Diversion tunnel blocking gate detection system and detection method

Abstract

The invention belongs to the field of construction of hydraulic and hydroelectric engineering, and provides a diversion tunnel blockage gate detecting system simple in operation and capable of quickly detecting the sealing condition after the gate closing of a blockage gate, and a corresponding detecting method. The system comprises a water inlet tower, wherein a diversion tunnel is arranged in the water inlet tower; a blockage gate is arranged in an inlet of the diversion tunnel; and an operation room is arranged in the water inlet tower above the blockage gate. The system further comprises a detecting hole; the upper end of the detecting hole is communicated with the operation room, and the lower end is communicated with the diversion tunnel at the downstream of the blockage gate; and an openable blockage cover plate is arranged at the upper end of the detecting hole. The system is simple in operation, can immediately detect after the gate closing of the blockage gate, has no need to wait total discharge of water in the diversion tunnel, and has no need to pass through a longer tunnel at the downstream of the diversion tunnel, so that the needed detecting time can be largely shortened, the gate state inspection can be finished in a shortest time to quickly make such key decisions as renewed gate closing, and the plug construction difficulty caused by large water leakage at the later period is reduced.

Description

technical field [0001] The invention relates to the construction field of water conservancy and hydropower projects, in particular to a detection system for diversion tunnel plugging gates and a corresponding detection method. Background technique [0002] At present, according to the characteristics of water conservancy and hydropower projects, the elevation of the diversion tunnel is generally very low, and the water level in front of the reservoir rises very quickly after the plugging gate is closed. Generally, it is required to enter the diversion through the downstream within 1 to 2 hours. Check the sealing condition or water leakage of the blocking gate from the back of the blocking gate, so as to make timely adjustments; ensure that the sealing effect of the gate is good. Due to the rapid rise of the upstream water level, the time required for the entire inspection and observation is relatively high, otherwise the blocking gate will no longer be able to be lifted to r...

AI Technical Summary

Problems solved by technology

Due to the rapid rise of the upstream water level, the time required for the entire inspection and observation is relatively high, otherwise the blocking gate will no longer be able to be lifted to re-open the gate; if the sealing effect of the blocking gate is not good after the gate is closed, resulting in a large amount of water leakage, It will increase the difficulty of the construction of diversion tunnel plugs in the later stage

However, because the diversion tunnel downstream of the gate is generally long, it takes a long time to drain water in the tunnel, which often affects the progress of inspection personnel entering the tunnel and prolongs the inspection and observation time.

At present, power boats are used in many projects to enter the diversion tunnel. However, due to various conditions such as siltation in the tunnel, it is difficult for power boats to directly reach the back of the gate, which is inconvenient to operate and difficult to implement.

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