沿空留巷巷道底板破坏特征及影响因素分析

针对沿空留巷巷道底板变形严重等问题，分析了沿空留巷巷道底板破坏特征及影响因素，以山西2个矿作为研究对象，分析了沿空留巷巷道底板破坏特征，主要分为5个阶段，主要为掘进稳定期、一次采动前支撑影响期、一次采动后影响期、一次采动后稳定期和二次采动前支撑影响期；然后采用FLAC^3D数值模拟软件，对沿空留巷底鼓影响因素进行分析。研究为沿空留巷巷道底鼓的治理提供了理论基础。

Analysis of floor failure characteristics and influencing factors of gob-side entry retaining

In view of serious deformation of roadway floor along goaf,the failure characteristics and influencing factors of roadway floor along goaf were analyzed,taking two mines in Shanxi Province as the research object,to analyze destruction characteristics of roadway floor along goaf,which was mainly divided into five stages,the driving stability period,the pre-mining supporting influence period,the post mining influence period,the post mining stability period and the pre-mining supporting influence period.Then FLAC^3D numerical simulation software was used to analyze influencing factors of floor heave of gob-side entry retaining.The research provided a theoretical basis for treatment of floor heave in gob-side entry retaining.