RU1838507C - Method for restoring water-flooded underground structures - Google Patents

Abstract

Usage: construction, drainage of underground workings, restoration of flooded special underground structures. SUMMARY OF THE INVENTION: A chamber is installed at the entrance to the structure, after which the space between its walls and the structure is sealed by freezing. Compressed air is supplied to the structure and the location of the lintel is determined by the release of air bubbles on the surface of the water area. Water is displaced from the structure and a jumper is formed to separate the water source from the drained part of the structure. After creating the jumper, the compressed air supply is stopped. 1 ill.

Description

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The invention relates to the field of construction, drainage of underground workings, namely, the restoration of flooded special underground structures.

An object of the invention is to provide for the restoration of a structure in communication with the basin.

The drawing shows a flow chart of a method.

A method of restoring a flooded underground structure is as follows.

A chamber is installed at the entrance to the structure, after which the space between its walls and the structure is sealed by freezing. Compressed air is supplied to the structure and the air bubbles are detected on the surface of the water area.

jumper location. Water is displaced from the structure and a jumper is formed to separate the water source from the drained part of the structure. After creating the jumper, the compressed air supply is stopped.

The method is carried out using a device including a lock chamber 1 with a heat exchanger 2 located at the inlet 3 of the underground structure 4. Compressed air is supplied by the compressor 5 with an air duct 6, and cold production and freezing of the inlet are provided by a refrigeration machine 7 with a supply 8 and a return 9 pipelines. The jumper 10 between the structure and the water area of the pool, for example by the sea 11, is made in the form of wells 12. in which

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pipelines 13 for supplying liquid nitrogen are omitted.

The device operates as follows,

The chiller 7 through a pipe 8 delivers a refrigerant, for example liquid ammonia, to a heat exchanger 2, where the refrigerant is vaporized, providing a negative temperature at the inlet 3 of the structure 4. The water around the airlock 1 is frozen and tightly connects this chamber to the inlet 3. After freezing, the airlock chambers 1 enter compressor 3 into the inlet 3 of structure 4 and supply compressed air to the structure 4 through the air duct 6. The air pressure inside the structure rises and water is forced out of it into the sea through a breakthrough. The lowering of the water level in building 4 will occur until the level reaches the breakthrough mark. After that, the compressed air supplied by compressor 5 will exit through a breakthrough in the soil to the surface of the sea in the form of bubbles, while the breakthrough in the ground is visually determined, where a tight jumper 10 is constructed by drilling wells 12 and supplying them with liquid nitrogen through pipelines 13. After creating the jumper 10, the air pressure in the structure 4 is reduced. If the water level in the structure does not rise, that is, through the chamber 1 communicate with the atmosphere

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swarm, and the remainder of the water is removed by conventional means of drainage. If the water level in building 4 after increasing the air pressure in it rises, then the air pressure is raised again until the next breakthrough in the building, which communicates with the sea, is detected. After revealing breakthroughs in the structure, they are sealed.

The presence of a lock chamber 1 allows, during the drainage of building 4, the passage of people into it, which simplifies the search for the location of breakthroughs in the building.

The proposed method allows the restoration of unique structures.

Claims (1)

The claims A method of restoring a flooded underground structure, including installing a chamber at the entrance to the structure, supplying compressed air, draining water and creating a lintel, characterized in that, in order to ensure restoration of the structure in communication with the basin, after the camera is installed, the space between its walls and the structure is sealed by freezing, during the supply of compressed air, the location of the jumper is determined by the release of air bubbles on the surface of the water area, and after creating a jumper under Acha compressed air is stopped. R g about //