专利汇可以提供Constructing method of underground continuous wall专利检索,专利查询,专利分析的服务。并且PURPOSE: To improve operation efficiency, by facilitating the extraction of an interlocking pipe by building the pipe to an end portion of an excavation ditch formed in the ground, by placing concrete to the excavation ditch while pulling up the pipe under a specified condition and by filling sand to the marks.
CONSTITUTION: An interlocking pipe 2 is inserted into an end portion of an excavation ditch 1 made up in the ground, reinforcing rods are built into the ditch 1 and concrete 6 is slowly placed from a tremie pipe 5. In this case, the pipe 2 is slowly pulled up before concrete strongly adheres while a lower end 7 of the pipe 2 is maintained so that the lower end continually be located at locations (Lower than by several m) lower than a placing surface 8 of the concrete. Sand 9 is successively filled in the pipe 2 at the same time, and the sand supports the concrete 6 after extracting the pipe 2. The pipe 2 is completely extracted after the placing of the concrete is finished.
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