Completed Freezing Technology of Mine Shaft and Skip Loading Chamber at Base Rock Section
YAN Shiwei
FENG Liandai
Abstract： A mine main shaft of Shila Wusu Mine had a designed net diameter of 9.4m and a full depth of 748.3m. The mine main shaft was frozen in a full depth and had a freezing depth of 760m. A comple ted freezing of the mine shaft and skip loading chamber was conducted and excellent effect was ob tained. The paper stated the determination method of the freezing depth,freezing wall thickness and average temperature of the freezing wall and provided the layout method of the freezing pipes and the site measured data of the completed freezing temperature field. The practices showed that under the controlled condition of the engineering quantity,with borehole drilling loads properly increased,a com pleted freezing curtain formed near the skip loading chamber would have great significances to a safety and rapid construction of the skip loading chamber.
Keywords：mine shaftskip loading chambercompleted freezingbase rockfreezing temperature field
Publication Date：2014-07-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 12-15 )