Numerical simulation study on influence of three-roadway excavation sequence on stability of roadway group
Based on the research background of the main roadway of Yuwang Coal Mine of Huaneng Yunnan Yunnan East Energy Company Limited,a three-roadway excavation scheme was designed by using numerical simulation method,and the characteristics of stress field,displacement field and damage zone changes of roadway groups under different excavation sequences were compared and ana-lyzed.It is found that the excavation sequence has no great influence on the overall stress field and dis-placement field,but in some specific engineering areas,the stress,displacement and failure range will be significantly different.Therefore,the damage type,damage range and distribution law of the whole roadway group area are obviously different,and the best construction sequence plan is designed by comparing the schemes.The research results provide necessary theoretical guidance for the design and construction of similar roadway groups.
roadway groupthree-roadway excavationdesign and constructionsequence of excavationnumerical simulation
万方数据
维普
