Key technology of pressure-relief gas extraction in low dynamic fracture zone of mining overburden in single ultra-thick coal seam

Key technology of pressure-relief gas extraction in low dynamic fracture zone of mining overburden in single ultra-thick coal seam

Different from the high gas and prominent mining areas in the middle east of China, the mining face of single thick and extra thick coal seam in the western mining area has a large amount of unloading gas and mainly originates from this coal seam, if the mining overburden unloading gas extraction dr...

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Bibliographic Details
Main Authors: Longyong SHU, Yuanlong ZHANG, Xin SONG, Yongpeng FAN, Yang LI
Format: Article
Language:zho
Published: Editorial Department of Coal Science and Technology 2025-07-01
Series:Meitan kexue jishu
Subjects:
extra-thick coal seam
dynamic fissure zone
directional long drilling
unloading gas
upper corners
Online Access:http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2024-1945
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