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A method for lateral continuous measurement of soil parameters in soft soil sites

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

Active Publication Date: 2021-02-19
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • 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 long distance, the present invention proposes a method that can realize the continuous measurement of soil parameters in the horizontal direction

Method used

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  • A method for lateral continuous measurement of soil parameters in soft soil sites
  • A method for lateral continuous measurement of soil parameters in soft soil sites
  • A method for lateral continuous measurement of soil parameters in soft soil sites

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Embodiment

[0041] This embodiment is a horizontal continuous measurement method of soil parameters in soft soil sites. The experimental method provided in this embodiment is simple and can realize continuous measurement of horizontal long-distance soil parameters, which can be used for underwater pipelines, cables and other structures. design and construction.

[0042] see figure 1 , the experimental method for continuously measuring the parameters of the soft soil site provided in this embodiment can be completed by dragging the towing device horizontally once. The towing device includes a towing structure main body 4, a CPT probe 5, a friction plate 6, a T-bar probe 7, a towing ring 8, a towing structure top plate 9, a towing structure hollow rib plate 10, a CPT probe mounting support 11, and a tension and pressure sensor 12 And T-bar fixed support 13. The CPT probe 5 is connected to the CPT probe mounting support 11 , the friction plate 6 is connected to the tension and pressure sen...

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Abstract

The invention belongs to the research technical fields of rock and soil, geology and environment, and provides a method for continuously measuring soil parameters in a soft soil site. The main measurement steps are as follows: a soil strength measuring device is arranged at the front end of the towing device, and a soil strength measuring device is arranged at the bottom of the towing device. Body strain softening relationship measurement device and interface friction parameter measurement between soil and structure, the towing device actively or passively walks in the soft soil layer to ensure that the towing device partially penetrates into the soil layer to be tested during walking, and adjusts the upper part of the towing device The counterweight and dragging angle control its penetration depth. The method proposed in the present invention breaks through the limitation that the traditional single-point vertical measurement method cannot obtain horizontal continuous soil parameters, and can complete the lateral measurement of parameters such as soil strength, strain softening, and interface friction between soil and structures through a drag test. Long-distance continuous on-site measurement, the measured parameters can be used to guide the design and construction of breakwater projects, submarine oil and gas pipelines, cables, optical cables and other projects.

Description

technical field [0001] The invention belongs to the research technical field of rock and soil, geology and environment, and relates to a method for continuous lateral measurement of soil parameters in soft soil sites. The method is especially 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 basis of all engineering implementation. As a kind of bad 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 risks of soft soil sites are relatively high. In engineering practice, accurate measurement of soil parameters in soft soil sites is an important way to reduce engineering risk and optimize engineering desig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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