Rock creep triaxial test system and method capable of continuously acting in water environment

A triaxial test and water environment technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problems of easy damage of constant flow pumps, differences in compressive strength, high requirements for constant flow pumps, etc. problem, to achieve cost reduction and good expansion effect

Active Publication Date: 2020-02-04
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, we believe that in rock engineering, due to the change of water level in the rock body, water content is a dynamic variable related to time and space. Even if the rock mass in the saturated state is in the water environment for a long time, its long-term mechanical properties will change , resulting in a significant difference betw...

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  • Rock creep triaxial test system and method capable of continuously acting in water environment
  • Rock creep triaxial test system and method capable of continuously acting in water environment
  • Rock creep triaxial test system and method capable of continuously acting in water environment

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Embodiment 1

[0031] A triaxial test system for rock creep under continuous water environment, including: pressurized cylinder 1, pillar 2, beam 3, water environment confining pressure system 5, testing machine base 8, dynamic stress and strain acquisition system 14, computer 15, Digital controller 16, servo controller 17, hydraulic source 18, oil delivery pipe 19, described pressurization cylinder 1 is connected with described crossbeam 3, and described crossbeam 3 is supported on the described testing machine base 8 by pillar 2, and described base The water environment confining pressure system 5 is arranged between 8 and the beam 3, and the dynamic stress and strain collection system 14 is connected with the water environment confining pressure system 5, and the dynamic stress and strain collection system 14 is sequentially connected with the computer 15, A digital controller 16, a servo controller 17, a hydraulic source 18, and an oil delivery pipe 19 are connected.

[0032]Further, the...

Embodiment 2

[0047] A rock creep triaxial test system under continuous water environment action, the system includes axial loading system, collection system, water environment confining pressure system and automatic stirring system. It is suitable for simulating and reproducing the whole process analysis of rock creep damage and cracking in flowing / static water and other water environments containing chemical components.

[0048] (1) Axial loading system

[0049] The axial loading system consists of a pressurized cylinder 1, a pillar 2, a beam 3, a pressure head 4, an adjustment pad 7, a testing machine base 8, a computer 15, a digital controller 16, a servo controller 17, a hydraulic source 18, and an oil pipeline 19 .

[0050] (2) Acquisition system

[0051] The acquisition system is composed of force sensor 9, lvdt displacement sensor 10, lvdt frame 11, circumferential strain gauge 12, sensor data line 13, dynamic stress and strain acquisition system 14, pressure gauge 25, and PH te...

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Abstract

The invention discloses a rock creep triaxial test system and method capable of continuously acting in a water environment, and belongs to the technical field of rock mechanics tests. According to thetechnical scheme, a pressurizing cylinder is connected with a cross beam, the cross beam is supported on a testing machine base through a supporting column, a water environment confining pressure system is arranged between the base and the cross beam, a dynamic stress-strain collecting system is connected with the water environment confining pressure system, and the dynamic stress-strain collecting system is sequentially connected with a computer, a digital controller, a servo controller, a hydraulic source and an oil conveying pipe. The rock creep triaxial test system and method have the beneficial effects that the hydration reaction of an expanding agent is used for replacing a constant-flow pump to provide confining pressure for a triaxial test, the cost is reduced, and the rock creeptriaxial test system and method are continuous and stable; the long-term mechanical property of the rock can be tested under the continuous action of chemical solutions with different components; thelong-term mechanical properties of the rock in static and flowing water environments can be tested, the pH value change of the water environment caused by corrosion of water to the rock can be monitored in real time, and the hydrochemical reaction characteristics of the rock are obtained; and moreover, the mixed expanding agent is good in expanding effect.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics tests, and in particular relates to a triaxial test method and device for rocks under the continuous action of different water environments, which are suitable for reproducing the long-term stability of rocks and the full range of creep damage and destruction under different solution environmental conditions in dynamic / static water. process. Background technique [0002] At present, in the triaxial tests on the influence of water on the mechanical properties of rock, almost all of them study the weakening effect of strength and elastic modulus under different water content or saturated state from the perspective of water content or water content state. However, the moisture content involved in these experiments is mostly a static quantity. However, we believe that in rock engineering, due to the change of water level in the rock body, water content is a dynamic variable related to time and...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/12
CPCG01N3/02G01N3/12
Inventor 唐世斌李佳明唐春安孙康王嘉戌
Owner DALIAN UNIV OF TECH
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