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Numerical discrimination method of rock mass weathering and unloading

A discriminating method and rock mass technology, applied in the direction of electrical digital data processing, design optimization/simulation, special data processing applications, etc., can solve the problem of poor practicability, difficulty in compressive strength test, weathering zone, unloading zone interface relationship research Less problems, such as easy operation, avoiding artificial differences and randomness, and less demanding working environment conditions

Active Publication Date: 2018-10-02
YELLOW RIVER ENG CONSULTING
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Problems solved by technology

[0012] Due to the qualitative judgment of weathering and unloading of rock mass and the division of weathering zone and unloading zone, due to differences in the experience of surveyors and the mastery of evaluation standards, different zoning levels will be obtained, and there will inevitably be evaluations. In addition, in the current quantitative division method of rock mass weathering zone and unloading zone, there are few studies on the interface relationship between weathering zone and unloading zone. The weathering coefficient is mainly calculated based on the saturated compressive strength, but the compressive strength test is difficult to carry out in the field, so the practicability of the quantitative standard of the weathering coefficient is poor

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  • Numerical discrimination method of rock mass weathering and unloading
  • Numerical discrimination method of rock mass weathering and unloading
  • Numerical discrimination method of rock mass weathering and unloading

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Embodiment Construction

[0047] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0048] Rock mass weathering of the present invention, the numerical discrimination method of unloading comprise the following steps:

[0049] 1. Rock Mass Acoustic Test

[0050] In the exploration tunnel excavated by geological survey, the acoustic wave instrument is used to test the acoustic wave on the rock mass of the tunnel wall; the testing method adopts the surface acoustic wave detection flat measurement method:

[0051] The sound wave test line is arranged along the waistline 1 of the tunnel wall, and on the waistline 1 of the tunnel wall, a sound wave test point 3 is arranged every two meters, and the test points 3 are numbered, and the position of each number is recorded, such as figure 1 shown;

[0052] The transducer is used to excite, and the transmitting and receiving transducers are aligned with the test point in turn, that is, the distance betw...

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Abstract

The invention discloses a numerical discrimination method of rock mass weathering and unloading. The method comprises: respectively arranging acoustic wave test points and rebounding test areas from acave mouth to a cave bottom along a waist line on a detection cave wall, using an acoustic wave meter to test longitudinal-wave propagation velocity of rock masses at the acoustic wave test points, and using a rebounding hammer to test rebounding values of rocks in the rebounding test areas, wherein whether the rock masses are weathered or unloaded, the longitudinal-wave velocity thereof has grade difference, and rebounding values of weathered rock masses have grade difference, but rebounding values of unloaded rock masses do not have grade difference; and using the two types of parameters tocarry out combination to judge whether the rock masses are weathered or unloaded and judge degree levels of weathering and unloading. The method has the advantages that operations are simple and easy, requirements for field conditions are not high, rock mass data can be obtained relatively quickly, and engineering geology problems can be quantitatively evaluated.

Description

technical field [0001] The invention relates to the weathering and unloading of rock mass foundations and rock slopes, in particular to a numerical discrimination method for rock mass weathering and unloading. Background technique [0002] Water conservancy and hydropower projects often involve rock foundations and rock slopes. Under natural conditions, weathering and unloading will cause rock mass to break, which has a significant impact on construction projects. [0003] Rock weathering is the process of continuous physical and chemical changes of rocks under the action of various weathering stresses such as solar heat, atmosphere, moisture and organisms. This geological process that causes rocks to break up and even break down is called weathering. Weathering can change the properties of rocks, and the color, structure, mineral composition and physical and mechanical properties of rocks will change after weathering. [0004] Generally speaking, the closer to the surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 李雷王贵军张一张瑞洵陈艳国高旭辉牛贝贝陈利李文雅
Owner YELLOW RIVER ENG CONSULTING
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