Large hole underground quick blocking method

Abstract

The invention discloses a large hole underground quick blocking method. The large hole underground quick blocking method comprises the following steps: (1) an underwater blocking position is determined; (2) an underwater blocking construction channel and path are determined; and an underwater operation platform is provided; (3) the length of a blocking body is calculated; (4) a first brick wall isbuilt to reduce the water flowing speed in a hole and the scour of water currents to the blocking body; (5) a flat pressing communicating pipe is arranged in middle of the first brick wall; (6) whenthe first brick wall is constructed to reach a needed height, concrete precast blocks are built at the back part of the first brick wall, and the flat pressing communicating pipe is embedded; (7) blocks are filled for blockage of the flat pressing communicating pipe to cut off the water currents of the hole; and (8) a second brick wall is built at the back parts of the concrete precast blocks; after building, special waterproof mortar is used for coating the surface and blocking joints; and a back support platform is built at the back part of the second brick wall. The method guarantees the stability of the blocking body, and improves the construction efficiency.

Description

technical field [0001] The invention relates to the construction field of underwater plugging of large holes, in particular to a rapid underwater plugging method for large holes, which ensures safe and efficient sealing of large holes. Background technique [0002] In large-scale water conservancy and hydropower projects, there is often flow through large underwater holes. After completing the flow task, it needs to be blocked. When the blockage is carried out underwater, the construction is more difficult. At present, there are several problems in underwater sealing construction: 1. The underwater situation is complicated, and when the underwater sealing position is far away from the outside world, the transportation of sealing materials is inconvenient; 2. The structure of the sealing body is complicated and the construction is difficult; 3. 1. The cost of the plugging material is expensive, and the cost of the plugging construction is high; 4. The plugging is affected by ...

AI Technical Summary

Problems solved by technology

At present, there are several problems in underwater sealing construction: 1. The underwater situation is complicated, and when the underwater sealing position is far away from the outside world, the transportation of sealing materials is inconvenient; 2. The structure of the sealing body is complicated and the construction is difficult; 3. 1. The cost of plugging materials is expensive, and the cost of plugging construction is high; 4. The plugging is affected by water pressure, and it is difficult to ensure the stability of the plugging body when the construction is too fast

It is precisely because of the existence of these problems that the underwater sealing construction is difficult, the construction period is long, and a lot of manpower and material resources are consumed.

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