Slope stability analyzing method

A stable analysis and slope technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of cumbersome analysis process, unsuitable computer, restraint, etc., and achieve the effect of simple calculation

Inactive Publication Date: 2015-02-04
XIAN CHANGQING TECH ENG
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Problems solved by technology

At present, the on-site evaluation of the stability of loess slopes mainly relies on the experience of engineers, which has the disadvantage of being uncertain and subject to experience; although the computer numerical analysis technology is mature in principle and accurate in calculation, due to the cumbersome analysis process, the computer is not suitable for deep trenches. It operates in the wild environment of barren mountains, so it is not used in the project

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Embodiment Construction

[0030] A slope stability analysis method will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Such as figure 1 A slope stability analysis method shown includes the following steps:

[0032] 1) Input slope parameters: slope height H, slope length L, friction angle φ, cohesion C, gravity γ, saturation gravity γ sat , number of strips n, seepage volume ratio S;

[0033] 2) Suppose the center O and radius R of the slope;

[0034] 3) Segment and number the part where the circular arc drawn based on the hypothetical center O and the radius R intersects with the half slope;

[0035] 4) Use the following formula to calculate the L of each bar i , W i , θ i value;

[0036] L i =R*(θ i -θ i-1 ) ———the length of the arc at the bottom of each block;

[0037] θ i =arcsin[(O x -X i ) / R] ———The inclination angle of the middle point D of the i-th bar bottom

[0038] θ 0 =arcsin[(O x -L) / R]——the inclination angle of ...

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Abstract

The invention provides a slope stability analyzing method, which comprises the following steps that 1, slope parameters are input; 2, the circle center O and the radius R of a slope are assumed; 3, a crossed part of a half slope and a circular arc drawn according to the assumed circle center O and radius R is subjected to strip splitting and numbering; 4, Li, Wi and theta values of each strip are calculated; 5, the safety factor Fs is obtained according to the Li, Wi and theta values; 6, a plurality of Fs are obtained; 7, the minimum values of the safety factor Fs is screened and is used as the slope safety factor to be output; according to the slope length and the slope height of the half slope, the circle center and the radius of a slope landslide are assumed, in addition, a circular arc is drawn according to the assumed circle center and radius, a crossed part of the circular arc and the slope is subjected to strip splitting, in addition, the slope safety factor is calculated, meanwhile, the circle center and the radius are assumed for many times, the slope safety factor is calculated for many times, in addition, the calculated safety factors are compared, and the minimum value is selected as the slope safety factor. The scheme has the advantage that the calculation is simple and accurate.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a slope stability analysis method. Background technique [0002] The Loess Plateau in western China is full of ravines. When the rainy season comes from July to September every year, these slopes are prone to landslides, causing casualties and economic losses. Therefore, it is particularly important to correctly evaluate the slope stability in the site selection of engineering construction. At present, the on-site evaluation of the stability of loess slopes mainly relies on the experience of engineers, which has the disadvantage of being uncertain and subject to experience; although the computer numerical analysis technology is mature in principle and accurate in calculation, due to the cumbersome analysis process, the computer is not suitable for deep trenches. It operates in the wild environment of barren mountains, so it is not adopted by the project. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 赵胜杰王治军耿生明杜志伟骆建文徐建军吴军张宏杰吴江林
Owner XIAN CHANGQING TECH ENG
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