新型排水体麦秸秆辊真空预压排水室内实验

doi:10.13722/j.cnki.jrme.2015.1118

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Abstract As coastal development proceeds，the disposal of silt with high water content raises challenges to engineering construction in coastal soft soil areas. Because conventional approaches such as excavation，replacement，drying or modification with ash are either costly or restricted by site，weather or other factors，and straw combustion causes air pollution，wheat straw rolls was proposed to be used as new vertical drains in place of sand drain or plastic drainage board used in traditional vacuum drainage consolidation for treating silt with high water content. For discussing the feasibility and applicability of treating silt with high water content by straw drains on vacuum preloading，a series of indoor experiments have been performed. For providing theoretical basis for optimization design of straw drain，the sensitivity analysis on factors influencing drainage result and theoretical research on the optimal level combination design have been made. Indoor experiments show that treating silt with high water content by straw drains on vacuum preloading is feasible and effective. The larger is the diameter of straw roll，the better is the drainage effect，and the larger is the consolidation settlement. Indoor experiment and grey correlation analysis reveal that the diameter is more sensitive than the initial density. Indoor experiments and variance analysis reveal that the diameter of straw roll is the primary factor while the initial intensity is the secondary factor and the optimal combination of the factors is 20 cm diameter and 0.121 g/cm3 density.

Key words： foundation straw rolls silt vacuum preloading

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	Articles by authors
	LIANG Tonghao1
	YAN Zhengchun1
	LIU Chao2
	YU Xiaojuan3

Cite this article:

LIANG Tonghao1,YAN Zhengchun1,LIU Chao2, et al. Indoor experiment on vacuum preloading of wheat straw roller[J]. , 2016, 35(S1): 3432-3440.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1118 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS1/3432

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