Research on the Influence of Shallow Underground Excavation Construction of Large-Section Tunnels on the Stability of Surrounding Rock in Karst Strata
In recent years,with the continuous development of China's economy,the categories of engineering construction industry in China have been increasing and showing diversified development.Among them,the shal-low underground excavation method for large-section tunnels in karst areas occupies an important position in mod-ern underground engineering construction,its economic and social benefits are significant,directly affect China's economic development.However,due to the special geological conditions of karst strata,the influence of the con-struction process on the stability of the surrounding rock has always been an urgent problem in the engineering field.The geological structure of the karst area is complex and the mechanical characteristics are not uniform,and especially in the shallow underground excavation construction of the large-section tunnel,its complexity and un-certainty are more prominent.The stability of surrounding rock directly affects the safety and application life of the tunnel,especially under shallow underground conditions,affected by surface load,groundwater and construction disturbance and other factors,surrounding rock deformation and even collapse.Therefore,it is of great significance to study the influence mechanism of shallow underground excavation of large section tunnel on surrounding rock stability,which is helpful to the improvement of engineering construction quality.
Karst strataLarge-section tunnelShallow underground excavationStability of surrounding rocks
万方数据
维普
