On Construction Technology of Surface Water-blocking Grouting in Tunnel Project Across River:A Case Study of Chao'er-Xiliao Conveyance Project
In order to discuss the construction technology of surface water-blocking grouting in tunnel project across river,based on the key and difficult construction points chao'er-Xiliao converyance project,the application points and practical results of the construction technology of surface water-blocking grouting are analyzed.It is conclu-ded from practice that how to effectively block water is the key to the success or failure in the construction of riv-er tunnel project.The surface grouting has the advantages of convenient construction and good water blocking effect,etc.In the actual construction,it is necessary to effectively control the grouting test,ensure the quality of the drilling hole,select the appropriate grouting method,and strengthen the treatment of special conditions.Through the evaluation and analysis of the surface grouting effect,the inspection hole shows that the core sample has good integrity,and obvious signs of filling of serous stones can be seen.It is proved that the technology of surface water-blocking grouting is efficient and feasible in the tunnel construction across the river,so as to ensure the smooth completion of the tunnel construction,which can provide reference for similar engineering construction.
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