基于大型直剪试验的土石混合体剪切带变形特征试验研究

doi:10.13722/j.cnki.jrme.2017.1321

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (912 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Soil-rock mixture has the characteristics of distinct heterogeneity，obvious structural and size effects，and thus has the complex mechanical properties. In this research，the deformation properties and the influencing factors of shear band of soil-rock mixture during the shearing process were investigated with the servo motor controlled system of geotechnical experiment developed in-house(RSM-1000). The shear band deformation tests on soil-rock mixture were conducted considering the effects of different rock contents(0，30%，50%，70%)，normal pressures(50，200，300，400 kPa) and rock sizes(L1，L2，L3) respectively. The deformation characteristics of shear band were monitored by putting the aluminum wires and dry ash into the hole inside the samples. The results show that when the rock content is less than 30%，rocks have little effect on the deformation of samples，and that the mechanical strengths of samples mainly depend on the sand. When the rock content reaches 50%，samples are transformed into a skeleton structure，rocks have obvious effects on deformations and the mechanical strengths of samples are affected by rocks and sand simultaneously. When the rock content reaches 70%，samples are transformed into the rock structure with empty space. Under the condition of high rock content and rock particles of large diameter，the rocks through the shear surface tend to extrude and roll during the shear process. The rocks around the shear surface are mainly affected by dilation，and present extrusion，particle breakage and redistribution. The shearing deformations of the samples are comprised of three distinct stages and can be depicted as the failure of thrust landslide with the deformation from back to front or compound landslide with the deformation from two slides to the middle. At the first stage，the cracks were generated on the top of the backward slope under the effect of active soil pressure，which leads to the sink，compaction and instability of the top of backward slope. Then，the front edge of the slope begins to deform and move forward. Finally，the shearing dislocation of the soil-rock mass and the progressive expansion failure of the sliding face result in the cut-through of shearing plane and the whole destruction of the slope.

Key words： soil mechanics soil-rock mixture(SRM) landslide sliding zone shear band structure effect size effect large scale direct shear test

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HU Feng1
	2
	3
	LI Zhiqing1
	2
	3
	HU Ruilin1
	2
	3
	ZHOU Yingxin4
	5
	YUE Ruiqiang5

Cite this article:

HU Feng1,2,3, et al. Research on the deformation characteristics of shear band of soil-rock#br# mixture based on large scale direct shear test[J]. , 2018, 37(3): 766-778.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1321 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/I3/766

[1] 油新华. 土石混合体的随机结构模型及其应用研究[博士学位论文][D]. 北京：北京交通大学，2001.(YOU Xinhua. Stochastic structural model of the earth-rock aggregate and its application[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2001.(in Chinese))
[2] 徐文杰. 土石混合体细观结构力学及其边坡稳定性研究[博士学位论文][D]. 北京：中国科学院地质与地球物理研究所，2008.(XU Wenjie. Study on meso-structural mechanical(M-SR)of soil-rock mixture(S-RM) and its slope stability[Ph. D. Thesis][D]. Beijing：Institude of Geology and Geophysics Chinese Academy of Sciences，2008.(in Chinese))
[3] 徐文杰，胡瑞林. 土石混合体概念、分类及意义[J]. 水文地质与工程地质，2009，26(4)：50–56.(XU Wenje，HU Ruilin. Conception，classification and significations of soil-rock mixture[J]. Hydrogeology and Engineering Geology，2009，26(4)：50–56.(in Chinese))
[4] 赫建明. 三峡库区土石混合体的变形与破坏机制研究[博士学位论文][D]. 北京：中国矿业大学，2004.(HE Jianming. Study on deformation and failure mechanisms of rock-soil aggregate in Three Gorges Reservoir area[Ph. D. Thesis][D]. Beijing：China University of Mining and Technoligy，2004.(in Chinese))
[5] 徐文杰，张海洋. 土石混合体研究现状及发展趋势[J]. 水利水电科技进展，2013，33(1)：80–88.(XU Wenjie，ZHANG Haiyang. Research status and development trend of soil-rock mixture[J]. Advances in Science and Technology of Water Resources，2013，33(1)：80–88.(in Chinese))
[6] 廖秋林，李晓，郝钊，等. 土石混合体的研究现状及研究展望[J]. 工程地质学报，2006，14(6)：800–807.(LIAO Qiulin，LI Xiao，HAO Zhao，et al. Current status and future trends of studies on rock and soil aggregates(RSA)[J]. Journal of Engineering Geology，2006，14(6)：800–807.(in Chinese))
[7] 周中，傅鹤林，刘宝琛，等. 土石混合体渗透性能的试验研究[J].湖南大学学报：自然科学版，2006，33(6)：25–28.(ZHOU Zhong，FU Helin，LIU Baochen，et al. Experimental study of the permeability of soil-rock-mixture[J]. Journal of Hunan University：Natural Science，2006，33(6)：25–28.(in Chinese))
[8] 王新. 土石混合体力学特性影响因素及破坏机制研究[硕士学位论文][D]. 武汉：长江科学院，2010.(WANG Xin. Research on influence factors of mechanics characteristics and failure mechanism of soil-rock mixture[M. S. Thesis][D]. Wuhan：Yangtze River Scientific Research Institute，2010.(in Chinese))
[9] 廖秋林，李晓，李守定. 土石混合体重塑样制备及其压密特征与力学特性分析[J]. 工程地质学报，2010，18(3)：385–391.(LIAO Qiulin，LI Xiao，LI Shouding. Sample remodeling，compactness characteristic and mechanical behaviors of rock-soil mixture[J]. Journal of Engineering Geology，2010，18(3)：385–391.(in Chinese))
[10] 李兴瑞. 土石混合体的变形特性试验研究[硕士学位论文][D]. 大连：大连理工大学，2012.(LI Xinrui. Experimental study on deformation characteristics of earth-rock aggregate[M. S. Thesis][D]. Dalian：Dalian University of Technology，2012.(in Chinese))
[11] 王宇，李晓，李守定，等. 单轴压缩条件下土石混合体开裂特征研究[J]. 岩石力学与工程学报，2015，34(增1)：3 541–3 552. (WANG Yu，LI Xiao，LI Shouding，et al. Cracking deformation characteristics for rock and soil aggregate under uniaxial compressive test[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：3 541–3 552.(in Chinese))
[12] 李晓，廖秋林，赫建明，等. 土石混合体力学特性的原位试验研究[J]. 岩石力学与工程学报，2007，26(12)：2 377–2 384.(LI Xiao，LIAO Qiulin，HE Jianming，et al. Study on in-situ tests of mechanical characteristics on soil-rock aggregate[J]. Chinese Journal of Rock Mechanical and Engineering，2007，26(12)：2 377–2 384.(in Chinese))
[13] 油新华，汤劲松. 土石混合体野外水平推剪试验研究[J].岩石力学与工程学报，2002，21(10)：1 537–1 540.(YOU Xinhua，TANG Jinsong. Research on horizonal push-shear in-situ test of soil and rock-mixture[J]. Chinese Journal of Rock Mechanical and Engineering，2002，21(10)：1 537–1 540.(in Chinese))
[14] 徐文杰，胡瑞林，谭儒蛟，等. 虎跳峡龙蟠右岸土石混合体野外试验研究[J]. 岩石力学与工程学报，2006，25(6)：1 270–1 277.(XU Wenjie，HU Ruilin，TAN Rujiao，et al. Study on field test of rock-soil aggregate on right bank of Longpan in Tiger-leaping Gorge Area[J]. Chinese Journal of Rock Mechanical and Engineering，2006，25(6)：1 270–1 277.(in Chinese))
[15] COLI N，BERRY P，BOLDINI D. In situ non-conventional shear tests for the mechanical characteristics of a bimrock(BimTest)[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(1)：95–102.
[16] MILLER E A，SOWERS G F. The strength characteristics of soil-aggregate mixture[J]. Highway Research Board Bulletin，1957，183：16–23.
[17] 李长圣，张丹，王宏宪，等. 基于CT扫描的土石混合体三维数值网格的建立[J]. 岩土力学，2014，35(9)：2 731–2 736.(LI Changsheng，ZHANG Dan，WANG Hongxian，et al. 3D mesh generation for soil-rock mixture based CT scanning[J]. Rock and Soil Mechanics，2014，35(9)：2 731–2 736.(in Chinese))
[18] 王宇，李晓，胡瑞林，等. 岩土超声波测试研究进展及应用综述[J]. 工程地质学报，2015，23(2)：287–300.(WANG Yu，LI Xiao，HU Ruilin，et al. Review of research process and application of ultrasonic testing for rock and soil[J]. Journal of Engineering Geology，2015，23(2)：287–300.(in Chinese))
[19] COOK B D. The effect of stone content，size，and shape on the engineering properties of a compacted silty clay[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1990，27(2)：245–253.
[20] 田湖南，焦玉勇，王浩，等. 土石混合体力学特性的颗粒离散元双轴试验模拟研究[J]. 岩石力学与工程学报，2015，34(增1)：3 564–3 573.(TIAN Hunan，JIAO Yuyong，WANG Hao，et al. Research on biaxial test of mechanical characteristics on soil-rock aggregate(SRA) based on particle flow code simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：3 564–3 573.(in Chinese))
[21] 丁秀丽，李耀旭，王新. 基于数字图像的土石混合体力学性质的颗粒流模拟[J]. 岩石力学与工程学报，2010，29(3)；477–484. (DING Xiuli，LI Yaoxu，WANG Xin. Particle flow modeling mechanical properties of soil and rock mixtures based on digital image[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(3)：477–484.(in Chinese))
[22] 贾学明，柴贺军，郑颖人. 土石混合料大型直剪试验的颗粒离散元细观力学模拟研究[J]. 岩土力学，2010，31(9)：2 695–2 703.(JIA Xueming，CHAI Hejun，ZHENG Yingren. Mesomechanics research of large direct shear test on soil and rock aggregate mixture with particle flow code simulation[J]. Rock and Soil Mechanics，2010，31(9)：2 695–2 703.(in Chinese))
[23] 刘新荣，涂义亮，王林枫，等. 土石混合体的剪切面分形特征及强度产生机制[J]. 岩石力学与工程学报，2017，36(9)：2 260–2 274. (LIU Xinrong，TU Yiliang，WANG Linfeng，et al. Shear failure surface characteristics and strength generation mechanism of soil-rock aggregate[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 260–2 274.(in Chinese))
[24] 董云. 土石混合料力学特性的试验研究[硕士学位论文][D]. 重庆：重庆交通大学，2005.(DONG Yun. Test research on the mechanics characteristics of rock-soil aggregate mixture[M. S. Thesis][D]. Chongqing：Chongqing Jiaotong University，2005.(in Chinese))
[25] 舒志乐，刘新荣，刘保县. 基于分形理论的土石混合体强度特征研究[J]. 岩石力学与工程学报，2009，28(增1)：2 651–2 656.(SHU Zhile，LIU Xinrong，LIU Baoxing. Study of strength properties of earth rock aggregate based on fractals[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：2 651–2 656.(in Chinese))
[26] 徐文杰，张海洋，许强，等. 土石混合体直剪离散元数值试验研究[J]. 计算力学学报，2014，31(2)：228–234.(XU Wenjie，ZHANG Haiyang，XU Qiang，et al. Numerical simulations of direct shear test with soil-rock mixture using discrete element method[J]. Chinese Journal of Computational Mechanics，2014，31(2)：228–234.(in Chinese))
[27] 独莎莎. 土石混合体的强度、变形特征与土–石相互作用研究[硕士学位论文][D]. 南京：南京大学，2014.(DU Shasha. Study on the deformation， strength characteristics of the soil-rock mixture and the interaction mechanism between soil and gravel[M. S. Thesis][D]. Nanjing：Nanjing University，2014.(in Chinese))
[28] CHANDLER R J. The inclination of talus，Arctic talus terraces，and other slopes composed of granular materials[J]. Journal of Geology，1973，81(1)：1–14.
[29] LINDQUIST E S. The strength and deformation properties of mélange[Ph. D. Thesis][D]. Berkeley：University of California，1994.
[30] 夏加国，胡瑞林，高伟. 土石混合体强度特性的大型三轴试验[J]. 工程地质学报，2016，24(增1)：1 211–1 218.(XIA Jiaguo，HU Ruilin，GAO Wei. Research on mechanical characteristic of the soil rock mixtures by large-scale triaxial shear tests[J]. Journal of Engineering Geology，2016，24(Supp.1)：1 211–1 218.(in Chinese))
[31] 金磊，曾亚武. 块石形状对土石混合体力学行为影响的颗粒流模拟[J]. 计算力学学报， 2016，33(5)：753–759.(JIN Lei，ZENG Yawu. Particle flow simulation for effects of rock block shape on mechanical behavior of soil-rock mixture[J]. Chinese Journal of Computational Mechanics，2016，33(5)：753–759.(in Chinese))
[32] 李志清，王伟，史思强，等. 一种滑坡抗剪强度及其剪切带变形测试方法[P]. 中国：ZL2015103594909，2017–08–25.(LI Zhiqing，WANG Wei，SHI Siqiang，et al. A test method for shear strength of landslide and deformation of shear band[P]. China：ZL2015103594909，2017–08–25.(in Chinese))
[33] 徐文杰，胡瑞林，岳中琦，等. 土石混合体细观结构及力学特性数值模拟研究[J]. 岩石力学与工程学报，2007，26(2)：300–311.(XU Wenjie，HU Ruilin，YUE Zhongqi，et al. Mesostructural character and numerical simulation of mechanical properties of soil-rock mixtures[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(2)：300–311.(in Chinese))
[34] 孟祥跃，李世海，张均锋. 柔性边界加载试验机研制[J]. 岩石力学与工程学报，2004，23(10)：1 760–1 764.(MENG Xiangyue，LI Shihai，ZHANG Junfeng. Study and manufacture of flexible boundary loading testing machine[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(10)：1 760–1 764.(in Chinese))
[35] 孙永帅，胡瑞林. 土石混合体变形破坏的不同形态基覆面效应试验研究[J]. 岩石力学与工程学报，2016，35(增1)：2 907–2 914. (SUN Yongshuai，HU Ruilin. Experimental study of different shape bedrock surfaces about deformation and failure of soil and rock mixture[J]. Chinese Journal of Rock Mechanical and Engineering，2016，35(Supp.1)：2 907–2 914.(in Chinese))
[36] 许强，黄润秋，程谦恭，等. 三峡库区泄滩滑坡滑带土特征研究[J]. 工程地质学报，2003，11(4)：354–359.(XU Qiang，HUANG Runqiu，CHENG Qiangong，et al. Study on soil properties in sliding zone of Xietan landslide on the There-Gorges Reservoir[J]. Journal of Engineering Geology，2003，11(4)：354–359.(in Chinese))
[37] 余琴琴. 云南某典型滑坡特征分析及稳定性评价[J]. 甘肃水利水电技术，2016，52(3)：38–46.(YU Qinqin. Characteristic analysis and stability evaluation of landslide in Yunnan[J]. Gansu Water Resources and Hydropower Technology，2016，52(3)：38–46.(in Chinese))
[38] 韩俊，王君，田杰，等. 雅安天功寺滑坡特征及形成机制分析[J]. 地质灾害与环境保护，2015，26(1)：3–8.(HAN Jun，WANG Jun，TIAN Jie，et al. Features and formation mechanism of the landslide at Tiangonsi temple in Ya?an[J]. Journal of Geological Hazards and Environment Preservation，2015，26(1)：3–8.(in Chinese))
[39] 叶琼瑶. 九圩滑坡的钻孔测斜分析[J]. 道路工程，2017，(3)：112–114.(YE Qiongyao. Borehole inclinometer analysis of landslide in Jiuyu[J]. Highway Engineering，2017，(3)：112–114.(in Chinese))
[40] 王玉平，削汉全，刘成. 珉江岸某边坡滑坡勘察与治理[J]. 宜宾学院学报，2017，(6)：1–6.(WANG Yuping，XIAO Hanquan，LIU Chen. Investigation and study of slope landslide of Minjiang[J]. Journal of Yibin Uinversity，2017，(6)：1–6.(in Chinese))
[41] 李雯，王飞飞. 潼关县凤凰山滑坡稳定性分析[J]. 陕西地质，2017，35(1)：79–82.(LI Wen，WANG Feifei. Stability analysis of landslide occurring in Fenghuangshan mountain of Tongguan County[J]. Geology of Shanxi，2017，35(1)：79–82.(in Chinese))
[42] 乌云飞. 秦巴山区土石混合体滑坡变形破坏机制研究[硕士学位论文][D]. 西安：长安大学，2012.(WU Yunfei. Study on deformation and failure mechanism of landslide of the soil-rock mixture in the Qinba Mountain[M. S. Thesis][D]. Xi?an：Chang?an University，2012.(in Chinese))
[43] 腾鸿伟. 普格县大槽乡大槽村滑坡成因分析及治理[J].甘肃水利水电技术，2017，53(7)：22–25.(TEN Hongwei. Analysis of cause and treatment of landslide in Pu?ge County[J]. Gansu Water Resources and Hydropower Technology，2017，53(7)：22–25.(in Chinese))
[44] 李松，黎志恒，庞志刚，等. 兰州市凤凰山报恩寺滑坡发育特征及变形分析[J]. 兰州大学学报：自然科学版，2015，51(6)：790–796.(LI Song，LI Zhiheng，PANG Zhigang，et al. Developing and deforming characteristics of Bao?ensi landslide in Phoenix Mouuntain of Lanzhou City[J]. Journal of Lanzhou University：Natural Science，2015，51(6)：790–796.(in Chinese))
[45] 朱俊霖. 宣汉县三墩乡偏岩子滑坡特征及稳定性分析[J].路基工程，2013，(5)：176–180.(ZHU Junlin. Analysis on characteristics and stability of Pianyanzi Landslide in Sandun Town，Xuanhan County[J]. Subgrade Engineering，2013，(5)：176–180.(in Chinese))
[46] 欧阳振华，李世海，戴志胜. 块石对土石混合体力学性能的影响研究[J]. 实验力学，2010，25(1)：61–67.(OUYANG Zhenhua，LI Shihai，DAI Zhisheng. Study on the influence of block to the mechanism of soil mixture[J]. Journal of Experiment Mechanics，2010，25(1)：61–67.(in Chinese))
[47] 邓华锋，原先凡，李建林，等. 土石混合体直剪试验的破坏特征及抗剪强度取值方法研究[J]. 岩石力学与工程学报，2013，32(增2)：4 065–4 072.(DENG Guafeng，YUAN Xianfan，LI Jianlin，et al. Research on failure characteristics and determination method for shear strength of earth-rock aggregate in direct shear tests[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：4 065–4 073.(in Chinese))
[48] 谭福林，胡新丽，张玉明，等. 不同类型滑坡渐进破坏过程与稳定性研究[J]. 岩土力学，2016，37(增2)：597–606.(TAN Fulin，HU Xinli，ZHANG Yuming，et al. Study of progressive failure processes and stability of different types of landslides[J]. Rock and Soil Mechanics，2016，37(Supp.2)：597–606.(in Chinese))
[49] VALLEJO L E，MAWBY R. Porosity influence on the shear strength of granular material-clay mixtures[J]. Engineering Geology，2000，58(2)：125–136.
[50] 岳中琦. 岩土细观介质空间分布数字表述和相关力学数值分析的方法、应用和进展[J]. 岩石力学与工程学报，2006，25(5)：875–888.(YUE Zhongqi. Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of geomechanics，methods，applications and developments[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(5)：875–888.(in Chinese))
[51] 孙华飞，鞠杨，王晓斐，等. 土石混合体变形破坏及细观机制研究的进展[J]. 中国科学：技术科学，2014，44(2)：172–181.(SUN Huafei，JU Yang，WANG Xiaofei，et al. Review of the study on deformation，failure and the mesomechanisms of rock-soil mixture (RSM)[J]. Science in China Technology，2014，44(2)：172–181.(in Chinese))