Indoor and outdoor combined method for determining in-situ critical hydraulic gradient

The invention discloses a method for determining an in-situ critical hydraulic gradient by combining indoor and outdoor conditions. The method comprises the following steps: testing a soil body to obtain various parameters of a soil body sample; carrying out a seepage failure test under a stress con...

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Hauptverfasser:	DENG GANG, WU SHUAIFENG, ZHOU LIPEI, LIANG ZHENGFENG, YAN JUN, WU FUQIANG, CAI HONG, XIAO JIANZHANG, ZHOU XINGBO, LU XIN, SUN LIMING, HU MINYUN, LI WEICHAO, XIE DINGSONG, LI WEIWEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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creator	DENG GANG WU SHUAIFENG ZHOU LIPEI LIANG ZHENGFENG YAN JUN WU FUQIANG CAI HONG XIAO JIANZHANG ZHOU XINGBO LU XIN SUN LIMING HU MINYUN LI WEICHAO XIE DINGSONG LI WEIWEI
description	The invention discloses a method for determining an in-situ critical hydraulic gradient by combining indoor and outdoor conditions. The method comprises the following steps: testing a soil body to obtain various parameters of a soil body sample; carrying out a seepage failure test under a stress condition indoors to obtain a critical hydraulic gradient under a certain soil body sample length, consolidation pressure and seepage direction; determining a hydraulic slope reduction coefficient and a standardized stress according to the parameters, and performing numerical fitting on the hydraulic slope reduction coefficient and the standardized stress to obtain a fitting relationship; according to the in-situ stress of the to-be-determined sample, obtaining in-situ standardized stress, and obtaining an in-situ hydraulic gradient reduction coefficient through the fitting relationship; and obtaining the in-situ critical hydraulic gradient according to the obtained in-situ hydraulic gradient reduction coefficient and
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subjects	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
title	Indoor and outdoor combined method for determining in-situ critical hydraulic gradient
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