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Research on Development Laws of Freezing Wall Temperature Field in a Mine Auxiliary Shaft
Pages: 214-217
Year: Issue:  8
Journal: Safety in Coal Mines

Keyword:  多圈管冻结壁温度场数值模拟对数关系;
Abstract: 为了研究多圈管冻结壁温度场发展规律,通过某矿副井实测数据和FLAC3D数值模拟研究冻结壁温度场发展规律,并将模拟结果与实测数据对比分析.结果表明:测温孔温度实测值与模拟值具有相同的发展趋势,均随冻结时间呈对数关系下降,在结冰点处呈台阶状,最终均趋于稳定;冻结壁平均温度和有效厚度实测值与模拟值基本一致,在中圈孔交圈后,冻结壁有效厚度明显增大;主界面温度场曲线在冻结管处近似呈V形发展,主界面温度随冻结时间逐渐下降.
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