Study on Damage Characteristic of Underground Cavern Blasting Excavation Based on Dynamic Damage Constitutive Model
- DOI
- 10.2991/aeece-15.2015.133How to use a DOI?
- Keywords
- Blasting damage model, Damage criteria, Smooth blasting, Blasting parameters
- Abstract
The dynamic disturbance to the remaining surrounding rock mass of underground caverns produced by blasting excavation can not be ignored. Considering the rock mass damage induced by compression-shear stress in the zone near the blasthole, the KUS dynamic damage constitutive model was improved, and adding the defined damage discrimination value to the KUS model.Using the improved KUS damage model to conduct the numerical calculation of the Xiluodu hydropower station left-bank underground powerhouse, to study the recommended smooth blasting parameters of side wall protective layer rock mass of underground powerhouse. The results show that the damage depth of rock mass around the blasthole was influenced by the cartridge diameter of blasthole, the increasing of the hole spacing only changed the shape of the damage zone, and can not reduce the maximum damage depth.In engineering design, the cartridge diameter of blasthole and the hole spacing can not be enlarged optionally, must be strictly in accordance with the requirements of the blasting design.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Qian Dong AU - Xinping Li AU - Hang Zhao PY - 2015/09 DA - 2015/09 TI - Study on Damage Characteristic of Underground Cavern Blasting Excavation Based on Dynamic Damage Constitutive Model BT - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering PB - Atlantis Press SP - 668 EP - 672 SN - 2352-5401 UR - https://doi.org/10.2991/aeece-15.2015.133 DO - 10.2991/aeece-15.2015.133 ID - Dong2015/09 ER -