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基于Hoek-Brown準則的Morgenstern-Price法在邊坡穩定性分析中的應用

Application of the Morgenstern-Price scheme based on the Hoek-Brown criterion to slope stability analysis

  • 摘要: 針對目前邊坡穩定性計算中破壞準則均為Mohr-Coulomb破壞準則的情況,根據相關準則和原理,推導了基于Hoek-Brown準則的Morgenstern-Price法計算公式.該法克服了一般巖體邊坡穩定分析中巖體強度參數純經驗取值的缺點,使計算更為精確、合理.采用具體算例進行對比,探討了不同準則下邊坡穩定性計算的差異原因,并運用基于Hoek-Brown準則的Morgenstern-Price法對安家嶺露天礦北端幫滑坡進行了分析.

     

    Abstract: The plastic criterion popularly used in slope stability analysis is the Mohr-Coulomb criterion.A formula based on the basic principles of the Hoek-Brown failure criterion and the Morgenstern-Price scheme was deduced.The disadvantage that data are empirically obtained in slope stability analysis is overcome by adopting this method and the computing results are more accurate and reasonable.An example was discussed to compare the slope stabilities with different failure criteria,and the stability analysis of Anjialing open-pit mine slope was carried out by using the Morgenstern-Price scheme based on the Hoek-Brown criterion.

     

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