降雨条件下考虑裂隙土孔隙双峰特性对非饱和土边坡渗流场的影响

doi:10.13722/j.cnki.jrme.2014.1263

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Abstract Based on equivalent continuum media model，the fractured soil located on the slope surface can be regarded as dual-porosity media，including the crack network and the pores of soil matrix，and the degree of fissure and the average fissure width as the introducing variables were taken. According to the capillary theory and the pore-size distribution，an effective method was summarized which can evaluate equivalent bi-modal unsaturated soil property functions for fractured soil. Then this method was applied to analyze an engineering practice on how the crack network affects the seepage field under rainfall infiltration condition. The results show that the crack network provides a priority channel for rainfall infiltration，and the perched water table is formed within the slope typically 1–2 m deep.

Key words： slope engineering rainfall infiltration fractured soil equivalent continuum model bi-modal soil-water characteristic curve

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	DOU Hongqiang1
	2
	HAN Tongchun1
	GONG Xiaonan1

Cite this article:

DOU Hongqiang1,2,HAN Tongchun1, et al. EFFECTS OF BI-MODAL CHARACTERISTICS OF FRACTURED SOIL PORE ON SEEPAGE FIELD OF UNSATURATED SOIL SLOPE[J]. , 2015, 34(S2): 4373-4380.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1263 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4373

[1] 姚海林，郑少河，陈守义. 考虑裂隙及雨水入渗影响的膨胀土边坡稳定性分析[J]. 岩土工程学报，2001，23(5)：606–609.(YAO Hailin，ZHENG Shaohe，CHEN Shouyi. Analysis on the slope stability of expansive soils considering cracks and infiltration of rain[J]. Chinese Journal of Geotechnical Engineering，2001，23(5)：606–609.(in Chinese))

[2] FAN P，LIU Q Q，LI J C. Numerical analysis of rainfall infiltration in the slope with a fracture[J]. Science in China Series E：Technological Sciences，2005，48(Supp.1)：107–120.

[3] 陈铁林，邓刚，陈生水，等. 裂隙对非饱和土边坡稳定性的影响[J]. 岩土工程学报，2006，28(2)：210–215.(CHEN Tielin，DENG Gang，CHEN Shengshui，et al. Effects of fissures on stability of unsaturated soil slope[J]. Chinese Journal of Geotechnical Engineering，2006，28(2)：210–215.(in Chinese))

[4] CHERTKOV V Y，RAVINA I. Shrinking-swelling phenomenon of clay soils attributed to capillary-crack network[J]. Theoretical and Applied Fracture Mechanics，2000，34(1)：61–71.

[5] PETERS R R，KLAVETTER E A. A continuum model for water movement in an unsaturated fractured rock mass[J]. Water Resources Research，1988，24(3)：416–430.

[6] 胡云进，速宝玉，詹美礼. 裂隙岩体非饱和渗流研究综述[J]. 河海大学学报，2000，28(1)：40–46.(HU Yunjin，SU Baoyu，ZHAN Meili. Review of the research on unsaturated seepage flow in fractured rock masses[J]. Journal of Hohai University，2000，28(1)：40–46.(in Chinese))

[7] BURGER C A，SHACKELFORD C D. Evaluating dual porosity of

pelletized diatomaceous earth using bimodal soil-water characteristic curve functions[J]. Canadian Geotechnical Journal，2001，38(1)：53–66.

[8] ZHANG L M，CHEN Q. Predicting bimodal soil-water characteristic curves[J]. Journal of Geotechnical and Geoenvironmental Engineering，2005，131(5)：666–670.

[9] 袁俊平. 非饱和膨胀土的裂隙概化模型和边坡稳定分析[博士学位论文][D]. 南京：河海大学，2003.(YUAN Junping. Generalized model of fissures distribution & slope stability analysis for unsaturated expansive soils.[Ph. D. Thesis][D]. Nanjing：Hohai University，2003. (in Chinese))

[10] FREDLUND D G，XING A. Equations for the soil-water characteristic curve[J]. Canadian Geotechnical Journal，1994，31(4)：521–532.

[11] ZHANG L M，FREDLUND D G. Characteristics of water retention curves for unsaturated fractured rocks[C]// Proceedings of Second Asian Conference on Unsaturated Soils. [S.l.]：[s.n.]，2003：425– 428.

[12] VAN GENUCHTEN M T. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J]. Soil Science Society of America Journal，1980，44(5)：892–898.

[13] 王媛，速宝玉. 单裂隙面渗流特性及等效水力隙宽[J]. 水科学进展，2002，13(1)：61–68.(WANG Yuan，SU Baoyu. Research on the behavior of fluid flow in a single fracture and its equivalent hydraulic aperture[J]. Advance in Water Science，2002，13(1)：61–68.(in Chinese))

[14] 孙蓉琳，梁杏，靳孟贵. 裂隙岩体渗透系数确定方法综述[J]. 水文地质工程地质，2006，33(6)：120–123.(SUN Ronglin，LIANG Xing，JIN Menggui. Review on determination of hydraulic conductivity of fractured rocks[J]. Hydrogeology and Engineering Geology，2006，33(6)：120–123.(in Chinese))

[15] PRUESS K，WANG J S Y，TSANG Y W. On thermo hydrologic conditions near high-level nuclear wastes emplaced in partially saturated fractured tuff 2. Effective continuum approximation[J]. Water Resources Research，1990，26(6)：1 249–1 261.

[16] 龚壁卫，NG C W W，包承纲，等. 膨胀土渠坡降雨入渗现场试验研究[J]. 长江科学院院报，2002，19(增)：94–97.(GONG Biwei，NG C W W，BAO Chenggang，et.al. Field study of the effects of rainfall infiltration channel slope of expansive soil[J]. Journal of Yangtze River Scientific Research Institute，2002，19(Supp.)：94–97.(in Chinese))