磷尾矿电阻率与其力学性质关系的试验研究

doi:10.13722/j.cnki.jrme.2014.10.021

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Abstract The impacts of moisture content，dry density，temperature and other factors on the electric resistivity of phosphate tailings are studied using the method of two-phase electrode. Modified triaxial apparatus is used to conduct triaxial tests on the specimen of phosphate tailings to obtain the stress-strain curves and the changes of electric resistivity synchronously. Then stress-strain-electric resistivity curve and the relationships between the electric resistivity and the cohesion and internal friction angle are obtained. Results show that the electric resistivity of phosphate tailings decreases with the increase of water content，temperature and dry density. The initial electric resistivity correlated negatively with the shear strength，the cohesion and the internal friction angle. During the triaxial compression process，the electric resistivity of phosphate tailings increases initially and then decreases with the growing of strain.

Key words： soil mechanics phosphate tailings electric resistivity mechanical property impact factor synchronized triaxial test

Received: 31 March 2014

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.10.021 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I10/2132

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