求翻译：摘要：水平应力对巷道围岩稳定性具有重要的影响。本文以埋深为800米，截面为直径为6米的圆形巷道为模型，运用运用flac3d软件建立了水平方向及底部边界为固定边界，顶边界为应力边界，分别分析了在侧压系数为1.0,1.2,1.6,2.0 四种情况下巷道围岩的应力分布位移的变化。是什么意思？

Abstract: The level of stress has a significant influence on rock mass stability. Depth of 800 m, cross section of 6 m diameter circular tunnel model, using the fixed boundary use flac3d software to establish the horizontal and the bottom boundary, top boundary of the stress boundary, were analyzed

Summary: stress levels of the gallery of rock stability has a significant impact. This buried deep in the 800 meters, and cross-sectional diameter of 6 meters for the circular gallery as a model, use flac3d application software to establish a horizontal direction and the bottom border to border, and

Abstract: The horizontal stress has the important influence to the tunnel adjacent formation stability.This article take the burying depth as 800 meters, the section for the diameter is 6 meter circular tunnels is a model, has established the horizontal direction and the base boundary using the flac