煤矿安全2019，Vol.50Issue(1)：196-199,4.DOI:10.13347/j.cnki.mkaq.2019.01.048
沿空留巷巷旁墙体稳定性关键影响因素模拟
Simulation on Key Influencing Factors of Stability of Roadside Wall in Gob－side Entry Retaining
摘要
Abstract
In order to better study the stability of the wall along the roadway,using the orthogonal experiment and FLAC3D numerical simulation, the effects of wall strength, width, depth, height and thickness of direct roof on the stability of the wall are analyzed, then the results of the simulation are analyzed to determine the importance of the factors and provide guidance for related research. The simulation results show that the deformation of roof and floor has similar variation trend when the wall width is certain, however, when the buried depth of the wall around the lane changes little, the variation range of roof and floor is small. But, when the wall width is 2 m or 3 m, the change is more obvious. This shows that when the wall width is relatively small, the stability of the roadside wall is easily affected by other factors, and when the wall width gradually increases, the stability of the roadside wall affected by other factors is small. Through the analysis of extreme difference of simulation results, it is concluded that the key factors affecting the stability of the roadside wall of the left and right lane are: wall width ＞ buried depth of wall ＞wall strength ＞ mining height ＞ direct roof thickness.关键词
沿空留巷/巷旁墙体/数值模拟/正交实验/稳定性/充填材料Key words
gob-side entry retaining/roadside wall/numerical simulation/orthogonal test/stability/filling material分类
矿业与冶金引用本文复制引用
朱登兴,郑西贵,郭玉,安铁梁,程星..沿空留巷巷旁墙体稳定性关键影响因素模拟[J].煤矿安全,2019,50(1):196-199,4.基金项目
国家自然科学基金资助项目(51674158) （51674158）
泰山学者优势特色学科人才团队支持计划资助项目 （）
