Large-burial-depth high-underground-water-level difficult-precipitation pipeline water stopping and repairing structure and repairing method thereof

Abstract

The invention discloses a water stopping and repairing structure for a large-burial-depth and high-underground-water-level pipeline difficult to dewater. The device comprises a flow guide pump, a pipeline plugging device, a liquid nitrogen cooling device, a cooling hose, a flow guide pipeline, a pipe making machine and a water suction pump, the flow guide pump, the pipeline plugging device, the pipe making machine and the water suction pump are all arranged in the current pipeline; an inspection well is arranged on the current pipeline and is communicated with the current pipeline; the inspection well comprises a first inspection well, a second inspection well, a third inspection well and a fourth inspection well; the guide pump is positioned below the first inspection well; the water suction pump is positioned below the third inspection well; one end of the cooling hose is connected with the liquid nitrogen cooling device, and the other end penetrates through the second inspection well and is located in a to-be-repaired area in the current pipeline; the pipe making machine is located in the to-be-repaired area. The device can repair the drainage pipeline in a full water state, and is high in efficiency and good in repair effect. The invention further discloses a repairing method of the large-burial-depth high-underground-water-level difficult-precipitation pipeline water stopping repairing structure.

Description

technical field [0001] The invention relates to the technical field of municipal engineering, in particular to a water-stop repairing structure for a pipeline with a large buried depth and a high groundwater level that is difficult to dewater. The invention also relates to a repairing method for the water-stop repairing structure of the pipeline with large buried depth and high groundwater level that is difficult to dewater. Background technique [0002] CCTV, QV and other technologies are often used to detect drainage pipelines, and CIPP is often used for trenchless repair. These technologies require no water in the pipeline or a low water level. Pipes crossing rivers, etc., the flow rate is high, the amount of groundwater infiltration is large, and the water in the pipes cannot be drained after plugging, resulting in difficult pipe sections. This type of pipe section has serious water infiltration and is difficult to water (that is, it cannot be drained after being pumped...

AI Technical Summary

Problems solved by technology

At present, the restoration process needs to be operated without water or under the condition of a small amount of water, and the restoration work cannot be carried out under the state of full water

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