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MANHOLE REHABILITATION STRUCTURE AND MANHOLE REHABILITATION METHOD
MANHOLE REHABILITATION STRUCTURE AND MANHOLE REHABILITATION METHOD
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机译：孔修复结构和孔修复方法
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摘要
PROBLEM TO BE SOLVED: To rehabilitate an existing manhole whose upstream-side duct and downstream-side duct have tube axes crossed.;SOLUTION: A rehabilitation structure for rehabilitating an existing manhole having an upstream-side duct 2 and a downstream-side duct 3 crossed comprises a plastic-made manhole rehabilitation member 20 arranged at a bottom part of the manhole. The manhole rehabilitation member 20 has a bent pipe 21 which has a circularly-sectioned flow passage and has a pipe axis bent corresponding to the angle of intersection of the upstream-side duct and downstream-side duct. An inflow part 21a of the bent pipe 21 is connected airtightly to the upstream-side duct 2, and an outflow part 21b of the bent pipe 21 is connected airtightly to the downstream-side duct 3. The bent pipe 21 has a raised mouth part 22, projecting upward perpendicularly, formed in one body, and a plastic-made raised pipe 30 which is perpendicular and allows a person to enter itself connects with the raised mouth part 22 in one body or as a separate body.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2018,JPO&INPIT
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