Horizontal continuous measuring method for soil mass parameters of soft soil site

A technology of soil parameters and measurement methods, applied in the field of research, can solve problems such as inability to achieve horizontal long-distance soil measurement

Active Publication Date: 2019-11-05
DALIAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that the existing experimental methods cannot realize the measurement of soil parameters in the horizontal l...

Method used

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  • Horizontal continuous measuring method for soil mass parameters of soft soil site
  • Horizontal continuous measuring method for soil mass parameters of soft soil site
  • Horizontal continuous measuring method for soil mass parameters of soft soil site

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Experimental program
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Embodiment

[0041] This embodiment is a method for laterally continuous measurement of soil parameters in soft soil sites. The experimental method provided in this embodiment is simple and can achieve continuous measurement of soil parameters across long distances. It can be used to serve underwater pipelines, cables and other structures. Design and construction.

[0042] See figure 1 The experimental method for laterally continuous measurement of soft soil field parameters provided in this embodiment can be completed by a horizontal dragging device. The towing device includes the towing structure main body 4, the CPT probe 5, the friction plate 6, the T-bar probe 7, the towing pull ring 8, the towing structure top plate 9, the towing structure hollow ribs 10, the CPT probe mounting support 11, and the tension and compression sensor 12. And T-bar fixed support 13. The CPT probe 5 is connected with the CPT probe mounting support 11, the friction plate 6 is connected with the tension and comp...

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Abstract

The invention belongs to the technical field of researches such as rock-soil, geology and environment, and provides a horizontal continuous measuring method for soil mass parameters of a soft soil site. The horizontal continuous measuring method for the soil mass parameters of the soft soil site comprises the following main measuring steps of arranging soil mass strength measuring devices at the front end of a towing device, arranging soil mass strain softening relationship measuring devices at the bottom end of the towing device, and measuring interface friction parameters between a soil massand a structure, wherein the towing device actively or passively walks in a soft soil layer, a part of the towing device in walking is ensured to penetrate into a soil layer to be measured, and the penetration depth of the towing device is controlled through adjusting balance weight above the towing device and a towing angle of the towing device. The method provided by the invention breaks through the limitation that the horizontal continuous soil mass parameters cannot be acquired through a traditional single-point vertical measuring method, and can accomplish the horizontal long-distance continuous field measurement of the parameters such as the soil mass strength, the strain softening, and the interface friction effect between the soil mass and the structure through a one-time towing test; and the measured parameters can be used for guiding design and construction of projects such as breakwater projects, oil and gas offshore pipelines, cables and optical cables.

Description

Technical field [0001] The invention belongs to the research technical field of geotechnical, geology and environment, and relates to a method for laterally continuous measurement of soil parameters of soft soil sites. The method is particularly suitable for the design of underwater pipelines and the investigation of soil parameters before construction. Background technique [0002] Accurate measurement of soil parameters is the foundation of all projects. As a kind of poor soil, soft soil generally has the characteristics of high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, and poor water permeability. Therefore, the design and construction of soft soil sites are relatively risky. In engineering practice, realizing accurate measurement of soil parameters on soft soil sites is an important way to reduce engineering risks and optimize engineering design, and a...

Claims

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Application Information

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IPC IPC(8): E02D1/00
CPCE02D1/00E02D1/025B63B21/66B63G8/42B63C11/52E02F5/105F16L1/16E02D1/022
Inventor 于龙韩云瑞杨庆
Owner DALIAN UNIV OF TECH
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