A kind of diversion hole plugging head exhaust structure and exhaust method
An exhaust method and technology of diversion tunnels, which are applied in water conservancy projects, hydroelectric power stations, hydroelectric power generation, etc., can solve the problems of difficult control of the exhaust process, poor construction operability, and unfavorable structural safety, and achieve good social and economic benefits. Benefit, short exhaust time, and the effect of saving engineering investment
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[0034] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0035] Such as figure 1 , figure 2 , image 3 As shown, the exhaust structure of a diversion tunnel plugging head according to the present invention includes a diversion cylinder 5 and a concrete plug 4 arranged in the inner sealing area of the diversion cylinder 5, and the bottom of the concrete plug 4 is pre- An exhaust pipe 1 and a drain pipe 2 are buried, and cofferdams 3 are arranged on the upstream and downstream sides of the concrete plug 4 in the guide tube 5, and a grouting gallery 13 and a grouting gallery are also arranged in the concrete plug 4. The gate well 14 that road 13 communicates with. With this technical solution, during construction, the cofferdam 3 is built before the concrete plug 4, and the pre-buried drainage pipe 2 is used to drain water, so as to provide dry ground conditions for the construction o...
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