标题：Freezing Hole Annular Space Governance Technology of the Vertical Shaft
作者：Zhang, Wenquan; Yin, Zhaoyuan; Fang, Pei; Zhang, Ginbin; Sheng, Yuanyuan; Zhao, Kai
作者机构：[Zhang, Wenquan; Zhang, Ginbin; Sheng, Yuanyuan; Zhao, Kai] Shandong Univ Sci & Technol, Qingdao 266590, Shandong, Peoples R China.
会议名称：3rd International Workshop on Mine Hazards Prevention and Control
会议日期：NOV 19-21, 2013
来源：3RD INTERNATIONAL WORKSHOP ON MINE HAZARDS PREVENTION AND CONTROL
关键词：shaft; freezing hole annular space; water channel; governance
摘要：After the thaw of the frozen wall, the annular space of freezing holes and freezing wall of the shaft which constructed by full-freezing method could easily become a water channel which was a serious threat to the mine safety. The west air shaft of Qian Yingzi mine encountered this kind of situation. Through the investigation and analysis, we adopted "point to point splitting grouting method "to govern it and obtained a good effect on governance of the freezing hole annular space water channels.The effect of the governance is outstanding and provide scientific basis for the Wanbei Coal-electricity Group and the similar situation across the country.