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金属矿山 ›› 2013, Vol. 42 ›› Issue (10): 130-133+139.

• 安全与环保 • 上一篇    下一篇

露采爆破振动对拟建水库坝体影响研究

赵奎1,2,王明3,何文1,王晓军3,柯新华4   

  1. 1.江西理工大学工程研究院;2.钨资源高效开发及应用技术教育部工程研究中心;3.江西理工大学资源与环境工程学院;4.江西铜业集团公司德兴铜矿
  • 出版日期:2013-10-15 发布日期:2014-01-02
  • 基金资助:

    * 江西省科技厅科技支撑计划项目(编号:20121122040027),江西省高等学校科技落地计划项目(编号:KJLD12027)。

Study on the Effect of the Open-pit Blasting Vibration on Reservoir Dam Planned to Be Constructed

Zhao Kui1,2,Wang Ming3,He Wen1,Wang Xiaojun3,Ke Xinhua4   

  1. 1.Engineering Research Institute,Jiangxi University of Science and Technology;2.Engineering Research Center of High-efficiency Development and Application Technology Institute for Tungsten Resources,Ministry of Education;3.Faculty of Resources & Environmental Engineering,Jiangxi University of Science and Technology;4.Dexing Copper Mine,Jiangxi Copper Co.,Ltd.
  • Online:2013-10-15 Published:2014-01-02

摘要: 某露天采场采用中深孔爆破,采场最终边界附近拟建酸性水库坝体。为了研究露天采场爆破振动对坝体稳定性的影响,首先对露天采场爆破振动进行现场测试,对测试结果进行了回归分析,得到了爆破振动的最大振速公式;其次,根据现场实际情况对坝体处最大振速公式进行了修正;在此基础上,采用数值模拟的方法研究了露采不同时期爆破振动作用下坝体的安全系数。结果表明:露采一期爆破振动过程中,坝体是稳定的;露采二期爆破振动过程中,坝体稳定性较差,提出了降低单段最大药量的技术措施。

关键词: 露天采场, 爆破振动, 坝体, 振动速度, 数值模拟

Abstract: The medium-length hole of blasting is applied in an open-pit mine and an acid reservoir dam is planned to be constructed nearby the final boundary of it.In order to study the effect of blasting vibration on stability of the dam,the field testing of blasting vibration was carried out and the formula of the maximum vibration velocity was obtained by regression analysis method.Furthermore,the formula of maximum vibration velocity at the dam was modified according to the actual engineering environment.Based on this,the safety factor of the dam affected by blasting vibration at different stages of open-pit mining was analyzed by using the numerical simulation.The results showed that the dam is stable during the first stage of blasting and the dam has a poor stability during the second stage of blasting.The plan of decreasing the maximum explosive dosage at the second stage was proposed.

Key words: Open-pit mine, Blasting vibration, Dam, Vibration velocity, Numerical simulation