Water proofing and leak repairing construction method for sewage pipe network below underground water level

Abstract

The invention discloses a water proofing and leak repairing construction method for a sewage pipe network below the underground water level. The method is performed through the following steps that 1, sewage removal is performed on a pipeline; 2, leak points are found and marked; 3, a precipitation well is drilled, and precipitation processing is performed on a construction well point; 4, leaking stoppage is performed on the interior of the pipeline; 5, a grouting hole is drilled, and cement paste is backfilled and grouted. According to the method, a lining pipe does not need to be used, the construction cost is saved by 50% compared with the method that water proofing and leak repairing are performed on the sewage pipe network in a lining pipe mode, and the high application and popularization value is achieved; the actual available pipe diameter of the sewage pipeline cannot be reduced, and the phenomenon that the drainage capacity of the sewage pipeline is reduced due to water proofing and leak repairing cannot occur; by grouting on the exterior of the pipeline to form a grouting layer at the periphery of the sewage pipeline, the strata at the periphery of the sewage pipeline is reinforced, and effective protection on the sewage pipeline is formed to prevent formation stress from destroying the sewage pipeline.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to the waterproof and leakage repair of municipal underground pipe networks. Background technique [0002] The urban sewage pipe network includes sewage pipes buried underground. There are several inspection wells at intervals along the length of the sewage pipes. Adjacent inspection wells are generally separated by hundreds of meters (such as 500 meters). [0003] After long-term use of sewage pipes, a large amount of dirt is easy to deposit in them, and the pipes may be partially cracked. Sewage pipes are generally connected by multi-section pipes, and the joints of pipes are also prone to poor sealing after long-term use. In the case of a high urban groundwater level, groundwater will seep into the sewage pipes through damaged pipes and poorly sealed pipe joints. On the one hand, groundwater is wasted, and on the other hand, the workload of sewage treatment plants is greatly...

AI Technical Summary

Problems solved by technology

[0005] 1. High cost

The cost of HDPE pipe and stainless steel pipe is relatively high, and the construction cost is relatively high

[0006] 2. After lining the pipeline, it means that the original sewage pipeline is abandoned, resulting in waste of resources; and the diameter of the lining pipe must be smaller than the diameter of the original sewage pipeline, resulting in the actual diameter of the sewage pipeline shrinking, which does not conform to the design of the original sewage pipeline Require

[0007] 3. There is no protection for the sewage pipeline, and it cannot cope with the damage caused by the stress change of the stratum structure to the sewage pipeline

Images