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A platform for research: civil engineering, architecture and urbanism
Integrated super-discharge energy-dissipation flood-overflowing unit and method
The invention relates to an integrated super-discharge energy-dissipation flood-overflowing unit. The unit comprises an inlet overflow weir, wherein a chute is formed in the downstream of the inlet overflow weir; a water-falling energy dissipater is formed in the chute; the inlet overflow weir is a compound key overflow weir; the compound key overflow weir comprises a weir body; a forward triangular pier and a reverse triangular pier with horizontal bottom surfaces are staggered at the top of the weir body; the length in the water flow direction of the bottom surfaces of the positive triangular pier and the reverse triangular pier exceeds the thickness of the top end of the weir to form a weir front cantilever and a weir rear cantilever; a partition is arranged between the positive triangular pier and the reverse triangular pier. Compared with the conventional overflow weir, the compound key overflow weir has the advantages that the flow coefficient is remarkably increased; water heads acting on the weir are obviously reduced, so that a condition of heightening the dam for dealing with the exceeding flood caused by dam break and extreme climate. The integrated super-discharge energy-dissipation flood-overflowing unit is simple in structure and low in upgrading, improving and maintaining costs; by virtue of the open type arrangement, the sand is easily discharged; the unit is especially suitable for upgrading and improvement of the built wide-top weirs or practical weir flood spillway.
Integrated super-discharge energy-dissipation flood-overflowing unit and method
The invention relates to an integrated super-discharge energy-dissipation flood-overflowing unit. The unit comprises an inlet overflow weir, wherein a chute is formed in the downstream of the inlet overflow weir; a water-falling energy dissipater is formed in the chute; the inlet overflow weir is a compound key overflow weir; the compound key overflow weir comprises a weir body; a forward triangular pier and a reverse triangular pier with horizontal bottom surfaces are staggered at the top of the weir body; the length in the water flow direction of the bottom surfaces of the positive triangular pier and the reverse triangular pier exceeds the thickness of the top end of the weir to form a weir front cantilever and a weir rear cantilever; a partition is arranged between the positive triangular pier and the reverse triangular pier. Compared with the conventional overflow weir, the compound key overflow weir has the advantages that the flow coefficient is remarkably increased; water heads acting on the weir are obviously reduced, so that a condition of heightening the dam for dealing with the exceeding flood caused by dam break and extreme climate. The integrated super-discharge energy-dissipation flood-overflowing unit is simple in structure and low in upgrading, improving and maintaining costs; by virtue of the open type arrangement, the sand is easily discharged; the unit is especially suitable for upgrading and improvement of the built wide-top weirs or practical weir flood spillway.
Integrated super-discharge energy-dissipation flood-overflowing unit and method
GUO XINLEI (author) / JI PING (author) / XIA QINGFU (author) / YANG KAILIN (author) / FU HUI (author) / WANG TAO (author) / GUO YONGXIN (author) / ZHAO YIJUN (author) / YUAN JUE (author) / CHEN XIAOLI (author)
2015-06-10
Patent
Electronic Resource
English
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
RISK OF FLOOD LEVEE OVERFLOWING
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