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Loading path method for measuring water rock coupling weakening effect of test piece of jointed rock mass

A fractured rock mass, water-rock coupling technology, applied in the preparation of test samples, soil material testing, and the use of stable tension/pressure to test the strength of materials, etc. Test effect, wide applicability, effect of guaranteeing reliability and evidence

Inactive Publication Date: 2019-09-10
SICHUAN UNIV
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Problems solved by technology

At present, the research method for the weakening effect of water-rock coupling in rocks is not yet clear, and the test process of the existing test methods is complicated and time-consuming

Method used

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  • Loading path method for measuring water rock coupling weakening effect of test piece of jointed rock mass
  • Loading path method for measuring water rock coupling weakening effect of test piece of jointed rock mass
  • Loading path method for measuring water rock coupling weakening effect of test piece of jointed rock mass

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Embodiment Construction

[0040] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0041] Such as Figure 1 to Figure 6 As shown, a loading path method for determining the weakening effect of water-rock coupling in fractured rock mass specimens, the test method steps are as follows:

[0042] S1: (1), test sample preparation:

[0043]According to the laboratory specifications, the rock samples taken on site were first prepared into 5 samples with a size of φ50mm×H100mm; the test considers the influence of seepage, so it is necessary to form a fracture surface or crack in the test piece that can pass through the seepage water, so drilling is used method, drill a hole with a diameter of 5mm and a depth of 80-90mm at both ends of the test piece, and the distance between the centerlines of the two holes is 30mm. The schematic...

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Abstract

The invention discloses a loading path method for measuring a water rock coupling weakening effect of a test piece of a jointed rock mass, and relates to the field of the rock mechanical property test. The test method comprises the following steps of: (1) preparing a test sample; (2) dividing the test process: a, simulating the forming process test of the jointed rock mass; b, simulating the degrading and unloading tests of the river; c, performing the mechanical property test of natural state containing the jointed rock mass; d, performing the saturation test of the test piece; and e, performing a weakening test of the jointed rock mass under different water pressures and confining pressures; and (3), analyzing the test data: acquiring the natural state of each jointed rock mass and a scatter diagram of the relationship between the axial stress sigma 1 and the confining pressure sigma 3, and simultaneously acquiring the intensity parameter c value and f value of the jointed rock massthe natural state and each grade of the water pressure. The invention provides a new, simple and convenient loading path method, is used for studying the weakening effect of the basement of the dam body under the water rock coupling effect, and provides the technical support for solving the long-term stability problem of the dam body.

Description

technical field [0001] The invention relates to the field of geographic information processing, in particular to a loading path method for measuring the water-rock coupling weakening effect of a fractured rock mass test piece. Background technique [0002] Water is one of the basic characteristics of rock-soil media. In addition to affecting the physical and chemical properties and constitutive relations of the medium, the dynamic and hydrostatic pressure generated by its migration will change the stress state in the medium; on the other hand, the stress state of the medium is related to The geometric characteristics of the medium and the change of the stress state will cause the change of the osmotic tensor of the medium, thereby affecting the flow of water. It can be seen that there is a close interaction between stress and seepage: seepage affects the stress state of the medium, which in turn It also affects the seepage characteristics of the medium, that is, the water-ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/12G01N33/24G01N1/28
CPCG01N1/286G01N3/08G01N3/12G01N33/24G01N2203/0019G01N2203/0048G01N2203/0075G01N2203/0242G01N2203/0256
Inventor 杨宝全陈媛徐慧宁陈建叶董建华张林刘建锋罗敏刘子安张芮瑜
Owner SICHUAN UNIV
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