基于隧道断面面积变化的围岩稳定性判别
发布时间：2018-07-28 21:12
【摘要】：随着新奥法施工技术的广泛应用,围岩的动态变形越来越受到人们的关注。目前,我国主要是通过监测典型节点的位移来判断围岩变形的稳定性。典型节点的变形并不能代表整个围岩断面的变形状况,该方法存在一定的缺陷,因此提出采用隧道断面面积变化的方法来评价围岩变形的稳定性。采用突变理论数学方法计算Ⅳ级和Ⅴ级围岩在不同埋深条件下断面面积的变化值,得出面积变化的极限值,最终以此极限值作为判定围岩变形稳定的判据。
[Abstract]:With the wide application of the new Austrian construction technology, people pay more and more attention to the dynamic deformation of surrounding rock. At present, the stability of surrounding rock deformation is judged by monitoring the displacement of typical nodes in China. The deformation of typical joints does not represent the deformation of the whole surrounding rock section, and the method has some defects. Therefore, the method of tunnel cross-section area variation is proposed to evaluate the stability of surrounding rock deformation. The catastrophe theory mathematical method is used to calculate the variation value of cross section area of grade 鈪，
本文编号：2151591
[Abstract]:With the wide application of the new Austrian construction technology, people pay more and more attention to the dynamic deformation of surrounding rock. At present, the stability of surrounding rock deformation is judged by monitoring the displacement of typical nodes in China. The deformation of typical joints does not represent the deformation of the whole surrounding rock section, and the method has some defects. Therefore, the method of tunnel cross-section area variation is proposed to evaluate the stability of surrounding rock deformation. The catastrophe theory mathematical method is used to calculate the variation value of cross section area of grade 鈪，
本文编号：2151591
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