CAJ | 학술논문

通过电阻率原位测试和室内土工试验，研究黏性土电阻率特性及电阻率与岩土参数的相互关系。在武汉市轨道交通7号线勘察过程中，沿轨道走向，在长江一级阶地共布置完成电阻率测井22组，并于测井位置采取原状土样进行常规土工试验、无侧限抗压试验、直剪快剪试验及三轴 UU 试验。通过研究发现：黏性土电阻率随含水量及孔隙比的增加而增加，随无侧限抗压强度增加而减小。根据黏性土三轴 UU 试验结果，其电阻率随黏聚力、内摩擦角的增加而减小。通过拟合，给出了黏性土电阻率与岩土参数间的经验公式，其相关性显著。
통과전조솔원위측시화실내토공시험，연구점성토전조솔특성급전조솔여암토삼수적상호관계。재무한시궤도교통7호선감찰과정중，연궤도주향，재장강일급계지공포치완성전조솔측정22조，병우측정위치채취원상토양진행상규토공시험、무측한항압시험、직전쾌전시험급삼축 UU 시험。통과연구발현：점성토전조솔수함수량급공극비적증가이증가，수무측한항압강도증가이감소。근거점성토삼축 UU 시험결과，기전조솔수점취력、내마찰각적증가이감소。통과의합，급출료점성토전조솔여암토삼수간적경험공식，기상관성현저。
The resistivity of soil is an important parameter to describe its electrical conductivity.Through in-situ testing of resistivity and laboratory tests,the characteristics of resistivity of clayey soil and the relationship between resistivity and geotechnical parameters were studied.22 logs of resistivity were measured in the first-stage terrace of Wuhan district.All these logs were placed along the traces of the No.7metro of Wuhan.Routine soil test,non-confined compression test,quick shear test and triaxial shear test were done by using samples taken from these logs. It was found that,firstly,the resistivity of clayey soil increased with the increase of water content and void ratio;secondly,the resistivity decreased with the increase of non-confined compressive strength;thirdly;according to the result of triaxial shear test,the resistivity decreased with the increase of cohesion and angle of internal friction. Through linear and polynomial fit,the mathematic expression between resistivity and geotechnical parameters of clayey soil were offered.The correlation between the resistivity and those indexes are significant.