The freezing drill bore project is the chiefly working procedure of a mine construction.Its quality could directly influence the periods of a mine construction.

• 冻结造孔工程是矿井建设当中的首要工序,其质量高低直接影响到矿井建设的周期,只有高质量完成每一个冻结孔施工,缩短冻结时间,才能使矿井早日建成投产;