A fully hydraulic non-servo rock creep test device and method

A creep test, full hydraulic technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of complex control technology, inability to calculate the stress of rock samples, and difficulty in meeting the requirements of test accuracy.

CN109883848BActive Publication Date: 2021-04-02NORTHEASTERN UNIV LIAONING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-02

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Abstract

The invention belongs to the field of rock creep testing, and specifically relates to a fully hydraulic non-servo rock creep testing device and method. The technical solution of the present invention is as follows: a fully hydraulic non-servo rock creep test device, including a disc seal single-acting loading cylinder and a hydraulic pressure stabilizing system. The fully hydraulic non-servo rock creep test device and method provided by the present invention can achieve a simple structure of the testing machine, high load control accuracy, and in a test environment with a large temperature difference between morning and evening, the load control accuracy can also meet the requirements, and the procurement cost is low. Low maintenance cost and no environmental pollution.
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Description

technical field

[0001] The invention belongs to the field of rock creep tests, and in particular relates to a fully hydraulic non-servo rock creep test device and method. Background technique

[0002] Rock creep refers to the phenomenon that the deformation of rock continues to increase with the passage of time under the condition of constant rock stress. For rock engineering with a long service life, rock creep characteristics have an important impact on the stability of rock mass engineering structures. Indoor creep test is one of the main means to obtain and evaluate rock creep characteristics. Rock creep testing machine is the basic equipment for indoor rock creep testing. The basic requirement for creep testing machine is to provide constant load.

[0003] The test of rock creep properties usually takes 15-20 days for a rock sample. For other mechanical properties of the rock, it only takes 15-30 minutes for each rock sample. Therefore, the test of rock creep propert...

Examples

Embodiment Construction

[0095] Such as Figure 5 , 6 As shown, a fully hydraulic non-servo rock creep test device includes a disc-sealed single-acting loading cylinder 37 and a non-servo hydraulic pressure stabilization system, and the disc-sealed single-acting loading cylinder 37 includes a loading plunger 22, Housing 23, disc-shaped rubber seal 24, venting plug 21, pressing plate 28 and base 25, the loading plunger 22 is placed in the housing 23, the housing 23 is installed on the base 25, the The disc-shaped rubber seal 24 is provided between the housing 23 and the base 25, the center of the disc-shaped rubber seal 24 is provided with a round hole, and the center of the loading plunger 22 is provided with a through hole. The center of the pressing plate 28 is provided with an air release hole, and the pressing plate 28 presses and installs the disc-shaped rubber seal 24 on the loading plunger 22, and the venting plug 21 is used to plug the passage hole; the base 25 is provided with a liquid inle...