Blocking program of tail locks of diversion tunnel group

Abstract

The invention discloses a blocking program of tail locks of a diversion tunnel group. The blocking program comprises the following steps of firstly, blocking low-head water tail locks of diversion tunnels of the first batch to block water by adopting a low-capacity start and stop machine so as to protect temporary construction plugs, blocking water so as to protect permanent construction plugs ofthe diversion tunnels of the first batch after the temporary plugs are completed, and blocking conventional high-head water tail locks of diversion tunnels of the second batch to block water by adopting a conventional high-capacity start and stop machine so as to protect permanent construction plugs of the diversion tunnels of the second batch, so that the tail locks of the whole diversion tunnelgroup are blocked after all of the permanent plugs of the diversion tunnels are constructed and water retaining conditions are supplied. According to the blocking program, the capacity of the water retaining heads and the start and stop machines of the blocking locks of part of diversion tunnels in the prior art can be obviously reduced, the engineering investment is saved, the safety and the economy of the tail lock blocking period of the diversion tunnels are increased, and the blocking program is innovative on the basis of an existing blocking program of the tail locks of the diversion tunnels.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, and more specifically relates to a procedure for closing gates of a group of diversion tunnels. Background technique [0002] In the construction of water conservancy and hydropower projects in mountainous rivers, the construction diversion scheme of cofferdams blocking the riverbed at one time and diversion tunnels for diversion is usually adopted during the construction period. For rivers with large runoff, two or more diversion tunnels are often arranged to form a group of diversion tunnels. After the diversion tunnel group completes the task of diversion and discharge, it must be blocked by lower gates to meet the requirements of water storage and power generation. After the diversion tunnel group is lowered, in order to meet the requirements of water discharge during the construction period, the diversion bottom hole, the middle hole of the dam body or th...

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