微测井电法在基坑围护防渗检测中可行性研究
发布时间：2018-11-06 20:55
【摘要】：为了有效地检测基坑围护结构的渗漏隐患,保证基坑施工安全,以电极管探测理论为理论基础,推导出微测井电法探测范围的理论模型。分别利用AM法与AMN法对现场隔水幕布(研究对象)进行横向裂缝探测与竖向裂缝探测的数值模拟研究,研究结果表明:AM法对横向裂缝的感知能力大于竖向裂缝的感知能力,AMN法对竖向裂缝的感知能力大于横向裂缝的感知能力;分析电极管距、电极极距和裂缝尺寸对微测井电法探测敏感度的影响,研究结果表明:AM装置敏感度主要与电极极距和待测裂缝宽度有关,AMN装置敏感度主要与电极管距和待测裂缝长度有关,并针对工程实际提出参数设置的一般要求,通过物理模拟与工程中的实际应用,验证了微测井电法理论在地连墙防渗检测中的可靠性与准确性,实现了检测过程的等效简化。
[Abstract]:In order to effectively detect the hidden percolation of the retaining structure of foundation pit and ensure the safety of the foundation pit construction, the theoretical model of the detection range of micro-logging electric method is derived based on the theory of electrode tube detection. Using AM method and AMN method to simulate the detection of transverse crack and vertical crack, the results show that the sensing ability of AM method to transverse crack is greater than that of vertical crack. The perception ability of AMN method to vertical fracture is greater than that of transverse crack. The effects of electrode distance, electrode pole distance and fracture size on the sensitivity of micrologging electric method are analyzed. The results show that the sensitivity of the AM device is mainly related to the electrode distance and the width of the fracture to be measured. The sensitivity of AMN device is mainly related to the distance of electrode tube and the length of crack to be measured. The general requirements of setting parameters are put forward in view of the engineering practice. Through physical simulation and practical application in engineering, the sensitivity of the device is analyzed. The reliability and accuracy of the micro-logging electric method theory in the anti-seepage detection of the ground connection wall are verified, and the equivalent simplification of the detection process is realized.
【作者单位】： 青岛理工大学土木工程学院;中国海洋大学山东省海洋环境地质工程重点实验室;青岛海洋科学与技术国家实验室;中铁十四局集团有限公司;
【基金】：国家自然科学基金资助项目(41672272,41427803) 泰山学者工程专项经费资助(2015 212)~~
【分类号】：TU753
，
本文编号：2315446
[Abstract]:In order to effectively detect the hidden percolation of the retaining structure of foundation pit and ensure the safety of the foundation pit construction, the theoretical model of the detection range of micro-logging electric method is derived based on the theory of electrode tube detection. Using AM method and AMN method to simulate the detection of transverse crack and vertical crack, the results show that the sensing ability of AM method to transverse crack is greater than that of vertical crack. The perception ability of AMN method to vertical fracture is greater than that of transverse crack. The effects of electrode distance, electrode pole distance and fracture size on the sensitivity of micrologging electric method are analyzed. The results show that the sensitivity of the AM device is mainly related to the electrode distance and the width of the fracture to be measured. The sensitivity of AMN device is mainly related to the distance of electrode tube and the length of crack to be measured. The general requirements of setting parameters are put forward in view of the engineering practice. Through physical simulation and practical application in engineering, the sensitivity of the device is analyzed. The reliability and accuracy of the micro-logging electric method theory in the anti-seepage detection of the ground connection wall are verified, and the equivalent simplification of the detection process is realized.
【作者单位】： 青岛理工大学土木工程学院;中国海洋大学山东省海洋环境地质工程重点实验室;青岛海洋科学与技术国家实验室;中铁十四局集团有限公司;
【基金】：国家自然科学基金资助项目(41672272,41427803) 泰山学者工程专项经费资助(2015 212)~~
【分类号】：TU753
，
本文编号：2315446
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