Method for repairing large-burial-depth rock burst mine roadway
The invention relates to the technical field of coal mine roadway repairing, in particular to a method for repairing a large-burial-depth rock burst mine roadway. The method for repairing a large-burial-depth rock burst mine roadway comprises the following steps: supporting, thin-spraying sealing, d...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to the technical field of coal mine roadway repairing, in particular to a method for repairing a large-burial-depth rock burst mine roadway. The method for repairing a large-burial-depth rock burst mine roadway comprises the following steps: supporting, thin-spraying sealing, deep-hole grouting and re-spraying; wherein the thin-spraying sealing process is mainly used for filling shallow loose and broken surrounding rock to form a shallow anchor rod compression area built-up arch; deep-hole grouting is used for cementing deep loose surrounding rock to form a deep slurry diffusion reinforcing arch; and deep-hole grouting is used for ensuring that slurry has zero permeability so as to be tightly combined with the deep loose surrounding rock and firmly bonded with a thin-spraying sealing layer. The large particles in the slurry are not easy to settle, and the stability of the grouted arch-shaped structural surface is high; thin-spraying sealing and deep-hole groutingare matched to form a dou |
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