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Multi-stage continuous aeration method and structure for long tunnel high-speed water flow discharge chute
The invention discloses a multi-stage continuous aeration method and structure for a long tunnel high-speed water flow chute, and the method comprises the steps: firstly obtaining basic data of a to-be-measured long tunnel, and calculating the flow velocity V of an inlet of the chute, the gradient of the head and tail of the chute and the cost of an aerator; and analyzing and judging the flow velocity V of an inlet of the discharge chute, the gradient of the head and the tail of the discharge chute and the cost of the aerator, and determining whether the design scheme adopts a multi-stage continuous aeration method, a one-slope-to-bottom structure or a one-slope-to-bottom and dragon-to-tail structure. Multi-stage combined aerators are arranged at the head of a discharge chute in a concentrated mode through limited longitudinal fall, the flow speed behind the last-stage aerators is reduced to be within the flow speed threshold value where additional aeration is not needed, then a long and slow bottom slope is adopted for transition, and a dragon-falling tail body is additionally arranged when necessary; the number of the aerators is greatly reduced while the high-speed water flow aeration effect of the long tunnel is guaranteed, and the multi-stage combined aerators can well adapt to different bottom slope conditions by adjusting the size of the multi-stage combined aerators.
本发明公开了一种长隧洞高速水流泄槽多级连续掺气方法及结构，首先获取待测长隧洞的基础数据，对泄槽进口流速V、泄槽首尾坡度和掺气坎成本进行计算；再对泄槽进口流速V、泄槽首尾坡度和掺气坎成本进行分析和判断，确定设计方案是采用多级连续掺气方法、一坡到底还是一坡到底加龙落尾结构。本发明利用有限纵向落差在泄槽头部集中设置多级组合掺气坎，降低末级掺气坎后流速至不需要额外掺气的流速阈值以内，之后采用长缓底坡过渡，必要时增设龙落尾体型，在保证长隧洞高速水流掺气效果的同时较大程度地降低掺气坎数量，通过调整多级组合掺气坎尺寸，能够较好的适应不同底坡条件。
Multi-stage continuous aeration method and structure for long tunnel high-speed water flow discharge chute
The invention discloses a multi-stage continuous aeration method and structure for a long tunnel high-speed water flow chute, and the method comprises the steps: firstly obtaining basic data of a to-be-measured long tunnel, and calculating the flow velocity V of an inlet of the chute, the gradient of the head and tail of the chute and the cost of an aerator; and analyzing and judging the flow velocity V of an inlet of the discharge chute, the gradient of the head and the tail of the discharge chute and the cost of the aerator, and determining whether the design scheme adopts a multi-stage continuous aeration method, a one-slope-to-bottom structure or a one-slope-to-bottom and dragon-to-tail structure. Multi-stage combined aerators are arranged at the head of a discharge chute in a concentrated mode through limited longitudinal fall, the flow speed behind the last-stage aerators is reduced to be within the flow speed threshold value where additional aeration is not needed, then a long and slow bottom slope is adopted for transition, and a dragon-falling tail body is additionally arranged when necessary; the number of the aerators is greatly reduced while the high-speed water flow aeration effect of the long tunnel is guaranteed, and the multi-stage combined aerators can well adapt to different bottom slope conditions by adjusting the size of the multi-stage combined aerators.
本发明公开了一种长隧洞高速水流泄槽多级连续掺气方法及结构，首先获取待测长隧洞的基础数据，对泄槽进口流速V、泄槽首尾坡度和掺气坎成本进行计算；再对泄槽进口流速V、泄槽首尾坡度和掺气坎成本进行分析和判断，确定设计方案是采用多级连续掺气方法、一坡到底还是一坡到底加龙落尾结构。本发明利用有限纵向落差在泄槽头部集中设置多级组合掺气坎，降低末级掺气坎后流速至不需要额外掺气的流速阈值以内，之后采用长缓底坡过渡，必要时增设龙落尾体型，在保证长隧洞高速水流掺气效果的同时较大程度地降低掺气坎数量，通过调整多级组合掺气坎尺寸，能够较好的适应不同底坡条件。
Multi-stage continuous aeration method and structure for long tunnel high-speed water flow discharge chute
一种长隧洞高速水流泄槽多级连续掺气方法及结构
WU SHIQIANG (author) / WANG FANGFANG (author) / HUANG HAILONG (author) / TAN BIN (author) / WU XIUFENG (author) / CHEN GUANGMING (author) / SUN CHENGUANG (author) / WANG PENG (author) / ZHAO HAIZHONG (author) / SUN SHIYOU (author)
2024-07-05
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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