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Landslide interval stability analysis method based on particle swarm optimization algorithm

A particle swarm optimization and analysis method technology, applied in the field of geotechnical engineering, can solve problems such as inaccurate calculation results, and achieve the effect of avoiding the expansion of interval results

Active Publication Date: 2019-12-13
HOHAI UNIV
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Problems solved by technology

[0004] Purpose of the invention: In view of the problem that in the existing landslide interval stability analysis method, the expansion of the interval calculation time interval results leads to inaccurate calculation results, the present invention provides a landslide interval stability analysis method based on particle swarm optimization algorithm

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  • Landslide interval stability analysis method based on particle swarm optimization algorithm
  • Landslide interval stability analysis method based on particle swarm optimization algorithm
  • Landslide interval stability analysis method based on particle swarm optimization algorithm

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Embodiment

[0040] A landslide has an elevation of 1410m-1870m and a volume of 48 million cubic meters. The upper part is piled gravel, the lower part is bedrock, and the middle line is the water level. The leading edge of the landslide is partially in a creeping state, and its calculated profile is as follows: figure 1 ; According to the displacement points with large deformation determined according to the monitoring data, see figure 2 The center solid black dots (point 1, point 2, point 3), through the displacement points, make the arc surface as the sliding surface, and use vertical bars to divide the sliding body.

[0041] Adopt the landslide interval stability analysis method based on particle swarm optimization algorithm of the present invention to carry out the safety and stability calculation of this landslide, particle swarm optimization algorithm parameter is as follows table 1, and uncertainty variable and interval range thereof are as follows table 2; The iterative converge...

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Abstract

The invention discloses a landslide interval stability analysis method based on a particle swarm optimization algorithm, and the method comprises the following steps: (1), determining an uncertainty variable and an interval thereof in stability analysis according to the landslide engineering condition, and enabling the uncertainty variable and the interval thereof to serve as a search variable anda search space of the particle swarm optimization algorithm; (2) setting particle swarm optimization algorithm parameters, and determining an interval limit balance safety coefficient function as a fitness function according to a landslide limit balance method and an uncertainty variable; (3) initializing the speed and the position of each particle, calculating the adaptive value of each particle, determining an individual, a global minimum / maximum safety factor and the corresponding individual, and updating the particle position; and (4) iterating until a set iteration frequency is reached and the global minimum / maximum safety coefficient is not obviously improved, wherein the global minimum / maximum safety coefficient is the lower limit value / upper limit value of the landslide safety coefficient calculation interval. According to the method, an accurate safety coefficient interval can be obtained, and the interval expansion problem is effectively avoided.

Description

technical field [0001] The invention belongs to the geotechnical engineering problem of rock mass deformation and stress state analysis, and specifically relates to a method for analyzing stability of landslide intervals based on particle swarm optimization algorithm. Background technique [0002] The formation of rock and soil mass is extremely complex, and it is a highly complex uncertain and uncertain system, and people's understanding of it also has a certain degree of uncertainty. The landslide interval stability analysis method introduces interval mathematics into the landslide stability analysis. It only needs to know the upper and lower bounds of the uncertainty parameters, use the interval number to describe the uncertainty variable, and use the interval mathematics method to analyze and obtain the calculation results It is a closed interval including the real parameter solution, which provides a certain basis for landslide stability assessment. [0003] However, w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06N3/00
CPCG06F17/10G06N3/006
Inventor 王环玲杨玲徐卫亚向志鹏
Owner HOHAI UNIV
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