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A Method of Calculating the Elastic Modulus of Buffer Layer from the Density of Buffer Layer

A technology of elastic modulus and compactness, which is applied in the fields of rockfall prevention and control projects and collapses, can solve the problems of unsuitable large rock buffer layer, poor applicability of disaster prevention and mitigation, etc., to achieve accuracy improvement, improve accuracy and reliability, The effect of accurate calculation results

Active Publication Date: 2020-02-14
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the impact of the specific compactness of tight sandstone reservoir rocks on the elastic modulus is not considered, its calculation method is not suitable for the actual calculation of large-scale buffer layers of coarse rocks in the field, and is suitable for disaster prevention and mitigation of landslides and rockfalls. Poor sex

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  • A Method of Calculating the Elastic Modulus of Buffer Layer from the Density of Buffer Layer
  • A Method of Calculating the Elastic Modulus of Buffer Layer from the Density of Buffer Layer

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for calculating the elastic modulus of the buffer layer from the density of the buffer layer includes the following steps:

[0037] a. Measure and calculate the characteristic parameters of the soil and rock buffer layer particles, including the median diameter of soil and rock D, the uneven coefficient of soil and rock particles Cu, and the density of soil and rock S. The median diameter of soil and rock D refers to the particle size of 50% by weight in the soil and rock particles. , Unit mm; soil and rock particle unevenness coefficient Cu is calculated by formula 1; soil and rock particle unevenness coefficient Cu includes three levels, uniform level, basically uniform level and uneven level, soil and rock particle unevenness coefficient Cu≤5 is uniform level; The particle unevenness coefficient 510 is the unevenness level, and the soil and rock particle unevenness coefficient Cu is calculated by formula 1 to determine the level;

[0038] Cu=D 60 / D 10 Formula 1...

Embodiment 2

[0059] A method for calculating the elastic modulus of the buffer layer from the density of the buffer layer includes the following steps:

[0060] a. Measure and calculate the characteristic parameters of the soil and rock buffer layer particles, including the median size of soil and rock D, the uneven coefficient of soil and rock particles Cu, and the compactness of soil and rock S. The median size of soil and rock D refers to the particle size of 50% by weight in the soil and rock particles. , Unit mm; soil and rock particle unevenness coefficient Cu is calculated by formula 1; soil and rock particle unevenness coefficient Cu includes three levels, uniform level, basically uniform level and uneven level, soil and rock particle unevenness coefficient Cu≤5 is uniform level; The particle unevenness coefficient 510 is the unevenness level, and the soil and rock particle unevenness coefficient Cu is calculated by formula 1 to judge the level;

[0061] Cu=D 60 / D 10 Formula 1

[0062]...

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Abstract

The invention discloses a method for calculating elasticity modulus of a buffer layer according to the density of the buffer layer. The method is characterized by comprising the following steps that a, earth and stone buffer layer granule characteristic parameters including earth and stone median size D, an earth and stone granule nonuniform coefficient Cu and earth and stone compactness S are measured and calculated, wherein the earth and stone granule nonuniform coefficient Cu is calculated through a formula 1 and includes three levels including uniform level, basic uniform level and nonuniform level, and the levels of the earth and stone granule nonuniform coefficient Cu are calculated through the formula 1; b, the earth and stone compactness S is calculated through a formula 2; c, theearth and stone elasticity modulus M is calculated according to the earth and stone compactness S. The calculating method fully gives consideration to the influence of specific density on the elasticity modulus, is suitable for actual calculation of wild large-sized coarse and large stone block buffer layers, make calculation results accurate and reliable and has better disaster prevention applicability for prevention and decrease of collapse and falling stones.

Description

Technical field [0001] The invention relates to the field of collapse and rockfall prevention engineering, in particular to a method for calculating the elastic modulus of the buffer layer from the density of the buffer layer. Background technique [0002] Collapse and rock falling are a natural phenomenon that occurs in mountainous areas or highway slopes. After a collapse or rockfall occurs, huge rocks roll down the hillside or the roadside, causing great damage to nearby residential buildings, factories and other construction facilities, or roads. In order to reduce the impact of the impact force, the effective protection of the earth-rock buffer layer is an economical and effective measure. The most economical and applicable buffer layer is composed of stones, sand, soil and other materials, and is composed of one or more of them. Therefore, the particle size of different soil and rock buffer layers has different buffering effects, and the buffering effect can be Expression...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 余斌赵怀宝刘清华
Owner CHENGDU UNIVERSITY OF TECHNOLOGY