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Triaxial sample preparation device for hammer-type rockfill materials and use method

A technology for triaxial samples and rockfill materials, which is applied in the field of triaxial test sample preparation devices for rockfill materials, can solve problems such as difficulty in accurate measurement, large density dispersion, poor sample uniformity, etc., and achieve positioning accuracy, test High sample uniformity, good effect of sample uniformity

Pending Publication Date: 2017-05-10
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the soil and rock are non-viscous bulk materials, the samples are generally made on a triaxial testing machine. After the production is completed, a triaxial test is carried out. This method of sample making reduces the utilization rate of the triaxial testing machine and prolongs a set The time required for the test, and when layered samples are used, the compaction height of each layer of samples is not easy to measure accurately, resulting in poor sample uniformity and large density dispersion, so that the accuracy of the triaxial test results cannot be obtained. Guaranteed, it cannot truly reflect the real mechanical parameters of soil and rock

Method used

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  • Triaxial sample preparation device for hammer-type rockfill materials and use method
  • Triaxial sample preparation device for hammer-type rockfill materials and use method
  • Triaxial sample preparation device for hammer-type rockfill materials and use method

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

[0027] figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 Shown is a hammer-type rockfill material triaxial sample preparation device, including 1-test ruler, 2-measuring rod, 3-rubber film, 4-O-ring, 5-collar, 6-exhaust duct, 7-split mold, 8-permeable stone, 9-base, 10-permeable plate, 11-rock pile, 12-compacting backing plate, 13-compacting hammer, 14-compacting hammer guide rod, 15-U-shaped Buckle, 16-guide rod locator, 17-vacuum pump, 18-metal ball.

[0028] In the present invention, the sample preparation mechanism includes two split molds 7, the convex interface of the split mold 7 matches the size of the concave interface, and the split mold 7 is first formed by the convex and concave interfaces. sample preparation cylinder, and then use the collar 5 to seamlessly connect the two split molds 7; The diameter of the lower en...

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Abstract

The invention discloses a triaxial sample preparation device for hammer-type rockfill materials and a use method. The triaxial sample preparation device comprises a sample preparation mechanism and a compaction mechanism, the sample preparation mechanism comprises a split mold, a sleeve ring, a base, a water permeation plate, a water permeation stone, a rubber sleeve, an O-shaped ring and a vacuum pump, the compaction mechanism comprises a compaction hammer, a compaction base plate, a guide rod, a measuring rod, a guide rod positioning instrument and a test ruler. According to the triaxial sample preparation device, bulk rockfill material samples are formed by the rubber sleeve adsorbing on a sample preparation barrel, the guide rod, the measuring rod and the test ruler are mutually matched, samples of the rockfill materials are prepared in an uniformly layered manner, the two mechanism are efficiently matched, samples of continuous gradation and single gradation rockfill materials are prepared, so that sample preparation is independent of a triaxial compression apparatus, and prepared samples have good uniformity.

Description

technical field [0001] The invention relates to the field of civil and water conservancy engineering tests, in particular to a rockfill material triaxial test sample preparation device and a use method thereof. Background technique [0002] The proportion of clean energy in total energy is increasing year by year, and hydropower energy is an important part of clean energy. Hydroelectric power generation is mainly achieved through water storage in dams. Soil and rockfill materials are important construction materials for dam foundations. During engineering construction, tamping and rolling methods are used to make soil and stone materials reach their engineering design density, and the shear strength of dense soil and stone materials It is an important parameter for the stability of the dam foundation, and the shear strength parameter is mainly obtained through indoor triaxial tests on the scaled-down soil and rock. The indoor triaxial sample is made by layered compaction me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 金峰王卫周虎
Owner TSINGHUA UNIV
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