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首页> 外文会议>International Conference on Advances in Energy, Environment and Chemical Engineering >Study on Damage Characteristic of Underground Cavern Blasting Excavation Based on Dynamic Damage Constitutive Model
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Study on Damage Characteristic of Underground Cavern Blasting Excavation Based on Dynamic Damage Constitutive Model

机译：基于动态损伤本构模型的地下洞穴爆破挖掘损伤特性研究

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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.
机译：通过爆破挖掘产生的地下洞穴剩余岩石质量的动态障碍不能忽视。考虑到Blasthole附近的区域中压缩剪切应力引起的岩体质量损伤，改善了KUS动态损伤本构模型，并将定义的损伤判别值添加到KUS模型中。利用改进的KUS损伤模型来进行左岸地下厂房左岸地下电站的数值计算，研究了地下电站侧墙保护层岩体的推荐光滑爆破参数。结果表明，Blasthole周围的岩石质量的损伤深度受膨胀筒直径的影响，孔间距的增加仅改变了损伤区的形状，不能降低最大损坏深度。在工程设计中，普拉索孔和孔间距的盒式直径可任选地扩大，必须严格按照爆破设计的要求。

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