High arch dam construction diversion tunnel structure and design method thereof
A technology for constructing diversion and high arch dams, applied in the field of diversion tunnel structure, can solve the problems that the diversion tunnel structure cannot meet higher requirements, and achieve the effect of favorable dam structure, reduced gate size and reduced investment
Active Publication Date: 2016-02-17
POWERCHINA CHENGDU ENG
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Problems solved by technology
In recent years, with the development of diversion and interception design technology for high arch dam construction, higher requirements have been put forward for diversion tunnel layout design in terms of diversion tunnel multifunctionality and adaptability to different power generation schedules. Diversion tunnel structure can no longer meet higher requirements
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[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0029] Such as Figure 1 to Figure 4 As shown in, the diversion tunnel structure for high arch dam construction according to the present invention includes a diversion tunnel whose inlet port communicates with the river channel upstream of the upstream cofferdam 1, and whose outlet port communicates with the river channel downstream of the downstream cofferdam 2. Flow tunnel comprises high hole 3 and low hole 4, and the bottom plate elevation of described high hole is higher than the bottom plate elevation of low hole; Connected with the traffic road on the downstream side of the river; during the non-flood season, only through the low hole 4 diversion, and during this period, the floor elevation Hgr of the entrance 31 of the high hole is higher than the water level hr in the river, and the exit of the high hole The floor elevation Hgc of the ...
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The invention belongs to the technical field of water resources and hydropower engineering, and discloses a high arch dam construction diversion tunnel structure and a design method thereof. With the adoption of the high arch dam construction diversion tunnel structure and the design method of the high arch dam construction diversion tunnel structure, diversion tunnels can be used for transportation in a non-flood season; through reasonable arrangement of the high diversion tunnel and the low diversion tunnel, particularly the arrangement of the size of the low diversion tunnel, in the non-flood season, the river diversion requirement can be met simply through the low diversion tunnel, the high diversion tunnel can be communicated with transportation roads corresponding to an inlet end and an outlet end, then transportation is realized through the high diversion tunnel, thereby realizing the one-diversion tunnel multifunctional purpose. In a flood season, when the low diversion tunnel can not meet the flood diversion requirement, the high diversion tunnel can assist in performing river diversion, and the flood protection requirement is met. The safety of sluice releasing and blocking on the diversion tunnels in the later stage can be improved, and the requirements of different power generation construction periods can be met.
Description
technical field [0001] The invention relates to the technical field of diversion and interception construction in water conservancy and hydropower projects, in particular to a diversion tunnel structure and a design method thereof in the construction of high arch dams. Background technique [0002] During the construction of high arch dams in deep mountain and canyon areas, the cofferdam cuts off and cuts off the flow throughout the year, and the construction diversion method of diversion through diversion tunnels is the most used. Key issues in closure design. At present, during the initial diversion, the flood flow in the flood season is 5000-7000m 3 Generally, two diversion tunnels are required to be arranged in a high arch dam project in the watershed of / s. However, the layout design of traditional diversion tunnels mainly considers the topography and geological conditions of the project, the layout of hub buildings and the characteristics of the general construction l...
Claims
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IPC IPC(8): E02B9/06
CPCY02E10/20
Inventor 张超王永刚付峥雷运华张有山
Owner POWERCHINA CHENGDU ENG