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A test device for measuring the subsidence of saline soil

A test device and measuring device technology, applied in soil material testing, material inspection products, etc., can solve problems such as economic loss, corrosion, strength reduction, etc., and achieve the effect of improving accuracy

Active Publication Date: 2021-11-23
THE THIRD ENG CO LTD OF CHINA RAILWAY SEVENTH GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When construction is carried out in saline soil areas, due to flooding of the foundation and the dissolution of salts in water, the strength is significantly reduced and corrosion occurs, resulting in serious instability of the foundation and causing great economic losses to the country.
[0003] In addition, there are still many practical problems about the dissolution of saline soil in engineering survey, geotechnical test, engineering design and construction, and further research is still needed.

Method used

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  • A test device for measuring the subsidence of saline soil
  • A test device for measuring the subsidence of saline soil
  • A test device for measuring the subsidence of saline soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see Figure 1-3 , in an embodiment of the present invention, a test device for measuring the subsidence of saline soil, including a sample storage device 1, a loading device 2, a water injection device 3 and a measuring device 4;

[0037] The sample storage device 1 is used to fill the soil to be tested. The sample storage device 1 includes a cylindrical cylinder with an open upper end, and the side wall of the cylindrical cylinder is provided with at least one set of round holes along its axis direction. Group 11, each group of round holes 11 includes at least two round holes 12 arrayed on the outside of the cylindrical barrel, and each round hole 12 is equipped with a rubber plug 13 for blocking.

[0038] The diameter of the circular hole 12 is 5 cm, and the inner diameter, height and thickness of the cylindrical barrel are respectively: 100 mm, 200 mm and 10 mm.

[0039] The loading device 2 is used for compacting the soil packed inside the cylindrical cylinder, and...

Embodiment 2

[0046] The difference from Example 1 is: the number of the circular hole groups 11 is three groups, and the distance between adjacent circular hole groups is 30cm;

[0047] The first group of round hole groups includes two round holes 12 with a diameter of 5 mm; the first group of round hole groups 11 has a second group of round hole groups 11 at 30 mm, and the second group of round hole groups 11 includes two diameters. The circular hole 12 of 5mm; the second group of circular hole group 11 has a third group of circular hole group 11 at 30mm, and the third group of circular hole group 11 includes two circular holes 12 with a diameter of 5mm.

[0048] The working principle of the present invention: under the use state, according to the test requirements, add different contents of saline soil into the sample storage device 1, use the fixed cover and apply weight 24 to compact the saline soil sample, after compaction , according to the content of the soil sample in the sample st...

Embodiment 3

[0050] see Figure 3-4 In order to prevent the detection of the collapse from being affected by the adsorption force generated between the periphery of the soil column and the inner wall of the cylinder, the sample storage device 1 is also provided with an auxiliary dividing part 5, and the auxiliary dividing part 5 includes a cylindrical The fixed ring 51 on the upper port of the cylinder, the fixed ring 51 is connected to the split rod 52 through the positioning rod, and the split rod 52 is arranged in the gap between the lower cover 21 and the inner wall of the cylindrical cylinder, and the split rod 52 is connected to the lower There is no contact between the covers 21, and a drive motor 56 is installed on the outside of the cylindrical barrel, and the output end of the drive motor 56 is provided with a power gear 55 that meshes with the driven gear ring on the outside of the fixed ring 51, through which the drive motor 56 Cooperate with the gear transmission to drive the ...

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Abstract

The invention discloses a test device for measuring the subsidence of saline soil, which comprises a sample storage device, a loading device, a water injection device and a measuring device; the sample storage device is used to fill the soil to be tested, and the test The sample storage device includes a cylindrical barrel with an open upper end, and the side wall of the cylindrical barrel is provided with at least one group of round holes along its axis, and each group of round holes includes at least two arrays distributed on the outside of the cylindrical barrel. This device can adjust the amount of soil samples according to different requirements and different soil properties, and conduct simulation tests; this device can effectively observe the test phenomenon and progress through transparent glass; this device can improve the angle of water injection and How much, based on the above reasons, the present invention can be widely promoted in fields such as saline soil dissolution subsidence measurement test.

Description

technical field [0001] The invention relates to the technical field of detection of saline soil subsidence, in particular to a test device for measuring saline soil subsidence. Background technique [0002] At present, saline soil is a special regional soil, which is distributed in all countries in the world. my country is also one of the countries with a wide distribution of saline soil, mainly distributed in low-level basins and plains in the arid regions of Northwest China, North China Plain and some lake basins and depressions in the Qinghai-Tibet Plateau. In addition, there are also considerable areas of saline soil distribution in coastal areas . There are great differences in engineering characteristics of saline soil in different regions, and there are also great differences in the same region. Among the three major hazards caused by saline soil to highway engineering, dissolution deformation and salt swelling also play an important role. When construction is carri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 潘兴良石建军唐瑞兆栗勇刘建国王涛白斌张龙哈君曹璐李慎刚李金永
Owner THE THIRD ENG CO LTD OF CHINA RAILWAY SEVENTH GRP
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