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Design of roadway support using a strain softening model

Journal Article


Abstract


  • This paper addresses the significance of the post-failure behaviour of rocks on the stability of underground structures which are under the influence of a high horizontal stress field. A number of 2-D FE model of roadways were constructed based on the data obtained from laboratory testing and field investigations. The models were then analysed using three different solution techniques; simple linear-elastic, non-linear elastic-plastic and elastic-plastic with consideration of post-failure behaviour (softening model). Results indicated that the post-failure behaviour of rocks significantly influence the stress and displacement patterns around the roadway. The stress and displacement patterns as well as the extent of the yield zone around the roadway predicted by the softening model were in good agreement with that from the field study. Based on the results of the study, an appropriate support system has been suggested to govern the stability of roadways. -from Authors

Publication Date


  • 1994

Citation


  • Hematian, J., Porter, I., & Aziz, N. I. (1994). Design of roadway support using a strain softening model. Proc. 13th international conference, ground control in mining, Morgantown, WV, 1994, 50-57.

Scopus Eid


  • 2-s2.0-0028584871

Web Of Science Accession Number


Start Page


  • 50

End Page


  • 57

Volume


Issue


Place Of Publication


Abstract


  • This paper addresses the significance of the post-failure behaviour of rocks on the stability of underground structures which are under the influence of a high horizontal stress field. A number of 2-D FE model of roadways were constructed based on the data obtained from laboratory testing and field investigations. The models were then analysed using three different solution techniques; simple linear-elastic, non-linear elastic-plastic and elastic-plastic with consideration of post-failure behaviour (softening model). Results indicated that the post-failure behaviour of rocks significantly influence the stress and displacement patterns around the roadway. The stress and displacement patterns as well as the extent of the yield zone around the roadway predicted by the softening model were in good agreement with that from the field study. Based on the results of the study, an appropriate support system has been suggested to govern the stability of roadways. -from Authors

Publication Date


  • 1994

Citation


  • Hematian, J., Porter, I., & Aziz, N. I. (1994). Design of roadway support using a strain softening model. Proc. 13th international conference, ground control in mining, Morgantown, WV, 1994, 50-57.

Scopus Eid


  • 2-s2.0-0028584871

Web Of Science Accession Number


Start Page


  • 50

End Page


  • 57

Volume


Issue


Place Of Publication