Abstract
Remodeled clay and sand rock specimens were prepared by designing lateral confinement and water drainage experiments based on the stress exerted on granular materials in a waste dump. An in situ test was conducted in an internal waste dump; the physical and mechanical parameters of the remodeled rock mass dumped at different time and depths were measured. Based on statistics, regression analysis was performed with regard to the shearing stress parameters acquired from the two tests. Other factors, such as remodeling pressure (burial depth), remodeling time (amount of time since waste was dumped), and the corresponding functional relationship, were determined. Analysis indicates that the cohesion of the remodeled clay and its remodeling pressure are correlated by a quadratic function but are not correlated with remodeling time length. In situ experimental results indicate that the shear strength of reshaped granular materials in the internal dump is positively correlated with burial depth but poorly correlated with time length. Cohesion C and burial depth H follow a quadratic function, specifically for a short time since waste has been dumped. As revealed by both in situ and laboratory experiments, the remodeling strength of granular materials varies in a certain pattern. The consistency of such materials verifies the reliability of the remodeling experimental program.
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CAI Qing-xiang, ZHOU Wei, SHU Ji-sen, LIU Yong, PENG Hong-ge. Analysis and application on end-slope timeliness of internal dumping under flat dipping ore body in large surface coal mine [J]. Journal of China University of Mining & Technology, 2008, 37(6): 740–744. (in Chinese)
XIE Gui-hua, ZHANG Jia-sheng, LIU Rong-gui. Application of matrix-based system reliability method in complex slopes [J]. Journal of Central South University, 2013, 20(3): 812–820.
LIU Yong, CHE Zhao-xue, LI Zhi-qiang, CAI Qing-xiang. Analyses of end slope remnant coal mining and slope exposure time [J]. Journal of China University of Mining & Technology, 2006, 35(6): 727–730. (in Chinese)
ZHAO Yu, CUI Peng, HU Liang-bo, HUECKEL T. Multi-scale chemo-mechanical analysis of the slip surface of landslides in the Three Gorges, China [J]. Science China Technological Sciences, 2011, 54(7): 1757–1765.
MA Shao-kun, HUANG Mao-song, HU Ping, YANG Chao. Soil-water characteristics and shear strength in constant water content triaxial tests on Yunnan red clay [J]. Journal of Central South University, 2013, 20(5): 1412–1419.
MIAO Lin-chang, CUI Ying, CHEN Ke-jun, JING Fei. Test on strength of unsaturated remolded expansive soils [J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 274–276. (in Chinese)
HUANG Ying-hao, ZHU Wei, ZHANG Chun-lei, WANG Shun-cai, OHKI T. Mechanical characteristics and strength source of remolded solidified dredged material [J]. Rock and Soil Mechanics, 2009, 30(5): 1352–1356. (in Chinese)
WANG Liang, XIE Jian, ZHANG Nan, WANG Sheng-wei, LV Yi-yan. Influences of water content on undrained shear strength of remolded dredged materials [J]. Rock and Soil Mechanics, 2012, 33(10): 2973–2978. (in Chinese)
XIONG Cheng-ren. Study on strength behavior of remolded unsaturated cohesive soil [D]. Changsha: Central South University, 2005. (in Chinese)
GUO Chang-bao, ZHANG Yong-shuang, MENG Qing-wei, ZHENG Guang, LI Hai-hua. Research on shear strength of remolding diatomite by ring shear tests [J]. Rock and Soil Mechanics, 2013, 34(1): 109–114. (in Chinese)
BOJANA D, LUDVIK T. The impact of structure on the undrained shear strength of cohesive soils [J]. Engineering Geology, 2007, 92(1): 88–96.
SHRIWANTHA B V, SHINYA N, SHO K, SEIICHI G. Effects of over consolidation ratios on the shear strength of remoulded slip surface soils in ring shear [J]. Engineering Geology, 2012, 131(2): 29–36.
BINOD T, BEENA A. New correlation equations for compression index of remolded clays [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2012, 138(6): 757–762.
VINOD P, SRIDHARAN A, DEEPA K A. Remoulded shear strength at plastic and semi-solid states [J]. Geotechnical Engineering, 2013, 166(5): 515–517.
MOHAMMED M M, ROSLAN H, FIRAS S. Assessment of rapid impact compaction in ground improvement from in-situ testing [J]. Journal of Central South University, 2013, 20(3): 786–790.
DEHGHAN S, SHAHRIAR K, MAAREFVAND P, GOSHTASBI K. 3-D numerical modelling of domino failure of hard rock pillars in Fetr6 Chromite Mine, Iran, and comparison with empirical methods [J]. Journal of Central South University, 2013, 20(2): 541–549.
GAREY A F, RACHEL G F. Bank undercutting and tension failure by groundwater seepage: Predicting failure mechanisms [J]. Earth Surface Processes and Landforms, 2014, 39: 758–765.
TERZAGHI K, PECK R B, MESRI G. Soil mechanics in engineering practice [M]. 3rd ed. New York: John Wiley & Sons, Inc., 1996.
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Foundation item: Project(2014XT01) supported by Research Funds for the Central Universities, China; Project(51034005) supported by the National Natural Science Foundation of China; Project(2012AA062004) supported by High-Tech Research and Development Program of China (863 Program); Project(NCET-13-1022) supported by the Program for New Century Excellent Talents in University, China
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Han, L., Zhou, W., Cai, Qx. et al. Experimental study on remodeling strength of granular materials under different loads and lengths of time. J. Cent. South Univ. 22, 2783–2790 (2015). https://doi.org/10.1007/s11771-015-2809-y
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DOI: https://doi.org/10.1007/s11771-015-2809-y