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本文主张施工位移监测和现场量测原岩应力,对原岩应力和围岩压力考虑为一般的非均匀分布情况,利用复变函数理论来求解圆形隧洞喷射混凝土衬砌问题。对围岩压力和喷层内缘切向应力绘制成图,根据这些图进行简单计算后可很方便对喷层进行力学分析和强度校核。本文还举有算例,以说明这些图的使用。
This paper advocates construction displacement monitoring and on-site measurement of the original rock stress. Considering the original non-uniform distribution of the original rock stress and surrounding rock pressure, the complex variable function theory is used to solve the problem of shotcrete lining in circular tunnels. The mapping of the surrounding rock pressure and the tangential stress at the inner edge of the sprayed layer is based on maps. Simple calculations based on these maps can facilitate the mechanical analysis and strength verification of the sprayed layer. This article also gives examples to illustrate the use of these figures.