Application of reverse shaft in construction of urban pipe jacking project
This paper studies the application of reverse well construction technology,that is,a wall structure is constructed in the reverse sequence from top to bottom,with the bottom is finally sealed at last.The construction of the reverse shaft has the characteristics of safety,reliability and simple construction.Through the practice of the pipe jacking work well in the regulation project of Mudunhe River in Guangming District of Shenzhen,it is found that the construction of the reverse method has many advantages over the traditional construction of caisson,including keeping the soil around the caisson in its original state,accurately controlling the elevation of the opening,thoroughly strengthening the opening,convenient construction,shortening the construction period and not destroying the original pipeline.The technique of reverse shaft construction has been successfully applied in Mudun River comprehensive regulation project,which can provide a feasible solution for subsequent similar projects.Therefore,the construction technology of reverse method shaft has high popularization and application value.
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