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为了探讨矩形断面巷道合理的宽高比,基于弹性力学中孔口应力的复变函数解法,求解矩形断面巷道周边应力分布,并通过单因素分析法探讨相关因素对矩形断面巷道周边应力变化的影响。同时,根据潘一东矿1232(1)工作面的地质条件,运用数值模拟软件FLAC3D模拟不同宽高比矩形断面巷道周边位移。研究结果表明:矩形断面巷道围岩为各向同性时,巷道应沿最大水平应力方向布置,矩形断面巷道合理的宽高比约为1;潘一东矿1232(1)工作面非均质矩形断面回采巷道的合理宽高比为1.2,矩形断面合理的宽高比与巷道断面中各种不同岩性的岩石所占比重有关。
In order to explore the reasonable aspect ratio of rectangular cross-section roadway, the stress distribution around the rectangular cross-section roadway is solved based on the complex function method of the orifice stress in the elastic mechanics. The influence of relevant factors on the stress change around the roadway in the rectangular section is discussed by single factor analysis . At the same time, according to the geological conditions of 1232 (1) face in Pan Yidong Mine, the numerical simulation software FLAC3D was used to simulate the displacement around the roadway with different aspect ratios. The results show that when the surrounding rock of rectangular section is isotropic, the roadway should be arranged along the direction of maximum horizontal stress, and the reasonable aspect ratio of the rectangular section is about 1. The non-homogeneous rectangular section of 1232 (1) The reasonable aspect ratio of the roadway is 1.2, and the reasonable aspect ratio of the rectangular section is related to the proportion of rocks with different lithologies in the tunnel section.