2008•Coal science and technologyRequires access
Analysis on measurements of freezing pressure in deep thick clay strata
Dongwei Li
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Abstract
With the monitoring and measurement on the freezing pressure development law of the mine shaft in deep thick calcareous clay strata in Gubei Mine of Huainan,it was found that within the initial 15 days after the mine shaft concrete lined,the freezing pressure in different depths increased fast with obvious direction tendency.The temperature variation law of the mine shaft inner linear obtained after the mine shaft outer concrete linear made and the melt depth of the freezing wall of the mine shaft were the important factors directly related to the freezing pressure development.In combined with the monitoring and measurement data of the similar projects,a linear relationship of the average freezing pressure of the mine shaft with the depth variation was obtained.