Rainwater drainage system with shallow rainwater storage adjusting structure
A drainage system and rainwater technology, applied in waterway systems, sewage discharge, water supply devices, etc., can solve problems such as increased head loss, waterlogging, and increased pipeline flow, so as to reduce the possibility of waterlogging, delay discharge, The effect of improving flood control standards
Active Publication Date: 2012-04-11
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Problems solved by technology
However, when the rainfall intensity exceeds the original design standard, the flow in the pipeline increases, and the head loss increases accordingly. When the flow reaches a certain level, the liquid level in the upstream inspection well is higher than the ground, resulting in waterlogging
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[0018] like figure 2 As shown, a specific embodiment of the rainwater drainage system of the present invention includes an upstream inspection well with an inflow flow rate of Q1, a downstream inspection well with an output flow rate of Q2, and a through main pipe.
[0019] In the present invention, between the upstream inspection well and the downstream inspection well, a shallow rainwater regulation and storage structure for regulation is arranged in parallel with the main pipeline. At the same time, the present invention also adds an overflow weir 1 in the existing upstream inspection well to form an overflow area in the upstream inspection well. The weir crest of the overflow weir 1 is flush with the inner top of the water inlet pipe of the upstream inspection well, and the overflow area is connected with the water inlet pipe of the shallow rainwater regulation and storage structure.
[0020] The shallow rainwater storage structure can be a tubular storage tank or a box ...
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The invention discloses a rainwater drainage system with a shallow rainwater storage adjusting structure. The rainwater drainage system at least comprises an upstream inspection well, a downstream inspection well and a communicated main pipeline; the shallow rainwater storage adjusting structure is arranged in parallel between the upstream inspection well and the downstream inspection well; and an overflow weir for forming an overflow area is arranged in the upstream inspection well, the top of the overflow weir is flush with the inner top of a water inlet pipe of the upstream inspection well, a water inlet pipe of the shallow rainwater storage adjusting structure is communicated with the overflow area, and a water outlet pipe of the shallow rainwater storage adjusting structure is communicated with the downstream inspection well. Because the rainwater drainage system is provided with the shallow rainwater storage adjusting structure, when the rainfall intensity exceeds the original design standard of the rainwater drainage system, the rainwater exceeding the standard overflows to the shallow rainwater storage adjusting structure through the overflow weir in the upstream inspection well and is slowly drained to the downstream inspection well. The invention has the advantages that: the flood protection standard of the rainwater drainage system is improved, or the rainstorm exceeding the standard is stored, and the possibility of producing water logging in an upstream area is reduced.
Description
technical field [0001] The invention relates to the field of rain and flood technology, in particular to a rainwater drainage system with a shallow rainwater regulation and storage structure. Background technique [0002] With the expansion of urbanized areas and the increase in the intensity of construction and development in urbanized areas, the hydrological and meteorological conditions in urbanized areas have changed in recent years, resulting in an increase in the frequency and intensity of rainstorms year by year, and urban flood control is facing more and more severe challenges. In this case, to further reduce rain and flood disasters, maintain the normal and stable operation of urban public infrastructure, and ensure the safety of residents' lives and properties, new requirements are put forward for rain and flood facilities. [0003] The existing urban rainwater pipe network system is always designed based on a certain design rainstorm return period. Rainfall events...
Claims
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Inventor 胡龙张善发李兵徐连军
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD