本文關(guān)鍵詞： 巖土工程 圍巖土質(zhì) Peck公式 主要影響角 沉降槽寬度系數(shù) 間隙參數(shù)　出處：《重慶交通大學(xué)學(xué)報(自然科學(xué)版)》2017年05期 　論文類型：期刊論文

【摘要】：基于平面應(yīng)變原理,考慮巖土體的不可壓縮性,采用國內(nèi)外適用性較強(qiáng)的Peck公式驗(yàn)證所提出的考慮隧洞直徑與上覆土層厚度、土體削減、盾尾間隙、圍巖土質(zhì)概況等因子對影響角參數(shù)、任意深度沉降槽寬度對數(shù)值的影響及取值區(qū)間。擬采用具體參數(shù)用于隨機(jī)介質(zhì)理論中,探討了參數(shù)變化對Park位移模式3引起的隧道軸線上任一深度土層的三維空間位移的影響。通過相關(guān)具體算例結(jié)果表明:采用考慮圍巖土體性質(zhì)參數(shù)比較合理,且在工程上應(yīng)用偏于安全。
[Abstract]:Based on the plane strain principle and considering the incompressibility of rock and soil mass, the Peck formula with strong applicability at home and abroad is used to verify the proposed method, which considers the tunnel diameter and overlying soil thickness, soil reduction, shield tail clearance, etc. The influence of factors such as the general state of surrounding rock on the parameters of angle and the width of settlement trough at any depth and the range of values are discussed. The concrete parameters are used in the theory of random medium. This paper discusses the influence of parameter change on the three-dimensional spatial displacement of the tunnel axial line in a deep soil layer caused by Park displacement mode 3. The results of relevant examples show that it is reasonable to consider the property parameters of surrounding rock and soil mass. And in the application of safety in engineering.
【作者單位】： 西安石油大學(xué)機(jī)械工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51405385) 陜西省教育廳專項(xiàng)科研計劃項(xiàng)目(15JK1562) 西安石油大學(xué)博士科研基金項(xiàng)目(250205002)
【分類號】：U455.5
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本文編號：1507777