Construction method for towing underwater pipeline on sea

Abstract

The invention relates to a construction method for towing an underwater pipeline on sea. The construction method comprises the following steps that (1), the pipeline to be towed is tidied, and the underwater pipeline is made to float on the water surface under the effect of self buoyancy; (2), a safety warning identifier is installed on the pipeline; (3), air tightness of the pipeline is checked before towing; (4), the pipeline is connected to a tug through a mooring rope; (5), towing operation begins; (6), after the tug arrives at the destination, the mooring rope is untied, and a pipeline anchor is thrown; and (7), towing operation is completed. According to the construction method for towing the underwater pipeline on the sea, compared with an existing pipeline allocating and transporting manner, disassembling and secondary assembling of the pipeline are avoided, therefore time and cost are saved, on the occasion of needing to erect the pipeline urgently, the labor hour will not bedelayed, the links of disassembling, land transporting and secondary assembling are avoided, therefore the pipeline will not be damaged, and the quality of the pipeline will not be influenced after the pipeline comes into use again.

Description

technical field [0001] The invention belongs to the technical field of dredging construction, and in particular relates to a sea towing construction method of an underwater pipeline. Background technique [0002] During the implementation of dredging projects, the mutual transfer of sludge discharge equipment, that is, underwater sludge discharge pipelines between various construction sites is relatively frequent. In the past construction operations, the underwater mud discharge equipment was mostly transported by land. First, the existing underwater pipelines were disassembled, hoisted ashore, transported by car to the next project site, and then reassembled. Put it underwater again. The above-mentioned method of dismantling and transporting on land has many defects: First, the dismantling, transportation and secondary assembly of the underwater pipeline consume a lot of cost and time, and there are still certain safety risks in the dismantling, transportation and secondar...

AI Technical Summary

Problems solved by technology

The above-mentioned method of dismantling and transporting on land has many defects: First, the dismantling, transportation and secondary assembly of the underwater pipeline consume a lot of cost and time, and there are still certain safety risks in the dismantling, transportation and secondary assembly of the pipeline; Secondly, the secondary assembly of underwater pipelines has higher requirements on the site conditions, and land transportation is also more difficult. It is difficult to meet the time limit requirements in occasions where the demand for underwater pipelines is urgent; moreover, the loading and unloading, The pipeline equipment may be damaged in the transportation link, resulting in worrying about the quality of the underwater pipeline after the secondary assembly

Images