爆破方法识别滑带试验研究
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摘要
以往对滑坡体中软弱层与滑带的识别主要依赖于钻孔并辅之以工程师的经验。采用在钻孔中进行爆破的方法,通过对地表接收信号的波形分析即可十分方便地识别出软弱层与滑带。简要阐述了该方法的理论依据,通过对现场爆破实验测量信号的分析可以发现,该方法可以减少钻孔数量以及提高滑带识别的精度与效率。
The identification of slip surface for a landslide is mainly based on drilling holes combining with experience of engineers.A brief method to identify weak layer or slip surface existing in a slope is presented by analyzing vibrating signals induced by blasting.The vibrating signals is collected from earth surface in the vicinity of blasting center.At first,the theoretical base of the method is briefly described.By analyzing the signals from in-situ testings,we conclude that the number of drilling holes can be reduced;and the precision for identification of slip surface of a slope can be improved by using this method.
The identification of slip surface for a landslide is mainly based on drilling holes combining with experience of engineers.A brief method to identify weak layer or slip surface existing in a slope is presented by analyzing vibrating signals induced by blasting.The vibrating signals is collected from earth surface in the vicinity of blasting center.At first,the theoretical base of the method is briefly described.By analyzing the signals from in-situ testings,we conclude that the number of drilling holes can be reduced;and the precision for identification of slip surface of a slope can be improved by using this method.
引文
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[3]张杰.声波法桩基质量无损检测中的波形分析[J].岩土力学,1990,11(2):59-65.ZHANG Jie.Waveform analysis in sonic method to NDI of pile[J].Rock and Soil Mechanics,1990,11(2):59-65.
[4]薛亚东,张长根,李兴宏,等.采区断层探测与分布规律研究[J].煤炭学报,2003,28(5):513-516.XUE Ya-dong,ZHANG Chang-gen,LI Xing-hong,et al.Seismic exploration of fault in mining area and study on its distribution law[J].Journal of China Coal Society,2003,28(5):513-516.
[5]许昭永,段永康,许峻,等.桩位下浅层基岩内洞穴的高频震波勘探研究[J].地球物理学进展,2003,18(3):384-390.XU Zhao-yong,DUAN Yong-kang,XU Jun,et al.High-frequency seismic prospecting used to find caves in the rock-mass below stakes[J].Progress in Geophysics,2003,18(3):384-390.
[6]Ding H.Study on Blasting Vibration,Proceedings of The 7th International Symposium on Rock Fragmentation by Blasting[C].Beijing:[s.n.],2002.11-15.
[7]Ding H,Zheng Z M.Source Model for Blasting Vibration and Tentative Application to Engineering Geophysics[A].Proceedings of the 9th International Congress on Sound and Vibration[C].Florida:Orlando,2002.8-11.
[8]Ding H,Zheng Z M.Source model of blasting vibration[J].Science in China,Series E,2002,45(4):395-407.
[9]刘传正,李瑞敏,李铁锋,等.三峡库区白衣庵滑坡防治工程研究[J].中国地质灾害与防治学报,2003,14(1):48-54.LIU Chuan-zheng,LI Rui-min,LI Tie–feng,et al.Study on Baiyi’an landslide control engineering in the Three Gorges Reservior area[J].The Chinese Journal of Geological Hazard and Control,2003,14(1):48-54.
[10]张均锋,丁桦,白金泽.奉节白衣庵老仓屋新滑坡成因分析[J].岩土力学,2004,25(11):1 841-1 844.ZHANG Jun-feng,DING Hua,BAI Jin-ze.Analysis of the mechanism for a new landslide in Fengjie[J].Rock and Soil Mechanics,2004,25(11):1 841-1 844.
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