采矿的现状，因此无助于实现煤炭和煤层气共萃取的绿色发展趋势。在这项研究中，提出了三维煤和煤层气共萃取策略。该策略包括三个层面的三维气体预防和控制方法。第一级是地面和地下瓦斯抽采方法的结合，以实现地面和地下瓦斯的联合提取。第二层是要开采的煤炭资源的全覆盖开采，以实现通过上下跨煤层钻孔和沿煤层钻孔的联合开采。第三层是地面和地下开采和利用系统的优化，实现煤层气的充分利用，实现煤炭与煤层气共萃取的目标。三维瓦斯防治方法为瓦斯突出风险高的单一厚煤层构造了一种新的瓦斯控制模型，实现了不同瓦斯控制方法在空间和时间上的全方位协调统一。瓦斯控制策略完全消除了单一厚煤层的高瓦斯突出风险，并已成功地应用于呼di煤矿。应用结果表明，该方法可以有效地保证高度机械化开采的安全性，实现分离源气的提取和充分利用，并为相似开采条件下的煤与煤层气共萃取提供指导和指导。三维瓦斯防治方法为瓦斯突出风险高的单一厚煤层构造了一种新的瓦斯控制模型，实现了不同瓦斯控制方法在空间和时间上的全方位协调统一。瓦斯控制策略完全消除了单一厚煤层的高瓦斯突出风险，并已成功地应用于呼di煤矿。应用结果表明，该方法可以有效地保证高度机械化开采的安全性，实现分离源气的提取和充分利用，并为相似开采条件下的煤与煤层气共萃取提供指导和指导。三维瓦斯防治方法为瓦斯突出风险高的单一厚煤层构造了一种新的瓦斯控制模型，实现了不同瓦斯控制方法在空间和时间上的全方位协调统一。瓦斯控制策略完全消除了单一厚煤层的高瓦斯突出风险，并已成功地应用于呼di煤矿。应用结果表明，该方法可以有效地保证高度机械化开采的安全性，实现分离源气的提取和充分利用，并为相似开采条件下的煤与煤层气共萃取提供指导和指导。