The Improved PSO Arithmetic for Identifying Ground Stress Based on Rock Core Discing Observation

Abstract:

Article Preview

Identifying ground stress based on rock core discing can save a lot of surveying cost, so studying “rock core disicing” has great meaning. Aiming at the limitation of conventional methods, the particle swarm optimization (PSO) arithmetic is introduced to be combined with numerical simulation, so as to identify the ground stress based on rock core disicing observation. The objective function of optimization is constructed by combing Mohr-Coulomb criterion and tension criterion. Adopts dynamically adjusting momentum term method and steric compression method so as to improve the PSO in convergence velocity and globally searching property. The proposed method is mentioned and used to identify the ground stress of Bakken formation in USA. The arithmetic has good convergence speed and the identified results are coincident with the former reported results.

Info:

Periodical:

Edited by:

Qi Luo

Pages:

945-949

DOI:

10.4028/www.scientific.net/AMM.55-57.945

Citation:

A. N. Jiang et al., "The Improved PSO Arithmetic for Identifying Ground Stress Based on Rock Core Discing Observation", Applied Mechanics and Materials, Vols. 55-57, pp. 945-949, 2011

Online since:

May 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.