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1999 Fiscal Year Final Research Report Summary

Development of numerical simulation program for blasting in heterogeneous and inhomogeneous rocks

Research Project

Project/Area Number 10650920
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 資源開発工学
Research InstitutionFukui University of Technology

Principal Investigator

SASSA Koichi  Fukui University of Technology, Faculty of Engineering, Professor, 工学部, 教授 (40025953)

Project Period (FY) 1998 – 1999
KeywordsBlasting / Numerical simulation / Stress wave / Dynamic stress / Dynamic breakage
Research Abstract

In order to simulate dynamic stresses and wave propagation in heterogeneous and inhomogeneous materials, a numerical simulation code based on the finite difference approximation to the equation of motion was developed. In this code, breakage of materials by strong stress waves is taken into account. Therefore, by using this code, numerical simulation of rock breakage by blasting and blast vibration in heterogeneous and inhomogeneous rocks can be made. This code was written by Fortran and can run in a personal portable computer.
Computation of stress distribution and pattern of rock breakage by blasting with one free face for various conditions were performed by using this code and a personal computer. The time histories of stresses caused by strong stress waves and pattern of rock breakage are shown by using graphic programs those were developed in this study. The results obtained coincided well with the ones expected from the results observed at actual blasting.

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Published: 2001-10-23  

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