白堊系含水軟巖地層凍結與強制解凍規(guī)律研究
發(fā)布時間:2018-10-09 18:57
【摘要】:本文以室內試驗、理論分析、數值分析和現場實測為研究手段,對白堊系含水軟巖地層凍結與強制解凍理論與應用進行了較為深入、系統(tǒng)的研究。 論文研究了從-5℃到-15℃條件下的白堊系地層的凍土力學和熱物理性能。建立了各階段的溫度場數學模型和相應的熱傳導控制方程以及凍結壁凍融溫度場計算模型,給出了凍結壁形成和強制解凍融化過程及規(guī)律;分析了影響凍結壁凍融溫度場的各個因素及其對溫度場的顯著性影響,同時對凍結和強制解凍溫度場進行了多因素回歸分析。通過凍結與強制解凍交互作用下的溫度場、凍結壁凍脹以及井壁的受力變形規(guī)律研究,得到了單一凍結和凍融交互作用下的溫度場、凍結壁凍脹以及井壁受力變形規(guī)律。以靈東煤礦凍結和強制解凍為工程背景,進行了白堊系地層凍結信息化施工技術的研究。
[Abstract]:By means of laboratory test, theoretical analysis, numerical analysis and field measurement, the theory and application of freezing and forced thawing in the Cretaceous water-bearing soft rock strata are studied in this paper. The mechanical and thermal properties of frozen soil in Cretaceous strata from -5 鈩,
本文編號:2260419
[Abstract]:By means of laboratory test, theoretical analysis, numerical analysis and field measurement, the theory and application of freezing and forced thawing in the Cretaceous water-bearing soft rock strata are studied in this paper. The mechanical and thermal properties of frozen soil in Cretaceous strata from -5 鈩,
本文編號:2260419
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