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Testing device capable of testing multiangle permeability coefficients of bedded gravel soil mass

A technology of permeability coefficient and test device, which is applied in the direction of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., and can solve the problem of small sample size, small seepage pressure, and affecting soil permeability testing and research, etc. problems, to achieve the effect of improving accuracy and scientificity, and avoiding differences in permeability performance

Active Publication Date: 2018-10-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the instruments commonly used to measure the permeability coefficient of soil include triaxial permeameter, TST-70 permeameter, TST-55 permeameter, etc., all of which generally have small sample size, low osmotic pressure provided, and inability to measure multi-angle soil. Bulk permeability coefficient and other defects
Many scholars have improved conventional permeameters or developed new permeameters for specific problems, but it is still impossible to measure the multi-angle permeability coefficient of layered gravel soil in the same instrument, which affects the permeability of soil. testing and research

Method used

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  • Testing device capable of testing multiangle permeability coefficients of bedded gravel soil mass
  • Testing device capable of testing multiangle permeability coefficients of bedded gravel soil mass
  • Testing device capable of testing multiangle permeability coefficients of bedded gravel soil mass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: as Figure 1-Figure 5 As shown, a multi-angle permeability coefficient test device for measurable layered gravel soil, including a support system, an upstream water supply device, an infiltration device, a downstream liquid collection device and a data acquisition system; the support system is used to control the pilot test of the infiltration device The included angle between the sample chamber 31 and the horizontal direction; the upstream water supply device connected with the osmotic device is used to saturate the sample and provide the permeated liquid required in the osmotic test; the downstream liquid collection device connected with the osmotic device is used to collect 31 Infiltrated liquid; the data acquisition system is used to transmit the collected data to the computer for the calculation of the permeability coefficient.

[0029] Further, the support system can be set to include a base 11, a vertical bar 12, a fastener 13, a cross bar 14, a sle...

Embodiment 2

[0036] Embodiment 2 is basically the same as Embodiment 1, the difference is that: the fixed lock ring 32 has a circular structure, and its inner diameter is 1.4 times the inner diameter of the support rod.

[0037] Test process of the present invention is:

[0038] Adopt the present invention to carry out the test of multi-angle permeability coefficient test device, at first need to prepare the soil sample for test according to certain requirements, then fill the soil sample in the sample room with the filling of the soil or the deposition of the soil layer in the simulated field 31 in. The sample preparation is determined according to the purpose of the test, and the distance between the layers and the type of soil material are selected. The sample soil material is laid in layers in the infiltration device and the sample is compacted layer by layer. The planes formed by the sides are parallel, that is, perpendicular to the long side of the sample chamber 31, so that when th...

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Abstract

The invention discloses a testing device capable of testing multiangle permeability coefficients of a bedded gravel soil mass. The testing device comprises a supporting system, an upstream water supply device, a permeability apparatus, a downstream liquid collecting device and a data acquisition system, wherein the supporting system is used for controlling an included angle between a sample chamber in the permeability apparatus and a horizontal direction; the upstream water supply device connected with the permeability apparatus is used for a saturated sample and is also used for providing permeable liquid required by a permeability test; the downstream liquid collecting device connected with the permeability apparatus is used for collecting liquid permeated from the sample chamber; and the data acquisition system is used for transmitting acquired data to a computer for calculating a permeability coefficient. According to the testing device disclosed by the invention, the same sample can be repeatedly used for conducting the permeability test for multiple time to obtain permeability coefficients of the sample at different angles, so that difference between different samples in permeability is avoided, and the multiangle permeability coefficients of the soil mass are obtained more efficiently and accurately.

Description

technical field [0001] The invention relates to a multi-angle permeability coefficient test device for measurable layered gravel soil, which belongs to the technical field of soil engineering. Background technique [0002] The permeability of soil, together with the strength and deformation characteristics, are several basic subjects in soil mechanics. The strength, deformation and seepage are mutually influencing and interrelated. The soil permeability coefficient is a quantitative index reflecting the water permeability of the soil. It is an extremely important index in engineering to evaluate the water permeability, anti-seepage deformation ability, and anti-penetration damage ability of the soil. Many engineering problems in the field of civil engineering are closely related to the seepage of water in the soil. For example, the soil structure has layered characteristics caused by the compaction of the roadbed, and the uneven settlement of the layered soil is related to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 桂跃方超刘锐吴承坤杨松徐其福
Owner KUNMING UNIV OF SCI & TECH
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