【摘要】：為了有效地檢測基坑圍護結(jié)構(gòu)的滲漏隱患,保證基坑施工安全,以電極管探測理論為理論基礎(chǔ),推導(dǎo)出微測井電法探測范圍的理論模型。分別利用AM法與AMN法對現(xiàn)場隔水幕布(研究對象)進行橫向裂縫探測與豎向裂縫探測的數(shù)值模擬研究,研究結(jié)果表明:AM法對橫向裂縫的感知能力大于豎向裂縫的感知能力,AMN法對豎向裂縫的感知能力大于橫向裂縫的感知能力;分析電極管距、電極極距和裂縫尺寸對微測井電法探測敏感度的影響,研究結(jié)果表明:AM裝置敏感度主要與電極極距和待測裂縫寬度有關(guān),AMN裝置敏感度主要與電極管距和待測裂縫長度有關(guān),并針對工程實際提出參數(shù)設(shè)置的一般要求,通過物理模擬與工程中的實際應(yīng)用,驗證了微測井電法理論在地連墻防滲檢測中的可靠性與準(zhǔn)確性,實現(xiàn)了檢測過程的等效簡化。
[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.
【作者單位】： 青島理工大學(xué)土木工程學(xué)院;中國海洋大學(xué)山東省海洋環(huán)境地質(zhì)工程重點實驗室;青島海洋科學(xué)與技術(shù)國家實驗室;中鐵十四局集團有限公司;
【基金】：國家自然科學(xué)基金資助項目(41672272,41427803) 泰山學(xué)者工程專項經(jīng)費資助(2015 212)~~
【分類號】：TU753
，

本文編號：2315446