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Device and method for detecting porosity of saturated soil

A technology of porosity and measuring devices, which is applied in measuring devices, suspension and porous material analysis, permeability/surface area analysis, etc., can solve the problems of difficult promotion, long measurement period and high cost, and achieve simple operation method and long measurement period. Short, accurate results

Inactive Publication Date: 2013-05-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] The purpose of the embodiments of the present invention is to provide a method for detecting the porosity of saturated soil, which aims to solve the problems of large errors, high costs (equipment costs and high usage costs) of the current methods, and limited conditions that are difficult to popularize , and some have various deficiencies such as long measurement period, especially the problem of poor operability in the field

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  • Device and method for detecting porosity of saturated soil
  • Device and method for detecting porosity of saturated soil
  • Device and method for detecting porosity of saturated soil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] First collect soil samples. During the sampling process, the soil samples shall not be compressed, squeezed or twisted. After the collection is completed, avoid vibration damage to the soil structure during transportation; use a ring knife (1) to cut the test soil samples according to the Water permeability selects different methods (immersion saturation method, capillary saturation method, air extraction saturation method) to prepare saturated soil samples; the stainless steel electrodes (3, 4) are connected through the connection (12) and the connection (13) and the impedance tester ( 14) Connect, use the frequency selector (15) to set the electrical signal frequency f, use the level adjuster (16) to set the impedance test voltage; use the impedance tester (14) to test the impedance value of the saturated soil sample, use the computer (17) Automatically calculate the resistivity ρ of the saturated soil sample 0 .

[0053] The stainless steel electrodes (10, 11) of the pl...

Embodiment 2

[0056] First collect soil samples. During the sampling process, the soil samples shall not be compressed, squeezed or twisted. After the collection is completed, avoid vibration damage to the soil structure during transportation; use a ring knife (2) to cut the test soil samples according to the Different methods (immersion saturation method, capillary saturation method, suction saturation method) are selected for water permeability to prepare saturated soil samples; the stainless steel electrodes (7, 8) are connected through the connection (12) and the connection (13) and the impedance tester ( 14) Connect, use the frequency selector (15) to set the electrical signal frequency f, use the level adjuster (16) to set the impedance test voltage; use the impedance tester (14) to test the impedance value of the saturated soil sample, use the computer (17) Automatically calculate the resistivity ρ of the saturated soil sample 0 .

[0057] The stainless steel electrodes (10, 11) of the ...

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Abstract

The invention discloses a measurement device for detecting the porosity of saturated soil and an application method of the device. The measurement device comprises a cutting ring, a stainless steel electrode, a cutting ring, an organic glass box and an impedance tester. When the impedance of a soil sample is measured, the cutting ring is selected according to the property of the soil sample; the stainless steel electrode is connected with the impedance tester through a connecting wire; when the impedance of pore water is measured, the organic glass box is selected and the stainless steel electrode is connected with the impedance tester through the connecting wire; and a frequency selector and an electric level adjuster are connected with a computer through the impedance tester. The device disclosed by the invention can be used for collecting the soil sample, preparing the saturated soil sample, setting electric signal frequency and impedance testing voltage and determining the resistivity of the saturated soil and pore water; and soil properties and cementation factors are selected according to the property of the soil sample and the porosity is obtained by the computer. The measurement device disclosed by the invention has the characteristics of simplicity and feasibility, low cost, short measurement period, accurate result and the like; expensive equipment is not needed and an operation method is simple; and the measurement device can be operated in a laboratory or a filed and the practical applicability is very high.

Description

Technical field [0001] The invention belongs to the technical field of soil pore analysis methods, and in particular relates to a device and a detection method for detecting the porosity of saturated soil. Background technique [0002] Soil porosity (n) is the pore volume between soil particles (V V ) The ratio of the total soil volume (V) is an important physical property index reflecting the degree of soil compaction. At present, there are many methods for the analysis of soil pores, including empirical calculation methods, mercury intrusion method, image processing method, barometric hydrometer method, water absorption method, and bulk density conversion algorithm. Some of these methods have large errors, some have high costs (equipment costs, high usage fees), some have long measurement cycles, and some are difficult to promote due to limited conditions. Aiming at the defects of existing methods, this technical solution can be very good Make up for their shortcomings. [0003...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 董晓强周伟曾国红白晓红
Owner TAIYUAN UNIV OF TECH
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