Diversion tunnel structure capable of overhauling lock chamber sections of tunnels

Abstract

The invention discloses a diversion tunnel structure capable of overhauling lock chamber sections of tunnels, and belongs to the field of hydraulic engineering. The diversion tunnel structure comprises a diversion tunnel body and an overhaul water conveying tunnel, wherein the upstream section of the diversion tunnel body is an overhauled tunnel in which a lock chamber structure is arranged; the entrance of the overhaul water conveying tunnel is connected with the upstream watercourse; the exit of the overhaul water conveying tunnel is connected with the diversion tunnel body and the connection position is located at the downstream of the lock chamber structure; an overhaul lock chamber is arranged at the tunnel body section of the overhaul water conveying tunnel; and the overhaul lock chamber is provided with a gate. According to the diversion tunnel structure, the overhaul water conveying tunnel is arranged beside the diversion tunnel body, and the overhaul water conveying tunnel is utilized to overhaul the lock chamber of the diversion tunnel during the water supply period so that the smooth locking of the gate of the diversion tunnel and the power generation benefit are ensured; and meanwhile, after the overhauled diversion tunnel is locked, the ecological flow of the watercourse can be discharged downstream through the overhaul water conveying tunnel, so as to ensure the downstream ecological stability.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a diversion tunnel structure capable of overhauling tunnel sluice sections. Background technique [0002] In the construction of water conservancy and hydropower projects, especially in the alpine and valley areas, tunnels are usually used to guide the original river flow from the upstream cofferdam to the downstream cofferdam, so that permanent hydraulic structures can be kept on dry ground for construction. After the construction diversion task is completed, it is necessary to lower the gate and seal the diversion tunnel. Due to the low elevation of the layout of the diversion tunnel, the problem of sliding mass erosion is prominent, and it is easy to cause erosion damage to the tunnel lock chamber and the embedded parts of the door slot. In order to ensure the smooth closure of the lower gate of the diversion tunnel, it is necessary to conduct a comprehensive insp...

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Problems solved by technology

[0003] In order to overcome the disadvantages that the existing diversion tunnel structure cannot be inspected and repaired, and the downstream ecological environment will be affected after the tunnel is blocked, the technical problem to be solved by the present invention is: to provide a lock chamber that can be inspected and maintained, and can continue to serve the downstream Diversion tunnel structure for water supply

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