Method for calculating elasticity modulus of buffer layer according to density of buffer layer

A technology of elastic modulus and compactness, applied in the field of rockfall prevention and collapse, can solve the problems of inapplicable coarse rock buffer layer, poor applicability of disaster prevention and mitigation, etc., to improve accuracy, improve accuracy and reliability, Calculate the effect of accurate results

Active Publication Date: 2018-10-16
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • 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

Method used

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  • Method for calculating elasticity modulus of buffer layer according to density of buffer layer
  • Method for calculating elasticity modulus of buffer layer according to density of buffer layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for calculating the modulus of elasticity of the buffer layer by the compactness of the buffer layer, comprising the following steps:

[0037] a. Calculate and obtain the characteristic parameters of soil-rock buffer layer particles, including soil-rock median particle size D, soil-rock particle unevenness coefficient Cu, and soil-rock compactness S. Soil-rock median particle size D refers to the particle size of 50% by weight of soil-rock particles , unit mm; soil-rock particle unevenness coefficient Cu is calculated by formula 1; earth-rock particle unevenness coefficient Cu includes three levels, uniform level, basic uniform level and uneven level, and the unevenness coefficient of soil-rock particle Cu≤5 is uniform level; The particle unevenness coefficient 510 is the uneven grade, and the grade is judged by the soil-rock particle unevenness coefficient Cu calculated by formula 1;

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

[0039] In the formula, D 60 is the pa...

Embodiment 2

[0059] A method for calculating the modulus of elasticity of the buffer layer by the compactness of the buffer layer, comprising the following steps:

[0060] a. Calculate and obtain the characteristic parameters of soil-rock buffer layer particles, including soil-rock median particle size D, soil-rock particle unevenness coefficient Cu, and soil-rock compactness S. Soil-rock median particle size D refers to the particle size of 50% by weight of soil-rock particles , unit mm; soil-rock particle unevenness coefficient Cu is calculated by formula 1; earth-rock particle unevenness coefficient Cu includes three levels, uniform level, basic uniform level and uneven level, and the unevenness coefficient of soil-rock particle Cu≤5 is uniform level; The particle unevenness coefficient 510 is the uneven grade, and the grade is judged by the soil-rock particle unevenness coefficient Cu calculated by formula 1;

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

[0062] In the formula, D 60 is the pa...

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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 a buffer layer from the compactness of the buffer layer. Background technique [0002] Collapse and rockfall are natural phenomena that occur in mountainous areas or on road slopes. After landslides and rockfalls occur, 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 influence of the impact force, it is an economical and effective measure to take effective protection of earth-rock buffer layer. 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-rock buffer layers has different buffering effects, and the buffering effect can be determine...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 余斌赵怀宝刘清华
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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