微震监测与爆破测振对公路边坡的联合控制
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摘要
为研究贵州某高陡岩质公路边坡在施工期间受到爆破震动的影响,在分别探讨了微震监测和爆破测振原理的基础上,用IMS微震监测设备探索爆破震动下边坡岩体内部微震活动规律,TC4850爆破测振仪研究爆破震动对边坡表面稳定性的影响,两者结合,对施工期的边坡稳定性进行联合控制。结果表明,微震事件集中分布的岩体内部区域对应的岩体表面质点振动速度较大,联合控制可靠性更强,值得在公路工程开挖边坡稳定性监测中广泛推广。
In order to study a high and steep rocky road slope during construction under the influence of blasting vibration in Guizhou. On the basis of discussing respectively the principle of microseismic monitoring and the blasting vibration,IMS microseismic monitoring equipment is used to explore the internal law of seismic activity of the slope rock mass under blasting vibration,at the same time,TC4850 blasting vibration is used to study the effect of blasting vibration on the surface of slope stability. The two methods are combined to take a joint control of slope stability during the construction. Results show that when the microseismic events of the inner region of slope rock appear densely,the vibration velocity of its corresponding rock mass surface particle is larger,the reliability of joint control is more stronger,the method is worth widely popularization in stability monitoring of excavation slope in the highway engineering.
In order to study a high and steep rocky road slope during construction under the influence of blasting vibration in Guizhou. On the basis of discussing respectively the principle of microseismic monitoring and the blasting vibration,IMS microseismic monitoring equipment is used to explore the internal law of seismic activity of the slope rock mass under blasting vibration,at the same time,TC4850 blasting vibration is used to study the effect of blasting vibration on the surface of slope stability. The two methods are combined to take a joint control of slope stability during the construction. Results show that when the microseismic events of the inner region of slope rock appear densely,the vibration velocity of its corresponding rock mass surface particle is larger,the reliability of joint control is more stronger,the method is worth widely popularization in stability monitoring of excavation slope in the highway engineering.
引文
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[12]朱传云,卢文波,董振华.岩质边坡爆破振动安全判据综述[J].爆破,1997,14(4):13-17.
[13]黎剑华,张龙,颜荣贵.爆破地震波作用下的边坡失稳机制与临界振动速度[J].矿冶,2001,10(1):11-15.
[2]郑长安,吴尚.层状岩土质混合高边坡施工的影响因素及其稳定数值分析[J].公路工程,2013,38(6):61-64.
[3]罗旋,杨威.路堑边坡地质勘察和稳定性分析[J].公路工程,2013,38(1):35-37.
[4]彭文祥,赵明华.小东江电站左岸边坡稳定性分析及治理措施[J].公路工程,2005,30(4):57-60.
[5]张永哲.岩质高边坡开挖爆破动力稳定分析[J].工程爆破,1996,2(4):31-32.
[6]陈强.公路边坡稳定性研究与分析及综合治理[D].长沙:湖南大学,2005.
[7]张银平.岩体声发射与微震监测定位技术及其应用[J].工程爆破,2002,8(1):59-61.
[8]徐奴文,唐春安,周钟,等.岩石边坡潜在失稳区域微震识别方法[J].岩石力学与工程学报,2011,30(5):895-897.
[9]徐奴文,唐春安,沙椿,等.锦屏一级水电站左岸边坡微震监测系统及其工程应用[J].岩石力学与工程学报,2010,29(30):921-924.
[10]王德志.爆破振动对岩质公路边坡稳定性的影响研究[D].石家庄:河北工业大学,2001.
[11]陈明,卢文波,吴亮,等.小湾水电站岩石高边坡爆破振动速度安全阈值研究[J].岩石力学与工程学报,2007,26(1):52-54.
[12]朱传云,卢文波,董振华.岩质边坡爆破振动安全判据综述[J].爆破,1997,14(4):13-17.
[13]黎剑华,张龙,颜荣贵.爆破地震波作用下的边坡失稳机制与临界振动速度[J].矿冶,2001,10(1):11-15.
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