Air gun active seismic source floating platform drifting steel wire suspension control structure

A suspension control, active source technology, applied in seismology, measuring devices, instruments, etc., can solve the problem of the floating platform deviating from the original position, and achieve the effect of preventing drift

Inactive Publication Date: 2016-08-24
SEISMOLOGICAL BUREAU OF GANSU PROVINCE CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are strong winds and waves on the water surface of the reservoir every day, and there is a strong current after the air gun is excited, which makes the floating platform obviously deviate from the original position

Method used

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  • Air gun active seismic source floating platform drifting steel wire suspension control structure
  • Air gun active seismic source floating platform drifting steel wire suspension control structure
  • Air gun active seismic source floating platform drifting steel wire suspension control structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, the present invention discloses an air gun active source floating platform drifting steel cable suspension control structure, which includes a horizontal fixing device for the floating platform, a vertical fixing device for the floating platform and a vertical weight 4 .

[0020] Structural design:

[0021] The horizontal fixing device of the floating platform is a number of long steel cables 2, which are placed across the water surface of the floating platform 1 and connected with the two banks or the piles on both sides. The bottom is connected with the floating platform 1 through movable pulleys, and the bottom of each longitudinal steel cable 3 is connected with a vertical weight 4.

[0022] Wherein, the long steel cable 2 and the longitudinal steel cable 3 are three-twisted steel wire ropes, which are composed of steel wires, strands, and lining cores, and the long steel cables 2 and the longitudinal steel cables 3 are coated with steel ...

Embodiment 2

[0024] Purpose and method of the experiment: In order to verify the effectiveness and feasibility of the present invention, this embodiment conducts the verification of the control structure of the air gun active source floating platform drifting cable suspension through mechanical analysis and experiments.

[0025] Experimental results:

[0026] Such as figure 2 Shown, in the present invention, 3 steel cables in 6 longitudinal steel cables 3 are subjected to tension respectively as T1, T2, T3, and the stressed situation of 3 steel cables on the other side of floating platform 1 is the same as figure 2 exactly the same. If the gravity of each vertical weight block 4 is mg, the buoyancy force of water on the vertical weight block 4 is f, and the friction forces of the three stress-bearing parts of the floating platform 1 are f1, f2, f3 respectively, it is assumed that the floating platform 1 deviates The distance is Δx, let

[0027] G=mg-f (1);

[0028] Then the vertical ...

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PUM

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Abstract

The invention relates to an earthquake-proof fortification design field, and discloses an air gun active seismic source floating platform drifting steel wire suspension control structure comprising a floating platform horizontal fixing device, a floating platform vertical fixing device, and a hanging weight. An excitation floating platform fixing device is designed independently by adopting structure optimization, and is used to adjust a floating platform to be capable of being lifted upwards and downwards freely along with water level, and at the same time, the drifting problem of the excitation floating platform can be well solved. The air gun active seismic source floating platform drifting steel wire suspension control structure is advantageous in that the requirement on the observation precision of the artificial air gun seismic source requirement can be satisfied by adopting the application of the technical scheme provided by the invention; the reasonably-designed floating platform drifting steel wire suspension control structure adopts the horizontal fixing device, the vertical fixing device, and the hanging weight, and then the drifting of the air gun floating platform is prevented, and the defect of the conventional way of fixing the floating platform by using the steel cables and the rivets can be overcome.

Description

technical field [0001] The invention relates to the field of anti-seismic fortification design, in particular to an air gun active seismic source floating platform drifting steel cable suspension control structure. Background technique [0002] Seismic waves carry rich parameter information when propagating in the earth’s medium, which provides a research method for exploring the earth’s internal structure, material composition, and dynamic changes. Therefore, earthquakes are said to be a bright light that illuminates the earth’s interior (Chen and Zhu Rixiang, 2005, established Proposals for the "Underground Beacon Research Program", Advances in Earth Sciences, 20(5), 485-489). Active source repeated detection is referred to as active source. It uses a large-capacity air gun as the source for continuous excitation, obtains artificial source signals to study travel time and waveform changes, and conducts regular "B-ultrasound detection" of regional underground media. Compar...

Claims

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Application Information

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IPC IPC(8): G01V1/133
CPCG01V1/133
Inventor 张元生郭晓魏从信秦满忠刘旭宙沈旭章颜文华邹锐郭瑛霞张丽峰
Owner SEISMOLOGICAL BUREAU OF GANSU PROVINCE CHINA EARTHQUAKE ADMINISTRATION
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