Simulation test method for falling impact of submarine pipeline

Abstract

The invention relates to a simulation test method for a falling impact of a submarine pipeline. The system is composed of a test tower, a test pipeline support foundation, a falling object group and alifting and releasing mechanism. The method comprises: a test pipeline is arranged on a predetermined test pipeline support foundation and is fixed and the test tower is moved to be above a target test pipeline; a rotation handle is rocked and thus a lifting cable is able to lift the falling object group; the location of the test tower is adjusted slightly, a falling object contact is arranged right above the test pipeline, and a guiding rod and the falling object group are adjusted in a rotation manner to be at a predetermined deflection angle; the rotation handle is rocked to roll up the lifting cable and thus the falling object group is lifted at a predetermined height; and connection of bolts and nuts in releasing buckles is loosened and thus the falling object group makes free falling body movement under the effect of the gravity, and the test pipeline under the test tower is impacted along a predetermined horizontal angle, so that the falling object impact process is completed.According to the invention, the used test system has a simple structure; processing, installation and dismounting become easy; the construction cost is low; and the state control performance is good.

Description

Technical field [0001] The invention belongs to the technical field of development, operation and maintenance of offshore oil and gas projects, and relates to a simulation test system for the impact of falling objects on submarine pipelines. Background technique [0002] The 21st century is the century of the ocean, and it is an important proposition both for China and the world. The ocean is a new and important resource space on which human beings rely for development in the new century. Accelerating the development of the ocean has become the consensus of all marine countries. Traditional marine resources represented by oil and natural gas have been continuously improved and expanded in development technology, and new marine resources such as combustible ice and seabed mineral deposits have also attracted more and more attention from engineering developers. In marine resources development technology, submarine pipelines play an irreplaceable role, providing basic conditio...

AI Technical Summary

Problems solved by technology

However, many test systems only study quasi-static effects, scale ratio pipes, or there are problems such as inaccurate impact attitude control, single pipe support form, and limited types of impact contact shapes, which make the experimental research work always have certain limitations.

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