1. Main reasons:
(1) Pipelines constructed by multiple disciplines lack a unified comprehensive arrangement. (2) Brutal construction and failure to comply with construction techniques and specifications.
2. Corrective measures:
(1) Arrange the pipe well pipe supports and hangers in a unified manner. (2) Replace unreasonable fixed brackets. (3) Strengthen on-site management and eliminate the use of electrical welding to open holes.
3. Preventive measures: (1) Strictly implement the requirements of Article 3.1.11 of the "Construction Quality Acceptance Specifications for Building Water Supply, Drainage and Heating Engineering" GB50242-2002. (2) Arrange the supports and hangers of the tube well pipes in a unified manner, and try to use comprehensive supports.
(3) Strengthen technical communication and require the use of mechanical drilling to ensure that the hole spacing matches the outer diameter of the pipe to prevent the appearance of a figure-eight shape.