| 摘要 |
PROBLEM TO BE SOLVED: To provide a new sectional manhole which can be efficiently built within a vertical shaft by simplifying the connections at the inlet and outlet sides of the pipe end portions. SOLUTION: A pipe installing frames 2 are separated into four pipe connecting wall members 2a and 2b and connecting wall members 2c and 2d; and each wall member 2a and 2b of the pipe connection holes 10 and 11 are individually connected to pipe end portion B1 and B2 at the inflow side and the outflow side; and thereafter the pipe end portions B1 and B2 at the pipe installed body2 connected to the inflow side and outflow side can be assembled by connecting respective wall members 2a to 2d. Since the pipe attaching frame is molded into one body, previous troubles such as taking a lot of time for connecting the pipe end portion inside the shaft and the manhole can be efficiently built inside a limited small space, and especially an assemble type manhole useful for building in the middle of the pipeline embedded underground specially by the propelling method. COPYRIGHT: (C)2005,JPO&NCIPI
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