地震波速法和声波法在银盘江水电站坝基检测中的综合应用
|
摘要
目前在坝基检测应用中的物探方法有单孔声波法、跨孔声波法和地震波速法等。实际工作中,地震波速法主要是对坝基整体岩性是否完整及岩溶裂隙的分布做出评价,声波法主要是确定岩溶裂隙等地质缺陷问题的深度分布,单孔声波和跨孔声波结合起来则可以更好的确定整个岩体地质缺陷问题的分布情况。这两种方法若能合理组合,可以相互佐证,提高坝基检测的准确性。通过综合的物探方法在银盘江水电站实施,此方案取得了很好的检测效果,给施工单位提供了有效科学的指导。
In the detection of dam foundation,single-hole acoustic method,cross-hole acoustic method,and seismic velocity method are usually used.In the practical work,the seismic velocity method is mainly used to evaluate the integrity of the whole lithology of foundation and the distribution of the karst fissure.Acoustic method can determine the depth distribution of geological defects like karst fissure.Combination of single-hole and cross-hole acoustic method can make it better to determine the distribution of geological defects of the whole rock.The accuracy of dam foundation detection can be improved if these two methods are used jointly.Comprehensive geophysical methods are applied in the Yinpanjiang River hydropower station and good results are achieved.They provide effective and scientific guidance to the construction units.
In the detection of dam foundation,single-hole acoustic method,cross-hole acoustic method,and seismic velocity method are usually used.In the practical work,the seismic velocity method is mainly used to evaluate the integrity of the whole lithology of foundation and the distribution of the karst fissure.Acoustic method can determine the depth distribution of geological defects like karst fissure.Combination of single-hole and cross-hole acoustic method can make it better to determine the distribution of geological defects of the whole rock.The accuracy of dam foundation detection can be improved if these two methods are used jointly.Comprehensive geophysical methods are applied in the Yinpanjiang River hydropower station and good results are achieved.They provide effective and scientific guidance to the construction units.
引文
[1]张高萍,孙永清.综合物探在思林水电站坝基检测中的应用[J].贵州水力发电,2010,24(3):19-
22.[ZHANG GP,SUN Y Q.Application ofintegrated geophysical prospecting method in the damfoundation detection of Silin River hydropower station[J].Guizhou Water Power,2010,24(3):19-22.(in Chinese)]
[2]戴前伟,何刚.大坝坝基检测的新技术———伪随机流场法测井[J].地球物理学进展,2004,19(2):460-464.[DAI Q W,HE G.New technology for damfoundation detecting—Psuedorandom flow-field methodlogging[J].Progress in Geophysics,2004,19(2):460-464.(in Chinese)]
[3]杨宁安.物探技术在光照水电站坝基检测中的应用[J].贵州水力发电,2006,20(5):28-31.[YANGN A.Application of integrated geophysical prospectingmethod in the dam foundation detection of GuangzhaoRiver hydropower station[J].Guizhou Water Power.2006,20(5):28-31.(in Chinese)]
[4]王颂,季福全.乌江银盘水电站左岸高边坡稳定性研究[J].人民长江,2007,38(9):87-90.[WANGS,JI F Q.Wujiang Yinpan Hydroppwer Station leftbank Site Extra-high Slope Stability Analysis[J].Yangtze River,2007,38(9):87-90.(in Chinese)]
[5]王振东.浅层地震勘探应用技术[M].北京:地质出版社,1994.[WANG Z D.Application techniques ofShallow Seismic Exploration[M].Beijing:GeologyPress,1994.(in Chinese)]
[6]长江勘测规划设计研究院.重庆乌江银盘江水电站可行性研究报告[R].武汉:武汉长江水利委员会,2006.[Changjiang Institute of Survey.TheFeasibility Research Report of Wujiang YinpangHydroppwer in Chongqing[R].Wuhan:ChangjiangRiver Commission,2006.(in Chinese)]
[7]胡祥云,杨迪坤.环境与工程地球物理的发展趋势[J].地球物理学进展,2006,21(2):598-604.[HUX Y,YANG D K.The developing trends ofenvironmental and engineering geophysics[J].Progress in Geophysics,2006,21(2):598-604.(inChinese)]
22.[ZHANG GP,SUN Y Q.Application ofintegrated geophysical prospecting method in the damfoundation detection of Silin River hydropower station[J].Guizhou Water Power,2010,24(3):19-22.(in Chinese)]
[2]戴前伟,何刚.大坝坝基检测的新技术———伪随机流场法测井[J].地球物理学进展,2004,19(2):460-464.[DAI Q W,HE G.New technology for damfoundation detecting—Psuedorandom flow-field methodlogging[J].Progress in Geophysics,2004,19(2):460-464.(in Chinese)]
[3]杨宁安.物探技术在光照水电站坝基检测中的应用[J].贵州水力发电,2006,20(5):28-31.[YANGN A.Application of integrated geophysical prospectingmethod in the dam foundation detection of GuangzhaoRiver hydropower station[J].Guizhou Water Power.2006,20(5):28-31.(in Chinese)]
[4]王颂,季福全.乌江银盘水电站左岸高边坡稳定性研究[J].人民长江,2007,38(9):87-90.[WANGS,JI F Q.Wujiang Yinpan Hydroppwer Station leftbank Site Extra-high Slope Stability Analysis[J].Yangtze River,2007,38(9):87-90.(in Chinese)]
[5]王振东.浅层地震勘探应用技术[M].北京:地质出版社,1994.[WANG Z D.Application techniques ofShallow Seismic Exploration[M].Beijing:GeologyPress,1994.(in Chinese)]
[6]长江勘测规划设计研究院.重庆乌江银盘江水电站可行性研究报告[R].武汉:武汉长江水利委员会,2006.[Changjiang Institute of Survey.TheFeasibility Research Report of Wujiang YinpangHydroppwer in Chongqing[R].Wuhan:ChangjiangRiver Commission,2006.(in Chinese)]
[7]胡祥云,杨迪坤.环境与工程地球物理的发展趋势[J].地球物理学进展,2006,21(2):598-604.[HUX Y,YANG D K.The developing trends ofenvironmental and engineering geophysics[J].Progress in Geophysics,2006,21(2):598-604.(inChinese)]
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心