Device and experimental method for simulating influence on pipeline project by seabed tide sand waves

A technology for pipeline engineering and submarine pipelines, which is applied in the fields of marine engineering, sediment kinematics, and ocean surveying, and can solve problems such as small terrain scales

Inactive Publication Date: 2018-11-16
TIANJIN UNIV
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Problems solved by technology

At present, in the laboratory, waves or unidirectional flow are mainly used to simplify the replacement of tidal currents, but the obtained topographic scale i

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  • Device and experimental method for simulating influence on pipeline project by seabed tide sand waves
  • Device and experimental method for simulating influence on pipeline project by seabed tide sand waves
  • Device and experimental method for simulating influence on pipeline project by seabed tide sand waves

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Embodiment Construction

[0029] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] A device for simulating the impact of seabed tidal sand waves on pipeline engineering, including an experimental water tank and a tidal system 1, a terrain scanning system 2, a submarine pipeline simulation measurement system 3, data acquisition and processing and a controller 4,

[0031] The experimental water tank and tide generation system 1 includes a water tank 11, a circulation pipeline 12, a gentle slope bunker 13, a two-way frequency conversion water pump 14, a frequency conversion controller 15 and a flow rate meter 16; The middle depression forms a cavity for containing sea sand, and the raised part is connected to the bottom of the tank through a gentle slope 17, and the height of the gentle slope 17 gradually decreases; specifically, the cross-section of the gentle slope 17 is a right-angled triang...

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Abstract

The invention discloses a device and experimental method for simulating influence on a pipeline project by seabed tide sand waves. The device includes an experimental sink and tide generating system,a terrain scanning system, a seabed pipeline simulation measurement system and a data acquisition and processing controller. The experimental sink and tide generating system is used for simulating seabed sand slopes and utilizing a water pump for forming reciprocating current. The terrain scanning system collects forms of the sand slopes by utilizing an ultrasonic topographic instrument and transmits data to the data collecting and processing controller. The seabed pipeline simulation measurement system utilizes optical fiber strain sensors arranged on the side walls of a pipeline model to collect pipeline deformation data, utilizes a high speed camera to collect pipeline displacement information and transmits the information to the data collection and processing controller. By adopting the device provided by the invention, experiments studying influence on the pipeline project by seabed tide sand waves can be conducted. According to the invention, the water pump is utilized for forming a periodically changing water current simulation tide field, in combination with the formation of tide sand slopes, influence on seabed pipelines by sand waves is simulated. The collected data is real and the reference value is high.

Description

technical field [0001] The invention relates to the fields of marine engineering, sediment kinematics and marine measurement, in particular to a device and an experimental method for simulating the influence of seabed tidal sand waves on pipeline engineering. Background technique [0002] With the development of offshore oil and gas resources, submarine pipelines have become the main way of offshore oil and gas transportation. Submarine sand wave is a typical submarine geomorphology with approximately wavy distribution. The wavelength scale is from a few meters to hundreds of meters, and the wave height is about a few meters. It is widely distributed in the offshore continental shelf sea area. Ocean observation data show that tidal currents are one of the main reasons for the formation of seabed sand waves. Submarine sand waves are generally active. In some cases, submarine sand waves will move rapidly, causing the exposure or suspension of submarine pipelines, which will e...

Claims

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Application Information

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IPC IPC(8): G01M99/00
CPCG01M99/00
Inventor 臧志鹏陈志雄王琮刘振纹
Owner TIANJIN UNIV
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