Analysis on Construction Monitoring and Measuring of Ground Freezing Method for Water Flooded Mine Shaft in the West of China

In order to accurately master the ground freezing development conditions and the freezing ground pressure affected to the above available mine shaft lin er during the ground freezing method construction process of a mine flooded shaft in the West of China, a real time monitoring and measuring was conducted in the brin e water temperature, ground freezing temperature and ground freezing pressure.With the preparation and analysis on the monitoring and measuring data, the variation I aws of the brine water temperature, ground freezing temperature and ground freezing pressure during the freezing process of the mine water flooded shaft were obtaine d.The analysis results showed that the combination of the measured temperature data from the outside and inside of the temperature measuring boreholes and the pres sure releasing boreholes could be better to master the development law of the ground freezing.The pressure releasing boreholes around the mine shaft would have a C ertain effect to reduce the frozen swelling pressure.When the ground freezing curtain of the mine shaft formed, with the measures to improve the brine water temperatur e and others, the ground freezing fast development could be controlled and the ground freezing pressure could be reduced and would be stable.The water drainage and excavation of the mine shaft was successully guided and the safety above mine shaft liner could be ensured.