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金属矿山 ›› 2016, Vol. 45 ›› Issue (03): 48-52.

• 采矿工程 • 上一篇    下一篇

爆破振动对露天矿边坡稳定性的影响

张天文1,2,才庆祥1,冀宪成3,韩流1,舒继森1   

  1. 1.中国矿业大学矿业工程学院,江苏 徐州 221116;2.云南省小龙潭矿务局,云南 开远 661699;3.北方魏家峁煤电有限责任公司,内蒙古 鄂尔多斯 017000
  • 出版日期:2016-03-15 发布日期:2016-05-17
  • 基金资助:

    * 国家高技术研究发展计划(863计划)项目(编号:2012AA062004),中国博士后科学基金项目(编号:2015M580491),教育部新世纪优秀人才支持计划项目(编号:NCET-13-1022)。

Effects of Blasting Vibration on the Slope Stability

Zhang Tianwen1,2,Cai Qingxiang1,Ji Xiancheng2,Han Liu1,Shu Jisen1   

  1. 1.School of Mines,China University of Mining and Technology,Xuzhou 221116,China;2.Xiaolongtan Mining Administration of Yunnan Province,Kaiyuan,661699,China;3.North Weijiamao Power and Coal Co., Ltd.,Ordos 017000,China
  • Online:2016-03-15 Published:2016-05-17

摘要: 为了研究爆破振动对边坡稳定性的影响规律,揭示关键的技术参数,建立了考虑振动应力的平面滑动稳定系数计算公式。借助数值模拟分析了布沼坝露天矿西帮变形区受爆破振动影响时的稳定系数变化规律。结果表明:边坡稳定系数随着与爆源中心距离的增加呈对数规律增长,当影响距离超过300 m以后,爆破振动对西帮边坡稳定性的影响可以忽略。边坡稳定系数与振动速度曲线的协同性较高,峰值出现的时刻相同,振幅满足比例关系。

关键词: 爆破振动, 露天矿, 边坡, 稳定性

Abstract: In order to study the influence law of blasting vibration on slope stability,and to reveal the key technical parameters of blasting,the plane sliding stability coefficient calculation formula was established with the consideration of vibration stress.Based on the numerical simulation analysis method,the stability coefficient variation law of the west slope in Buzhaoba surface mine when influenced by blasting vibration was analyzed,the results showed that the slope stability coefficient has a logarithmic growth with the distance from the explosive center increase.When the distance is longer than 300 m,the influence of blasting vibration on the west slope stability can be ignored.The synergistic effect of slope stability coefficient and vibration velocity is higher,the peak appeared at the same time and the amplitude satisfied the proportional relationship.

Key words: Blasting vibration, Surface mine, Slope, Stability