三軸壓縮下砂巖裂隙演化規(guī)律研究
發(fā)布時(shí)間:2019-02-16 14:50
【摘要】:基于恒定圍壓下砂巖的三軸壓縮試驗(yàn),得到不同圍壓下的應(yīng)力應(yīng)變曲線。認(rèn)為壓縮過(guò)程中的體積應(yīng)變是由基體材料的彈性體積應(yīng)變和裂隙體積應(yīng)變組成,通過(guò)計(jì)算得到裂隙體積應(yīng)變?cè)趬嚎s過(guò)程中各階段隨各應(yīng)力、應(yīng)變的變化關(guān)系,從而得到裂隙演化規(guī)律。
[Abstract]:Based on triaxial compression tests of sandstone under constant confining pressure, the stress-strain curves under different confining pressures are obtained. It is considered that the volume strain in the compression process is composed of elastic volume strain and fracture volume strain of the matrix material. The variation of the fracture volume strain with the stress and strain during the compression process is obtained by calculation. Thus, the law of fracture evolution is obtained.
【作者單位】: 中國(guó)礦業(yè)大學(xué)(北京)資源與安全工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(50904071;51274207)
【分類(lèi)號(hào)】:TD313
本文編號(hào):2424554
[Abstract]:Based on triaxial compression tests of sandstone under constant confining pressure, the stress-strain curves under different confining pressures are obtained. It is considered that the volume strain in the compression process is composed of elastic volume strain and fracture volume strain of the matrix material. The variation of the fracture volume strain with the stress and strain during the compression process is obtained by calculation. Thus, the law of fracture evolution is obtained.
【作者單位】: 中國(guó)礦業(yè)大學(xué)(北京)資源與安全工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(50904071;51274207)
【分類(lèi)號(hào)】:TD313
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