Development Review on Waterproof and Drainage Technology for Drill-and-blast Highway Tunnel
To study the development trend and future direction of waterproof and drainage technology for highway tunnel with drilling and blasting method,the development process,technical requirements,design,construction and maintenance of waterproof and drainage technology were summarized.The problems need to be paid attention to and the next development direction were prospected.The result shows that according to the technical development level of tunnel construction,the waterproof and drainage technology can be divided into masonry era and post-concrete era,has realized the basic framework of principle guidance,design optimization,material innovation,construction control,standard guarantee and operation and maintenance.In the newly revised specification in China,the quantitative standard of tunnel leakage water is added to make the waterproof grade more objective and scientific.From the comparison of the structural forms of the waterproof and drainage system,the controlled drainage tunnel can take into account the water pressure of the tunnel lining and the maintenance of the ecological balance of the tunnel area.Although the drilling and blasting tunnel waterproof and drainage technology has added some maintainability design,it is still mainly based on functional design,and the existing technology is difficult to meet the maintenance needs of the waterproof and drainage system.It should be noted that Waterproof and drainage technology is a systematic problem.It is necessary to establish an integrated waterproof and drainage system based on the whole life cycle,and to systematically study the selection of waterproof and drainage system and controlled waterproof and drainage technology.Through the analysis and evaluation of environmental impact of drainage in the whole life cycle,the reasonable waterproof and drainage design type is determined.In addition,it is necessary to strengthen the study on the optimization of waterproof and drainage system and new technology,and accelerate the development of new waterproof and drainage materials.At the same time,it is necessary to strengthen the study on maintenance technology,especially the study on maintainability technology and repair technology.
tunnel engineeringwaterproof and drainage technologyreviewstructural form of waterproof and drainage systemmaintenance technology
NETL
NSTL
万方数据
