Rockfill material triaxial test device

A triaxial test and rockfill material technology, which is applied in the field of rockfill triaxial test equipment, can solve the problems of sample disturbance, insufficient stroke, short stroke, etc., and achieve the effect of reducing energy consumption and reducing noise

Inactive Publication Date: 2019-06-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the dry-wet cycle function, the sample can be dried by passing hot air into the sample, but the hot air will affect the temperature of the sample and cause a large disturbance of the sample
For the long-term loading function, the long-term loading of the sample can be realized by directly using the electro-hydraulic servo actuator, but the stroke of the general electro-hydraulic servo actuator is relatively short, and there will be a problem of insufficient stroke

Method used

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  • Rockfill material triaxial test device
  • Rockfill material triaxial test device
  • Rockfill material triaxial test device

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] like figure 1 As shown, the rockfill material triaxial test device of the present invention includes a loading system, a temperature control system, a humidity control system, and a data acquisition and control system. Among them: 1 displacement sensor; 2 axial pressure sensor; 3 high temperature circulation pipe; 4 low temperature circulation pipe; 5 temperature sensor; 6 heat preservation cover; 7 sample; 8 permeable stone; 9 pressure cover; ;12 high temperature water bath box; 13 temperature controller; 14 water storage barrel; 15 confining pressure actuator; 16 hole pressure actuator; 17 hydraulic pump; 18 axial pressure actuator; 19 pressure cylinder; 20 pressure controller; 21 Humidifying device; 22 Drying device; 23 Relative humidity measuring device; 24 Body variable tube; 25 Relative humidity controller; 26 Computer; Liquid ou...

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Abstract

The present invention discloses a rockfill material triaxial test device. The device comprises a loading system, a temperature control system, a humidity control system, and a data collection and control system. The loading system comprises a counter-force frame, a bearing device formed by a pressure cover in the counter-force frame, and a loading device formed by an ambient pressure actuator, a pore pressure actuator and an axle load combined controller. The humidity control system comprises a humidifying device, a drying device and a relative humidity measurement device. The test device is upgraded on the basis of a traditional triaxial apparatus to mainly improve the loading system and extend an ultrasonic wave humidifying system and a dry and wet circulatory system. The rockfill material triaxial test device can achieve the rockfill material triaxial test with high axle load, high ambient pressure, temperature control, relative temperature control, long-term loading and complete stress path loading.

Description

technical field [0001] The invention relates to a test device, in particular to a triaxial test device for rockfill materials. Background technique [0002] Rockfill dams have the advantages of good terrain adaptability, local materials, low investment, and simple construction, and have gradually become the main dam type for high dam construction in hydropower resource development. Extra-high earth-rockfill dams are mostly located in alpine and high-altitude areas. During the design and construction process, they are faced with the combined effects of high water head, high stress, temperature change, relative humidity change, and complex stress paths. They will encounter long-term deformation during operation. troubled. Therefore, the change law of mechanical properties of rockfill materials under the influence of complex environmental factors has become a research hotspot at home and abroad. [0003] Due to lack of functions or size limitations, the existing equipment can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/24G01N3/02G01N15/08
Inventor 毛航宇刘斯宏沈超敏薛晨阳鲁洋
Owner HOHAI UNIV
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