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爆破振动作用下含断层边坡动力响应分析

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依据施加爆破地震波后含断层边坡稳定性模拟计算结果,研究了爆破振动作用下不同断层厚度边坡的动力响应变化规律.结果表明,爆破地震波在边坡坡表及断层区域传播时存在高程放大效应;断层厚度越大,爆破地震波衰减越快;随着断层厚度增加,边坡在爆破振动作用下产生的位移逐渐增大,整体抵抗变形能力变小;爆破振动作用下不同断层厚度对边坡稳定性影响差异明显,断层厚度2~8 m时边坡稳定性呈持续快速降低趋势,断层厚度超过8 m后边坡稳定性趋于平稳.
Dynamic Response of Slope with Fault Under Blast Vibration
The stability of slope with fault under the impact of blast-induced seismic wave was analyzed by using simulation to study the dynamic response of slope with different fault thickness under the impact of explosive vibration.The results show that there exists elevation amplification effect when blast-induced seismic wave propagates along slope surface and fault area.The thicker the fault,the faster the attenuation of blast-induced seismic wave.As the fault becomes thicker,the displacement of slope under the action of blast-induced vibration gradually increases,and the overall deformation resistance becomes smaller.Under the action of blast vibration,the fault with different thickness obviously brings different influence to slope stability.With the fault thickness of 2-8 m,the slope stability decreases continuously and rapidly,and tends to be stable as the fault thickness exceeds 8 m.

blast-induced seismic wavedynamic responseslopefault thicknessslope stabilityblast vibration

李屹、夏祥生、徐继业、张良兵、黄永辉、李源源、张智宇

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攀钢集团矿业有限公司设计研究院,四川攀枝花 617000

攀钢集团攀枝花新白马矿业有限责任公司,四川攀枝花 617000

昆明理工大学电力工程学院,云南昆明 650093

昆明理工大学国土资源工程学院,云南昆明 650093

云南省中-德蓝色矿山与特殊地下空间开发利用重点实验室,云南昆明 650093

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爆破地震波 动力响应 边坡 断层厚度 边坡稳定性 爆破振动

国家自然科学基金

52064025

2024

矿冶工程
长沙矿冶研究院有限责任公司 中国金属学会

矿冶工程

CSTPCD北大核心
影响因子:1.137
ISSN:0253-6099
年,卷(期):2024.44(1)
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