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在张集煤矿“2·18”特大突水灾害治理中,根据堵源期的具体条件,创立了错茬式延孔注浆的新工艺,经实施后效果显著.
In the Zhangji coal mine “2.18” special water inrush disaster management, according to the specific conditions of the plugging period, the creation of a new technology of stubble-type extension hole grouting, after the implementation of significant results.