The anchoring or set to the artificial bottom hole of the separate injection pipe string has solved the creep of the pipe string resulted from the unstable water injection pressure.

分注管柱实施锚定或支撑到人工井底，克服了管柱因注水压力不平稳等原因造成的管柱蠕动现象；

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The effect of stress-releasing hole and water injection to the face on rock stress state around gateway driving face has been studied in this paper.

本文研究了卸载孔及向掌子面注水对煤巷掘进头岩石应力状态的影响。

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