摘要
利用FLAC^(3d)模拟软件对3种埋深条件和3种巷道断面形状的围岩应力、位移分布规律进行了模拟分析,得出结论如下:随埋深加大,巷道周围整体压力增大,位移量增加;圆形巷道卸压区最小,最有利于巷道支护,而矩形巷道出现拉应力,最容易破坏,半圆拱形巷道底板较容易破坏;围岩位移量大小在两帮和顶底板都是矩形>半圆拱形>圆形巷道。
Using simulation software FLAC^3d, three conditions of buried depth and three kinds of roadway cross section shape of the surrounding rock stress and displacement distribution law are simulated analysis, the conclusions are as follows： along with the depth increasing, the overall pressure around roadway and displacement increase; circular roadway has smallest pressure relief area, which is helpful for roadway support, and rectangular tunnels is the most easy to damage with tensile stress, and semicircle arch tunnel bottom is easy to damage; displacement of surrounding rock size in two sides and roof and floor are rectangle 〉 semicircle arch circular tunnels 〉 circular tunnel.
出处
《山东煤炭科技》
2017年第10期11-13,共3页
Shandong Coal Science and Technology
关键词
埋深
断面
应力
规律
buried depth section stress law
