WO2020074014A1 - Procédé de test de cisaillement direct dynamique et cyclique de plan structurel de roche - Google Patents

Procédé de test de cisaillement direct dynamique et cyclique de plan structurel de roche Download PDF

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Publication number
WO2020074014A1
WO2020074014A1 PCT/CN2019/113865 CN2019113865W WO2020074014A1 WO 2020074014 A1 WO2020074014 A1 WO 2020074014A1 CN 2019113865 W CN2019113865 W CN 2019113865W WO 2020074014 A1 WO2020074014 A1 WO 2020074014A1
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Prior art keywords
shear
box
rock mass
structural plane
test
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PCT/CN2019/113865
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English (en)
Chinese (zh)
Inventor
祁生文
郑博文
郭松峰
黄晓林
邹宇
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中国科学院地质与地球物理研究所
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Priority to AU2019359149A priority Critical patent/AU2019359149B2/en
Publication of WO2020074014A1 publication Critical patent/WO2020074014A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0005—Repeated or cyclic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0012—Constant speed test
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0025—Shearing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

Definitions

  • the invention relates to the field of rock mass mechanics experiments, in particular to a dynamic circular direct shear test method for rock mass structural planes.
  • the indoor direct shear test of rock mass is convenient to control the loading path, and it is easy to obtain the normal parameters and shear parameters. It is the preferred test method for understanding the shear behavior of rock mass structural plane.
  • the dynamic cyclic direct shear test is carried out on the rock mass structural plane by the dynamic direct shear test equipment of the rock mass structural plane to test the dynamic cyclic shear characteristics of the rock mass structural plane under the action of seismic load. Due to the lack of a complete set of test methods for testing the dynamic shear characteristics of rock mass structural planes, the previous understanding of the dynamic cyclic shear characteristics of rock mass structural planes is inadequate and urgently needs to be deepened.
  • the present invention provides a dynamic cyclic direct shear test method for rock mass structural planes, which can be applied to the dynamic cyclic direct shear test for rock mass structural planes to achieve different research purposes.
  • a dynamic cyclic direct shear test method for a rock mass structural plane includes two parts: a dynamic direct shear test method for a rock mass structural plane and a cyclic direct shear test method for a rock mass structural plane, the dynamic direct shear test method for the rock mass structural plane includes Rock mass structural plane uniform velocity unidirectional direct shear test method and rock mass structural plane variable speed unidirectional direct shear test method; the rock mass structural plane cyclic direct shear test method includes rock mass structural plane unidirectional cyclic direct shear test method, rock mass Structural plane bidirectional cyclic direct shear test method and rock mass structural plane loading and unloading direct shear test method.
  • steps of the uniform velocity unidirectional direct shear test method of the rock mass structural plane are:
  • the normal load is applied to the rock mass structure surface by controlling the normal oil cylinder and the upper shear box;
  • the shear load pushes the lower shear box at a constant speed by controlling the tangential cylinder and then acts on the rock structure surface until the lower shear box moves to the preset position to stop the test.
  • the moving speed of the shear box depends on the dynamic test requirements; the test data is recorded by the force sensor and displacement sensor during the test.
  • a normal load is applied to the rock mass structural surface by controlling the normal oil cylinder and the upper shear box;
  • the shear load pushes out the lower shear box at a constant shear direction and changing rate by controlling the tangential cylinder and then acts on the rock structure surface until the lower shear box moves to the preset
  • the test is stopped at the position, and the moving rate of the lower shear box is determined according to the dynamic test requirements; during the test, the force sensor and the displacement sensor record test data.
  • a normal load is applied to the rock mass structural surface by controlling the normal oil cylinder and the upper shear box;
  • the shear load pushes the lower shear box with a constant shear direction and a certain rate by controlling the tangential cylinder and then acts on the rock structure surface, when the lower shear box moves to At the preset position, the lower shear box is pulled back by controlling the tangential cylinder to be pushed out, and when the lower shear box moves to the displacement zero point with a constant shear direction and a certain rate, the above is repeated
  • the movement process of pushing out and pulling back until the number of movement cycles of the lower shear box reaches a preset value; the test is stopped; the movement rate of the lower shear box is determined according to the dynamic test requirements; the force sensor and The displacement sensor records test data.
  • a normal load is applied to the rock mass structural surface by controlling the normal oil cylinder and the upper shear box;
  • the shear load pushes the lower shear box with a constant shear direction and a certain rate by controlling the tangential cylinder and then acts on the rock structure surface, when the lower shear box moves to At the preset position, by controlling the tangential cylinder to pull back the lower shear box from being pushed out, when the lower shear box moves to the preset position with a constant shear direction and a certain rate, pass Control the tangential cylinder to pull out the lower shearing box by pulling back, when the lower shearing box moves to the displacement zero point with a constant shearing direction and a certain speed, repeat the movements of pushing out and pulling back The process stops until the number of movement cycles of the lower shear box reaches a preset value; the movement rate of the lower shear box is determined according to the dynamic test requirements; the test is recorded by the force sensor and the displacement sensor during the test data.
  • steps of the loading and unloading direct shear test method of the rock mass structural plane are:
  • a normal load is applied to the rock mass structural surface by controlling the normal oil cylinder and the upper shear box;
  • the shear load pushes the lower shear box at a constant shear direction and a certain rate by controlling the tangential cylinder and then acts on the rock structure surface.
  • the force sensor and The displacement sensor records the test data.
  • the tangential cylinder is controlled to be pulled back from the pushing out to pull down the shear box.
  • the shear load decreases
  • the shear load drops to 1% of the peak value
  • the tangential cylinder is controlled to pull back from the lower shear box, and the lower shear box moves at a constant shear direction and a certain rate.
  • test is stopped when the lower shear box moves to a preset position.
  • the invention can be applied to a rock mass structural plane dynamic direct shear test system to test the dynamic cyclic shear characteristics of the structural plane to achieve different research purposes.
  • FIG. 1 is a schematic diagram of uniform or variable speed one-way direct shear test of a rock mass structural surface in an embodiment of the invention
  • FIG. 2 is a schematic diagram of the relationship between the shear displacement and the shear time of the rock mass structure plane uniform speed unidirectional direct shear test in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of the relationship between the shear displacement and the shear time of a variable speed one-way direct shear test of a rock mass structural plane in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a unidirectional cyclic direct shear test of a rock mass structural plane in an embodiment of the present invention
  • FIG. 5 is a schematic diagram of the relationship between the shear displacement and the shear time in a one-way cyclic direct shear test of a rock mass structural plane in an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a two-way cyclic direct shear test of a rock mass structural plane in an embodiment of the present invention
  • FIG. 7 is a schematic diagram of the relationship between shear displacement and shear time in a bidirectional cyclic direct shear test of a rock mass structural plane in an embodiment of the present invention
  • FIG. 8 is a schematic diagram of the relationship between the shear load and the shear displacement of the rock structure surface in the direct shear test in an embodiment of the present invention
  • the test device used includes a lower shear box with a tangential cylinder and a displacement sensor, and an upper shear box with a normal cylinder and a displacement sensor, and between the normal cylinder and the upper shear box.
  • a force sensor is arranged between the cylinder and the lower shear box.
  • the steps of the rock mass structure plane uniform speed unidirectional direct shear test method are: first, the normal load is applied to the rock mass structure plane 3 by controlling the normal cylinder 1 and the upper shear box 2; then , The shear load pushes the lower shear box 5 at a constant speed by controlling the tangential cylinder 4 and then acts on the rock mass structural plane 3, which is the upper shear box 2 and the lower shear box 5
  • the contact surface between the rock blocks, the length of the rock block in the upper shear box 2 in the shear direction is less than the rock block in the lower shear 5, the moving speed of the lower shear box 5 is determined according to the dynamic test requirements ,
  • the speed range can be selected from 0.001 to 1000mm / s; the test data is recorded by the force sensor 6 and the displacement sensor 7 during the test; finally, the test is stopped when the lower shear box 5 moves to the preset position, between the preset position and the displacement zero point The distance is between 0 and the difference between the lengths of the rock blocks in
  • the steps of the rock mass structural plane variable speed one-way direct shear test method are as follows: First, the normal load is applied to the rock mass structural plane 3 by controlling the normal cylinder 1 and the upper shear box 2; then , The shear load pushes the lower shear box 5 at a constant shearing direction and changing rate by controlling the tangential cylinder 4 and then acts on the rock mass structural plane 3, and the moving speed of the lower shear box 5 is based on the dynamic test requirements During the test, the test data is recorded by the force sensor 6 and the displacement sensor 7; finally, the test is stopped when the lower shear box 5 moves to the preset position, and the distance between the preset position and the displacement zero point is between 0 and the lower and upper The difference between the lengths of the rock blocks in the shear box and the rock blocks in the upper shear box never leave the surface of the rock blocks in the lower shear box.
  • the steps of the unidirectional cyclic direct shear test method for rock mass structural planes are as follows: First, the normal load is applied to the rock mass structural plane 3 by controlling the normal cylinder 1 and the upper shear box 2; then , The shear load pushes the lower shear box 5 at a constant shear direction and a certain rate by controlling the tangential cylinder 4 and then acts on the rock structure surface 3, when the lower shear box 5 moves to the preset position, the Control the tangential cylinder 4 to pull back the lower shear box 5 by pushing it out, the distance between the preset position and the displacement zero point is between 0 and the difference between the length of the rock block in the lower and upper shear boxes and the upper shear
  • the rock block in the box never leaves the surface of the rock block in the lower shear box; when the lower shear box 5 moves to the displacement zero point with a constant shear direction and a certain rate, the above-mentioned movement process of pushing out and pulling back is repeated, The movement rate of the
  • the steps of the two-way cyclic direct shear test method for the rock mass structural plane are: first, the normal load is applied to the rock mass structural plane 3 by controlling the normal cylinder 1 and the upper shear box 2; then, The shearing load pushes out the lower shearing box 5 at a constant shearing direction and a certain rate by controlling the tangential cylinder 4 and then acts on the rock structure surface 3.
  • the moving speed of the lower shear box 5 is based on a dynamic test Depends on requirements; recorded by force sensor 6 and displacement sensor 7 during test Test data; Finally, the test is stopped when the number of movement cycles of the lower shear box 5 reaches a preset value.
  • the steps of the rock body structure plane loading and unloading direct shear test method are: first, the normal load is applied to the rock body structure plane 3 by controlling the normal cylinder 1 and the upper shear box 2; then, The shear load pushes the lower shear box 5 at a constant shear direction and a certain rate by controlling the tangential cylinder 4 and then acts on the rock mass structural plane 3.
  • the force sensor 6 and the displacement sensor 7 record the test data When the shear load reaches the peak value, the tangential cylinder 4 is controlled to be pulled back to pull down the shear box 5.
  • the shear load decreases and when the shear load drops When it reaches 1% of the peak value, the tangential cylinder 4 is controlled to pull back and push out the lower shear box 5.
  • the lower shear box 5 moves at a constant shear direction and a certain rate.
  • the shear load reaches a new peak value

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
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Abstract

La présente invention concerne un procédé de test de cisaillement direct dynamique et cyclique de plan structurel de roche. Ledit procédé comprend deux parties, un procédé de test de cisaillement direct dynamique de plan structurel de roche et un procédé de test de cisaillement direct cyclique de plan structurel de roche. Ledit procédé de test de cisaillement direct dynamique de plan structurel de roche comprend un procédé de test de cisaillement direct unidirectionnel à vitesse constante de plan structurel de roche et un procédé de test de cisaillement direct unidirectionnel à vitesse variable de plan structurel de roche. Ledit procédé de test de cisaillement direct cyclique de plan structurel de roche comprend un procédé de test de cisaillement direct cyclique unidirectionnel de plan structurel de roche, un procédé de test de cisaillement direct cyclique bidirectionnel de plan structurel de roche et un procédé de test de cisaillement direct de chargement/déchargement de plan structurel de roche. Le procédé de test de cisaillement direct dynamique et cyclique de plan structurel de roche peut être utilisé dans un système de test de cisaillement direct dynamique de plan structurel de roche pour tester les caractéristiques de cisaillement direct dynamique et cyclique d'un plan structurel de roche à des fins de recherche différentes.
PCT/CN2019/113865 2018-10-08 2019-10-29 Procédé de test de cisaillement direct dynamique et cyclique de plan structurel de roche WO2020074014A1 (fr)

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CN111896202A (zh) * 2020-06-29 2020-11-06 河海大学 一种用于地震动力边坡模型试验相似材料配比的确定方法
CN113466126A (zh) * 2021-05-25 2021-10-01 浙江大学 一种可进行饱和、固结并可考虑温度效应的多功能界面剪切装置
CN113624591A (zh) * 2021-09-06 2021-11-09 贵州省水利水电勘测设计研究院有限公司 直剪试验仪
CN114755117A (zh) * 2022-06-14 2022-07-15 西南交通大学 基于振动台的土石混合体多向动态剪切测试系统及方法

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CN112858043B (zh) * 2021-02-24 2022-05-20 同济大学 一种可实现双向高频振动的土-结构接触面剪切试验装置
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CN117647452B (zh) * 2024-01-29 2024-03-26 中国科学院地质与地球物理研究所 一种研究活断层错断隧道结构的物理模拟试验系统

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CN111896202A (zh) * 2020-06-29 2020-11-06 河海大学 一种用于地震动力边坡模型试验相似材料配比的确定方法
CN113466126A (zh) * 2021-05-25 2021-10-01 浙江大学 一种可进行饱和、固结并可考虑温度效应的多功能界面剪切装置
CN113466126B (zh) * 2021-05-25 2022-05-20 浙江大学 一种可进行饱和、固结并可考虑温度效应的多功能界面剪切装置
CN113624591A (zh) * 2021-09-06 2021-11-09 贵州省水利水电勘测设计研究院有限公司 直剪试验仪
CN114755117A (zh) * 2022-06-14 2022-07-15 西南交通大学 基于振动台的土石混合体多向动态剪切测试系统及方法

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AU2019359149A1 (en) 2020-10-01

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