Abstract:
Aiming at the technical problem of water rushing disaster in frozen hole of freezing shaft in the main shaft of Hujiahe Coal Mine, we proposed a new scheme of governing water rushing disaster in frozen hole for deep freezing shaft fundamentally. In order to guarantee the sidewall safety of main shaft in the implementation process, we taken FLAC software to study the reasonable location of annular water-intercepting roadway. The research showed that the best distance between the inner wall of annular water-intercepting roadway and the main shaft center was 10.75 m. And else, its own stability could meet the requirements and it had no effect on the shaft wall after the excavation and the support of annular water-intercepting roadway when its cross dimension was 2 meters by 2 meters. And the corresponding monitoring schemes were made about the main shaft wall and the annular water-intercepting roadway; the monitoring data showed that the main shaft wall had no deformation in the process of the excavation and the support of annular water-intercepting roadway and the surrounding rock of the annular water-intercepting roadway was stable. It indicated that the best distance being 10.75 meters between the inner wall of the annular water-intercepting roadway and the main shaft center was reasonable.