Skip to Main Content
ASME Press Select Proceedings

Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Editor
Baosong Ma
Baosong Ma
Search for other works by this author on:
ISBN:
9780791802922
No. of Pages:
1760
Publisher:
ASME Press
Publication date:
2009

The secondary stress distribution and deformation mechanism of excavated mining tunnel of −62m and −74m in Daye mine was studied in the paper. Firstly, the wall-rock was compartmentalized to different engineering geology group and mechanical parameters of wall-rock were determined based on engineering geological exploration and rock mechanics test. Then the state of stress and strain of excavated tunnel was simulated by FLAC3D software, the wall-rock deformation mechanism was analyzed too. The numerical simulation results were validated by convergence monitoring data that obtained in −74m mining tunnel. Studied results show that the range of secondary stress distribution exist differences corresponding to different mining tunnel wall-rock condition, but the characteristic of principal stress distribution is similar that compress stress centralized in sidewall and tensile stress centralized in vault and floor of the mining tunnel.

This content is only available via PDF.
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal