【摘要】：針對(duì)城建深基坑圍護(hù)和水利防滲的地下連續(xù)墻病害隱患探測難題及特點(diǎn),考慮到地連墻滲漏會(huì)造成墻體內(nèi)外電阻率顯著的變化,可引入地球物理探測方法中的直流電法技術(shù),但傳統(tǒng)地面電法的隱患探測效果不理想.考慮到地下連續(xù)墻施工時(shí)在墻體中設(shè)置測斜管,因此可開展地連墻內(nèi)部缺陷的跨孔電阻率層析成像.而鑒于非線性反演具有對(duì)初始模型依賴性不強(qiáng)的特點(diǎn),提出了基于貝葉斯反演理論的電阻率層析成像.在MATLAB開發(fā)環(huán)境下,編程完成的多組不同地電異常體的數(shù)值模擬反演計(jì)算表明,反演結(jié)果的信息豐富,對(duì)異常體的成像準(zhǔn)確高效,且反演結(jié)果的穩(wěn)定性好.
[Abstract]:In view of the difficult problems and characteristics of hidden danger detection of underground continuous wall diseases in deep foundation pit enclosure and water conservancy seepage prevention of urban construction, considering that the leakage of ground connecting wall will cause significant changes in electrical resistance inside and outside the wall, the DC electric method technology in geophysical detection method can be introduced. However, the hidden danger detection effect of traditional ground electrical method is not ideal. Considering that the oblique pipe is set up in the wall during the construction of the underground continuous wall, the cross-hole resistivity tomography of the internal defects of the ground connecting wall can be carried out. In view of the fact that nonlinear inversion is not dependent on the initial model, a resistance tomography based on Bayesian inversion theory is proposed. In the MATLAB development environment, the numerical simulation inversion calculation of several groups of different geoelectric anomalies shows that the inversion results are rich in information, accurate and efficient for the imaging of abnormal bodies, and the inversion results are stable.
【作者單位】： 同濟(jì)大學(xué)海洋與地球科學(xué)學(xué)院;云南省建設(shè)投資控股集團(tuán)有限公司;浙江水利水電學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41374146)資助
【分類號(hào)】：P631.322

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