摘要
为了保证北关拦河闸的安全,采用高密度面波技术对水闸防渗墙进行检测,通过数值模拟完成检测范围内地质构造剪切波分布图及地基标贯值分布断面。防渗墙位处的剪切波速度分层表明水闸防渗墙基本完整;用范围内地质构造的剪切波速度换算其对应的标贯值,对比地质土层的初设资料,发现地层标贯值得到提高;本次检测未发生问题,建议进行水闸底板脱空检测,判断沉降原因。研究成果可为其他水闸或水工建筑物的检测提供理论和方法上的支持。
To ensure the safety of the Beiguan sluices,high-density surface wave technology is utilized for detecting the anti-seepage wall of the sluice.Anti-seepage walls in water gates were detected using high-density surface wave technology.The distribution map of geological structure shear waves and the distribution cross-section of foundation standard penetration values within the detection range were completed through numerical simulation.The results indicated that the layered shear wave velocity stratification at the location of the anti-seepage wall was basically complete.Moreover,the conversion of shear wave velocity of geological structures within the range into their corresponding standard penetration value(SPV)"n",which revealed an improvement in the formation's SPV compared to the preliminary design data of geological soil layers.There were no issues with this test.However,it's recommended to conduct detection of sluice floor voids to ascertain the cause of settlement.This study will serve as a valuable theoretical and methodological resource for the detection of other sluices or hydraulic structures.
作者
田苡菲
尚海龙
郭静娜
田铮
李铮
黄涛
TIAN Yifei;SHANG Hailong;GUO Jingna;TIAN Zheng;LI Zheng;HUANG Tao(Beijing Jianghe Zhongji Engineering Consulting Co.,Ltd.,Beijing 100073,China;Beijing Lvdu Jinxiu Water Construction Co.,Ltd.,Beijing 101212,China;Beijing North Canal Management Office,Beijing 101125,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)
出处
《北京水务》
2024年第2期78-82,共5页
Beijing Water
关键词
水闸
高密度面波
防渗墙
剪切波
桩基标贯值
sluice
high density surface wave
impervious wall
shear wave
standard penetration value of pile foundation.
