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Rock creep test device and test method under action of high-temperature environment

A technology of creep test and high temperature environment, applied in the direction of measuring device, testing material strength by applying repetitive force/pulsation force, testing material strength by applying stable tension/compression, etc., can solve the problem of precise control of loading and monitoring of rock creep Displacement changes and other issues, to achieve accurate stress changes and monitor axial displacement changes, accurate control, and avoid temperature errors

Pending Publication Date: 2021-04-23
DALIAN MARITIME UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention proposes a rock creep test device under the action of high temperature environment, which solves the problem that the existing device cannot precisely control the loading and monitor the change of rock creep displacement under the action of high temperature environment

Method used

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  • Rock creep test device and test method under action of high-temperature environment
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  • Rock creep test device and test method under action of high-temperature environment

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Embodiment

[0032]Embodiment: The specific process of the rock creep characteristic test under the action of high temperature environment is as follows: first, the rock test piece 8 is made and fixed on the foundation base 7, and at the same time, the temperature sensor 200 and the strain sensor 100 are placed around the test piece, in order to make the information The accuracy sensors are to be arranged in layers, and then the pressure constant temperature chamber 5 is installed and kept closed. like figure 1 and 2 As shown, the heating system 2, the axial pressure system 3, the servo pump loading control system 4, the data acquisition and processing system 6 and the pressure constant temperature chamber 5 are installed and connected to a proper state. The laser ranging system 1 is installed next to the axial pressure system 3, and connected to the data acquisition and processing system 6 through a data line to monitor displacement changes in real time. Use the heating system 2 to heat...

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Abstract

The invention discloses a rock creep test device and method under the action of a high-temperature environment. The rock creep test device comprises a laser ranging system, a heating system, an axial pressure system, a servo pump loading control system, a pressure constant-temperature chamber, a data acquisition and processing system, a foundation base, a rock test piece, a strain sensor and a temperature sensor, wherein the pressure constant-temperature chamber is fixed on the foundation base, a loading shaft is arranged on the pressure constant-temperature chamber, and a heating system, a strain sensor and a temperature sensor are arranged in the pressure constant-temperature chamber; the axial pressure system is arranged outside the pressure constant-temperature chamber; the servo pump loading control system is connected with the axial pressure system and applies a load to the rock test piece arranged in the pressure constant-temperature chamber through the loading shaft; the laser ranging system is arranged on the loading shaft; and the strain sensor, the temperature sensor and the laser ranging system are connected with the data acquisition and processing system. The device can accurately control the loading and monitor the creep displacement change of the rock under the action of a high-temperature environment.

Description

technical field [0001] The invention relates to the technical field of rock mechanics tests, and is mainly applicable to the research of rock compression deformation under high temperature and constant or cyclic loads, especially to reveal the creep characteristics of rocks under different temperature effects and different load coupling conditions. A rock creep test device and test method under the action of high temperature environment. Background technique [0002] Creep is a phenomenon in which the strain of a solid material increases with time while keeping the stress constant. In rock mass engineering, such as engineering disasters such as underground tunnel collapse, foundation instability, nuclear waste storage warehouse rupture, and rockburst, there are a large number of damages caused by long-term creep deformation of rocks, and rocks will bear loads in these projects Influenced by factors coupled with temperature. Therefore, the test of rock creep characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/18G01N3/36G01S17/08
CPCG01N3/12G01N3/18G01N3/36G01S17/08G01N2203/0075G01N2203/0071G01N2203/0222G01N2203/0682
Inventor 姜谙男蒋浩鹏刘铁新
Owner DALIAN MARITIME UNIVERSITY
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