Abstract:

Described the situation of water flowing through the freezing shaft lining in auxiliary shaft of YiLi’s First Core mine. In order to analyze the reason of streaming, measured the temperature along the freeze pipe of master circle. According to the heat-transfer law of a single frozen column, a mathematical model of single freezing soil pole was established in order to calculate transit rising temperature field. By using the modern software of the Maple, the formula is figured out with chart. The results showed that there is a stream from North to Southeast underground of auxiliary shaft, and freezing shaft lining was affected by unusually flowing of groundwater, which caused a “window” in the frozen wall. Use grouting to reduced the flow rate of groundwater, and reinforced freezing, resolved the incidents effectively affected by unusually flowing of groundwater, and ensured the security of freezing shaft construction .

Key words: temperature measurement along the freeze pipe, “window&rdquo, in the frozen wall, Underground streams, grouting