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Resistivity static sounding probe

A static penetration and resistivity technology, applied in the direction of material resistance, etc., can solve the problem of limited basic physical and mechanical properties of soil layers.

Inactive Publication Date: 2010-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on the new type of static CPT sensor started relatively late in China. At present, the static CPT of single and double bridges widely used in China can only test the penetration resistance or specific penetration resistance, side wall friction resistance, and the basic soil layer that can be determined. Very limited physical and mechanical properties

Method used

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Embodiment Construction

[0015] The outer circumference of the upper half of the resistivity static penetration probe of the present invention is wrapped with two ring electrodes 2, and the two sides of the ring electrodes 2 are insulating layers 1; the lower half of the probe is provided with a three-component geophone 3, and The lower part of the three-component geophone 3 is provided with an inclinometer 4, the friction cylinder 5 is located below the inclinometer 4, a pore water pressure sensor 6 is arranged in the middle of the friction cylinder 5, and a probe 7 is connected below the friction cylinder 5 , The pore pressure filter ring 8 is located at the connection between the friction cylinder 5 and the probe 7 . The cone angle of the probe 7 is 60°, and the cross-sectional area of ​​the cone bottom is 10cm 2 .

[0016] The probe integrates the functions of conventional static penetration testing (measurable end resistance, friction resistance, inclination and pore pressure) and soil resistivi...

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Abstract

The invention discloses a resistivity static sounding probe. The periphery of the first half section of the resistivity static sounding probe is wrapped with two annular electrodes (2), and both sides of the annular electrodes (2) are provided with insulating layers (1); the second half section of the resistivity static sounding probe is provided with a three-component seismic detector (3); the lower part of the three-component seismic detector (3) is provided with a clinometer (4); a friction drum (5) is positioned below the clinometer (4); the middle of the friction drum (5) is provided with an interstitial water pressure sensor (6); a probe (7) is connected below the friction drum (5); and a pore-pressure filter ring (8) is positioned at the connection position of the friction drum (5) and the probe (7). The resistivity static sounding probe has the advantages of home position, fastness, accuracy, economy and the like and provides a powerful detection tool for the foundation treatment practice of civil engineering.

Description

technical field [0001] The invention relates to a resistivity static sounding probe, which belongs to a static sounding device capable of continuously analyzing and testing the in-situ resistivity of soil layers in the field of geotechnical engineering. Background technique [0002] Static CPT technology refers to using a pressure device to press a penetrating rod with a probe into the test soil layer, and through the measurement system to test the cone tip resistance and side wall friction resistance of the soil, some basic physical properties of the soil can be determined. Mechanical properties, such as the deformation modulus of the soil, the allowable bearing capacity of the soil, etc. The static penetration technology has a history of more than 80 years. Static CPT is widely used in the world, partially or completely replacing drilling and sampling in engineering investigation. In 1965, our country first successfully developed the electric measuring type static penetr...

Claims

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Application Information

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IPC IPC(8): G01N27/04
Inventor 刘松玉蔡国军童立元
Owner SOUTHEAST UNIV
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