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A platform for research: civil engineering, architecture and urbanism
Arch dam flood discharge and energy dissipation structure
The arch dam flood discharge and energy dissipation structure comprises a dam body, an overflow surface hole and a flood discharge middle hole are formed in the dam body, a plunge pool and an auxiliary dam are arranged on the downstream of the dam, the overflow surface hole comprises side walls and a bottom plate arranged between the two side walls, and the tail end of the bottom plate is located on the inner sides of the tail ends of the side walls; a first energy dissipater located in the overflow surface hole is arranged at the tail end of an outlet of the overflow surface hole, and a second energy dissipater is arranged at the tail end of an outlet of the flood discharge middle hole. A lifting area is arranged on the upstream side of the plunge pool, and the horizontal length of the lifting area does not exceed the falling point position of the overflow surface hole nappe; the height of the lifting area does not exceed half of the height of the auxiliary dam, and a deep water area is formed between the lifting area and the auxiliary dam. By means of the special-shaped plunge pool, the problem that the hydrodynamic pressure intensity of impact of the plunge pool bottom plate is too large due to the fact that water enters the surface middle hole nappes in a concentrated mode is solved, a more complete resistance body can be reserved on the downstream side of the dam body, and the engineering investment is reduced while the stability of the dam body is enhanced.
本发明公开了一种拱坝泄洪消能结构，包括坝身，在坝身上设置有溢流表孔和泄洪中孔，在大坝的下游设置有水垫塘及二道坝，溢流表孔包括边墙及设置在两个边墙之间的底板，底板的末端位于边墙尾端的内侧，溢流表孔的出口末端设置有位于溢流表孔内部的第一消能工，泄洪中孔的出口末端设置有第二消能工；水垫塘的上游侧设置有抬高区域，抬高区域的水平长度不超过溢流表孔水舌的落点位置；抬高区域的高度不超过二道坝坝高的一半，抬高区域与二道坝之间形成深水区。本发明利用异形水垫塘避免了因表中孔水舌集中入水而造成的水垫塘底板冲击动水压强过大的问题，坝体下游侧可保留更为完整的抗力体，增强了坝体稳定性的同时减小了工程投资。
Arch dam flood discharge and energy dissipation structure
The arch dam flood discharge and energy dissipation structure comprises a dam body, an overflow surface hole and a flood discharge middle hole are formed in the dam body, a plunge pool and an auxiliary dam are arranged on the downstream of the dam, the overflow surface hole comprises side walls and a bottom plate arranged between the two side walls, and the tail end of the bottom plate is located on the inner sides of the tail ends of the side walls; a first energy dissipater located in the overflow surface hole is arranged at the tail end of an outlet of the overflow surface hole, and a second energy dissipater is arranged at the tail end of an outlet of the flood discharge middle hole. A lifting area is arranged on the upstream side of the plunge pool, and the horizontal length of the lifting area does not exceed the falling point position of the overflow surface hole nappe; the height of the lifting area does not exceed half of the height of the auxiliary dam, and a deep water area is formed between the lifting area and the auxiliary dam. By means of the special-shaped plunge pool, the problem that the hydrodynamic pressure intensity of impact of the plunge pool bottom plate is too large due to the fact that water enters the surface middle hole nappes in a concentrated mode is solved, a more complete resistance body can be reserved on the downstream side of the dam body, and the engineering investment is reduced while the stability of the dam body is enhanced.
本发明公开了一种拱坝泄洪消能结构，包括坝身，在坝身上设置有溢流表孔和泄洪中孔，在大坝的下游设置有水垫塘及二道坝，溢流表孔包括边墙及设置在两个边墙之间的底板，底板的末端位于边墙尾端的内侧，溢流表孔的出口末端设置有位于溢流表孔内部的第一消能工，泄洪中孔的出口末端设置有第二消能工；水垫塘的上游侧设置有抬高区域，抬高区域的水平长度不超过溢流表孔水舌的落点位置；抬高区域的高度不超过二道坝坝高的一半，抬高区域与二道坝之间形成深水区。本发明利用异形水垫塘避免了因表中孔水舌集中入水而造成的水垫塘底板冲击动水压强过大的问题，坝体下游侧可保留更为完整的抗力体，增强了坝体稳定性的同时减小了工程投资。
Arch dam flood discharge and energy dissipation structure
一种拱坝泄洪消能结构
ZHOU HUA (author) / LIU YAOLAI (author) / ZHANG JIANMIN (author) / YAN JIANHUA (author) / TAN BIN (author) / XU CONGYUN (author) / ZHANG LIFANG (author) / ZHOU YUEFEI (author) / ZHANG YONGZHI (author) / ZOU JIE (author)
2024-10-01
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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