Study On Comprehensive Treatment Scheme Of Water Gushing In Water Comveyance Tunnel Of Yellow River Diversion Project In Central Shanxi Province

In recent years,with the needs of production and life,more and more tunnel projects have started construction.In the process of construction of transportation and water conservancy projects,due to the long line distance and complex geological conditions,many tunnel projects need to be constructed to meet the line layout plan.Especially the hydraulic tunnel projects built in mountainous areas have long distances and deep buried depths during the construction process.Large,complex hydrogeological conditions,small working face,large interference,etc.,during the construction process will inevitably encounter bad geological tunnel sections,landslides,rock bursts,water gushing and other phenomena.The entire line of the Yellow River Diversion Tunnel Project in central Shanxi is located in the Lvliang mountain area.The hydrogeological conditions are particularly complex.The comprehensive treatment of the tunnel gushing water during the project implementation has become one of the main problems faced in the tunnel construction process.The single water blocking or drainage measures are affected The actual conditions of the project and the environmental protection requirements have been unable to meet the needs of engineering construction.Based on the water inrush problem in the construction of the tunnel project,this paper analyzes the comprehensive treatment of the tunnel water inrush from the aspects of tunnel water inrush hazard,tunnel water inflow prediction,tunnel water treatment measures,and advanced geological forecast of the tunnel,combined with the TBM standard of the main tunnel of the Central Yellow River Diversion Project.The section water inrush treatment plan and the drilling and blasting method construction water treatment plan of the 23 rd standard of the west trunk construction of the Central Yellow River Diversion Project are comprehensively analyzed from the aspects of engineering geomorphology,hydrogeology,engineering geology,and water volume prediction.Finally,we successfully conducted a comprehensive summary through the construction technology of the water-rich tunnel section,combined with the comprehensive treatment measures of the water-rich tunnel section that will be faced in the 23 rd bid of the west trunk line construction,and combined with some domestic and foreign water inrush treatment methods to comprehensively The treatment methods are analyzed and summarized,and a more complete treatment plan is obtained.It is concluded that “ the tunnel construction period should closely focus on the principles of groundwater forecasting first,blockage as the main,drainage as a supplement,and the combination of blockage and drainage.And with the new concept of coordinated development of underground tunnel engineering construction and groundwater protection,the principle of“mainly blocking” tunnel gushing water treatment principle has taken the lead" preliminary conclusion.Combining the hydrogeological conditions of the diversion tunnel of the Central Yellow River Diversion Project,the underground water gushing scheme is summarized,which is helpful and guiding the construction of the Central Yellow River Diversion Project.At the same time,it is also hoped to provide some construction ideas for the groundwater treatment of similar underground tunnel projects to facilitate development Targeted water gushing treatment.