土的視電阻率的各向異性指數(shù)隨裂隙深度開展的變化規(guī)律研究
發(fā)布時(shí)間:2018-05-07 06:06
本文選題:裂隙深度 + 視電阻率 ; 參考:《科學(xué)技術(shù)與工程》2014年34期
【摘要】:土中裂隙不論對(duì)環(huán)境、工程還是農(nóng)業(yè)都有危害。目前的研究裂隙的方法有很多,但都有其缺陷,特別在裂隙深度上的研究沒有一個(gè)經(jīng)濟(jì)無損可以廣泛應(yīng)用的方法。用單層電極模型來分析研究具有不同裂隙開展的土的視電阻率的各向異性指數(shù)(AI),掌握各向異性指數(shù)的變化規(guī)律;用有機(jī)玻璃板作為裂隙,通過四電極法做多層電極室內(nèi)試驗(yàn)證上訴規(guī)律。得出單層電極測(cè)量裂隙深度對(duì)土體的AI的影響存在1倍電極距離的影響范圍,AI變化率在裂隙相對(duì)深度接近于0點(diǎn)取到峰值,以此提出裂隙的深度的測(cè)試方法。
[Abstract]:Cracks in soil are harmful to environment, engineering and agriculture. At present, there are many methods to study fracture, but all of them have their defects, especially in the depth of fracture, there is no economic lossless method that can be widely used. The anisotropy index of apparent resistivity of soils with different fractures is studied by single layer electrode model, and the variation law of anisotropy index is grasped, and the organic glass plate is used as fracture. Through four-electrode method to do multi-layer electrode indoor test evidence appeal rule. It is concluded that the influence of single layer electrode on the AI of soil is one time of the electrode distance. The change rate of AI reaches the peak value when the relative depth of fracture is close to zero, and the method of measuring the depth of fracture is put forward.
【作者單位】: 河海大學(xué)巖土力學(xué)與堤壩工程教育部重點(diǎn)實(shí)驗(yàn)室 巖土工程研究所;
【基金】:國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃項(xiàng)目(2012CB719805) 浙江大學(xué)開放基金項(xiàng)目(2011904)資助
【分類號(hào)】:TU411
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本文編號(hào):1855703
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