细粒尾矿静态液化的室内试验研究

doi:10.13722/j.cnki.jrme.2021.0575

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Abstract In order to study the static liquefaction characteristics of fine-grained tailings，the inner mixing method was used to prepare tailings with different fine-grained contents. The static liquefaction characteristics of tailings under different confining pressures and fine contents were studied by undrained consolidated triaxial tests. The test results show that the lower the effective consolidation confining pressure is，the more obvious the static liquefaction of saturated tailings will be. Meanwhile，three liquefaction parameters including undrained brittleness index，liquefaction potential index and instability potential index can be used to reflect the static liquefaction characteristics of tailings. With the increase of fine content，the three liquefaction parameters of tailings show a trend of first increasing and then decreasing，and reach the maximum value when the fine particle content is 30%，while tailings are most prone to static liquefaction at this time. Finally，the static liquefaction characteristics of tailings are classified by using modified state parameters. The rationality of classifying static liquefaction characteristics of tailings by modified state parameters is demonstrated by the test results of other tailings and correlation test analysis.

Key words： geotechnical engineering static liquefaction fine content liquefaction parameter modified state parameters

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	Articles by authors
	HU Zaiqiang1
	CHEN Zhenpeng1
	2
	ZHANG Guangxin3
	QIN Qiuxiang1
	JIAO Hanwei1
	WU Peng1

Cite this article:

HU Zaiqiang1,CHEN Zhenpeng1,2, et al. Laboratory experimental study on static liquefaction of fine tailings[J]. , 2022, 41(S1): 3002-3009.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0575 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/IS1/3002

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