碎屑堆积体基岩-覆土接触面剪切实验研究

doi:10.11885/j.issn.1674-5086.2023.06.13.02

西南石油大学学报(自然科学版) ›› 2025, Vol. 47 ›› Issue (5): 151-165.DOI: 10.11885/j.issn.1674-5086.2023.06.13.02

碎屑堆积体基岩-覆土接触面剪切实验研究

邱恩喜^1,2,3, 赵剑杰¹, 万旭升¹, 王知深¹, 刘君¹

1. 西南石油大学土木建筑与测绘学院, 四川成都 610500;
2. 地质灾害防治与地质环境保护国家重点实验室, 四川成都 610059;
3. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室, 湖北武汉 430071

收稿日期:2023-06-13 发布日期:2025-11-04
通讯作者: 王知深，E-mail:ashenlittle@hotmail.com
作者简介:邱恩喜，1981年生，男，汉族，四川成都人，副教授，博士，主要从事岩土工程方面的研究。E-mail:enxiqiu@163.com
赵剑杰，1995年生，男，汉族，四川泸州人，硕士，主要从事岩土工程方面的研究。E-mail:1245186559@qq.com
万旭升，1971年生，男，汉族，四川成都人，教授，博士后，主要从事盐胀机理及寒区工程的研究。E-mail: wanxs@swpu.edu.cn
王知深，1987年生，男，汉族，四川成都人，讲师，博士，主要从事岩土工程的数值模拟与室内实验的研究。E-mail: ashenlittle@hotmail.com
刘君，1988年生，男，汉族，四川成都人，讲师，博士，主要从事桥梁工程、岩土工程的研究。E-mail:liujun_sichuan@126.com
基金资助:
四川省科技计划（2025ZNSFSC0331）；地质灾害防治与地质环境保护国家重点实验室开放基金（SKLGP2021K017）；四川高速公路建设开发集团有限公司科技项目（2022 cg 1y 3）；西藏自治区科技计划重点研发（XZ202402ZY0010）

An Experimental Study of Shear at the Bedrock-cover Contact Surface of a Clastic Accumulation

QIU Enxi^1,2,3, ZHAO Jianjie¹, WAN Xusheng¹, WANG Zhishen¹, LIU Jun¹

1. School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu, Sichuan 610059, China;
3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China

Received:2023-06-13 Published:2025-11-04

摘要/Abstract

摘要： 藏东南地区地层岩性复杂，碎屑堆积体分布广泛，基覆界面多为此类堆积体边坡的潜在滑移面，其剪切力学特性是控制边坡稳定性的关键因素。为探究堆积体基覆界面的力学特性，开展了4因素[含石率、节理粗糙度系数（JRC）、含水量、基岩软硬程度]3水平的室内正交直剪实验。研究结果表明，土石混合体-基岩界面的剪应力-剪切位移曲线形态以塑性应变为主，但在高垂直压力下，JRC值为18.7的实验曲线存在应变软化现象，且应变软化阶段长短与含石率大小呈正相关；此外，剪应力-剪切位移曲线易出现“应力跳跃”现象，这主要与块石和基岩嵌固咬合、块石和基岩的破碎、块石在基岩面的位置调整有关；对于土石混合体-基岩界面抗剪强度，基岩软硬程度和含水量的影响程度最为显著，影响黏聚力和内摩擦角的关键因素是基岩软硬程度和含水量，而影响剪胀性的关键因素为JRC和基岩软硬程度，影响剪缩性的关键因素为含石率和含水量。

关键词: 藏东南, 碎屑堆积体, 基覆界面, 节理粗糙度系数, 剪切力学特性, 正交实验法

Abstract: In the southeast Tibetan region, the stratigraphic lithology is complex, the clastic accumulation is widely distributed, and the base cover interface is mostly the potential slip surface of the slope of such accumulation, whose shear mechanical properties are the key factor to control the stability of the slope. To investigate the mechanical properties of the base cover interface of the accumulation, a 3-level indoor orthogonal direct shear experiment with 4 factors (rock content, joint roughness coefficient (JRC), water content, and bedrock softness) was conducted. The results show that the shear stress-shear displacement curve pattern of the soil-stone mixture-bedrock interface is dominated by plastic strain, but there is strain softening in the test curve with a JRC value of 18.7 at high vertical pressure, and the length of the strain softening phase is positively correlated with the size of the rock content. In addition, the shear stress-shear displacement curve is prone to the phenomenon of“stress jump”, which is mainly related to the block and bedrock embedded occlusion, block and bedrock fragmentation, block in the bedrock surface position adjustment; for the shear strength of soil-stone mixture-bedrock interface, the degree of bedrock softness and water content have the most significant degree of influence. The key factors affecting cohesion and internal friction angle are the degree of bedrock softness and water content, while the key factors affecting shear expansion are JRC and bedrock softness and hardness, and the key factors affecting shear contraction are rock content and water content.

Key words: southeast Tibet, clastic accumulation, bedrock-cover interface, JRC, shear mechanical properties, orthogonal experimental method

中图分类号:

邱恩喜, 赵剑杰, 万旭升, 王知深, 刘君. 碎屑堆积体基岩-覆土接触面剪切实验研究[J]. 西南石油大学学报(自然科学版), 2025, 47(5): 151-165.

QIU Enxi, ZHAO Jianjie, WAN Xusheng, WANG Zhishen, LIU Jun. An Experimental Study of Shear at the Bedrock-cover Contact Surface of a Clastic Accumulation[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(5): 151-165.

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参考文献

[1] 徐文杰,胡瑞林. 土石混合体概念、分类及意义[J]. 水文地质工程地质, 2009, 36(4):50-56, 70. doi:10.3969/j.issn.1000-3665.2009.04.012 XU Wenjie, HU Ruilin. Conception, classification and significations of soil-rock mixture[J]. Hydrogeology and Engineering Geology, 2009, 36(4):50-56, 70. doi:10.3969/j.issn.1000-3665.2009.04.012
[2] PHIEN W N, SHRESTHA U B, RANTUCCI G. Effect of infill thickness on shear behavior of rock joints[C]. Wuhan:International Symposium on Rock Joints, 1990.
[3] TOLEDE P E D, FREITAS M H D C, GCOL C. Laboratory testing and parameters controlling the shear strength of filled rock joints[J]. Géotechnique, 1993, 43(1):1-19. doi:10.1680/geot.1993.43.1.1
[4] DENG Desheng, SIMON R, AUBERTIN M. Modelling shear and normal behaviour of filled rock joints[C]. Atlanta:Proceedings of GeoCongress, 2006. doi:10.1061/40803(187)159
[5] INDRARATNA B, WELIDENIYA H S, BROWN E T. A shear strength model for idealised infilled joints under constant normal stiffness[J]. Géotechnique, 2019, 55(3):215-226. doi:10.1680/geot.2005.55.3.215
[6] INDRARATNA B, PREMADASA W, BROWN E T, et al. Shear strength of rock joints influenced by compacted infill[J]. International Journal of Rock Mechanics and Mining Sciences, 2014, 70:296-307. doi:10.1016/j.ijrmms.2014.04.019
[7] ZHAO Yanlin, ZHANG Lianyang, WANG Weijun, et al. Experimental study on shear behavior and a revised shear strength model for infilled rock joints[J]. International Journal of Geomechanics, 2020, 20(9):04020141. doi:10.1061/(ASCE)GM.1943-5622.0001781
[8] CHENG T C, CHERN S G, WU S R, et al. Effect of infill moisture content and thickness on shear behavior of planar and rough rock joints[J]. Joint, 2016, 47(3):130-135.
[9] 杨忠平,李进,蒋源文,等. 含石率对土石混合体-基岩界面剪切力学特性的影响[J]. 岩土工程学报, 2021, 43(8):1443-1452. doi:10.11779/CJGE202108009 YANG Zhongping, LI Jin, JIANG Yuanwen, et al. Influence of stone content on shear mechanical properties of soil-rock mixture-bedrock interface[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(8):1443-1452. doi:10.11779/CJGE202108009
[10] 徐鼎平,夏庭,崔玉军,等. 白鹤滩水电站层间错动带的剪切特性[J]. 岩石力学与工程学报, 2012, 31(S1):2692-2703. doi:10.3969/j.issn.1000-6915.2012.z1.013 XU Dingping, XIA Ting, CUI Yujun, et al. Shear behaviors of interlayer staggered zone at Baihetan hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(S1):2692-2703. doi:10.3969/j.issn.1000- 6915.2012.z1.013
[11] 艾英钵,徐阳阳,邱维邦. 土石混合料与岩石接触面强度特性模拟试验研究[J]. 工程地质学报, 2020, 28(3):450-458. doi:10.13544/j.cnki.jeg.2019-532 AI Yingbo, XU Yangyang, QIU Weibang. Experimental study of strength behavior of gravel and rock interface[J]. Journal of Engineering Geology, 2020, 28(3):450-458. doi:10.13544/j.cnki.jeg.2019-532
[12] 周辉,孟凡震,张传庆,等. 结构面剪切破坏特性及其在滑移型岩爆研究中的应用[J]. 岩石力学与工程学报, 2015, 34(9):1729-1738. doi:10.13722/j.cnki.jrme.2014.0337 ZHOU Hui, MENG Fanzhen, ZHANG Chuanqing, et al. Characteristics of shear failure of structural plane and slip rockburst[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(9):1729-1738. doi:10.13722/j.cnki.jrme.2014.0337
[13] 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(S1):2907-2914. doi:10.13722/j.cnki.jrme.2015.0184 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 Mechanics and Engineering, 2016, 35(S1):2907-2914. doi:10.13722/j.cnki.jrme.2015.0184
[14] 陈红旗,黄润秋,林峰. 大型堆积体边坡的空间工程效应研究[J]. 岩土工程学报, 2005, 27(3):323-328. doi:10.3321/j.issn:1000-4548.2005.03.016 CHEN Hongqi, HUANG Runqiu, LIN Feng. Study on the spatial engineering effect of large accumulation slope[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(3):323-328. doi:10.3321/j.issn:1000-4548.2005.03.016
[15] 中华人民共和国国家发展和改革委员会. 水电水利工程粗粒土试验规程:DL/T 53562006[S]. 北京:中国电力出版社, 2006. National Development and Reform Commission of the People's Republic of China. Test regulations for coarsegrained soil in hydropower and water conservancy projects:DL/T 53562006[S]. Beijing:China Electric Power Press, 2006.
[16] 邱恩喜,何巧玲,孙希望,等. 冻融循环作用下西藏东南冰碛土剪切力学特性试验研究[J]. 防灾减灾工程学报, 2022, 42(6):1267-1279. doi:10.13409/j.cnki.jdpme.20220125001 QIU Enxi, HE Qiaoling, SUN Xiwang, et al. Experimental study on shear mechanical properties of moraine soil in Southeast Tibet under freeze-thaw cycle[J]. Journal of Disaster Prevention and Mitigation Engineering, 2022, 42(6):1267-1279. doi:10.13409/j.cnki.jdpme.20220125001
[17] WATABE Y, LEROUEIL S, BIHAN J P L. Influence of compaction conditions on pore-size distribution and saturated hydraulic conductivity of a glacial till[J]. Canadian Geotechnical Journal, 2000, 37(6), 1184-1194. doi:10.1139/t00-053
[18] REDDY K R, ALA P R. Electrokinetic remediation of metal-contaminated field soil[J]. Separation Science and Technology, 2005, 40(8):1701-1720. doi:10.1081/SS- 200059606
[19] RONAYNE M J, HOUGHTON T B, STEDNICK J D. Field characterization of hydraulic conductivity in a heterogeneous alpine glacial till[J]. Journal of Hydrology, 2012, 458-459:103-109. doi:10.1016/j.jhydrol.2012.06.036
[20] CAO Laifa, PEAKER S M, AHMAD S. Engineering characteristic of glacial tills in GTA[C]. Qubec:68th Canadian Geotechnical Conference, 2015.
[21] TRANDAFIR A C, ERTUGRUL O L, GIRAUD R E,et al. Geomechanics of a snowmelt-induced slope failure in glacial till[J]. Environmental Earth Sciences, 2014, 73:3709-3716. doi:10.1007/s12665-014-3658-y
[22] ZUMSTEG R, LANGMAACK L. Mechanized tunneling in soft soils:Choice of excavation mode and application of soil-conditioning additives in glacial deposits[J]. Engineering, 2017, 3(6):863-870. doi:10.1016/j.eng.2017.11.006
[23] PHILLIPS E R, EVANS D J A, MEER J J M, et al. Microscale evidence of liquefaction and its potential triggers during soft-bed deformation within subglacial traction tills[J]. Quaternary Science Reviews, 2018, 181:123-143. doi:10.1016/j.quascirev.2017.12.003
[24] LIU Tingfa, USHEV E R, JARDINE R J. Anisotropic stiffness and shear strength characteristics of a stiff glacial till[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2020, 146(12):10. doi:10.1061/(AS CE)GT.1943-5606.0002387
[25] 李维树,丁秀丽,邬爱清,等. 蓄水对三峡库区土石混合体直剪强度参数的弱化程度研究[J]. 岩土力学, 2007, 28(7):1338-1342. doi:10.16285/j.rsm.2007.07.010 LI Weishu, DING Xiuli, WU Aiqing, et al. Shear strength degeneration of soil and rock mixture in Three Gorges Reservoir bank slopes under influence of impounding[J]. Rock and Soil Mechanics, 2007, 28(7):1338-1342. doi:10.16285/j.rsm.2007.07.010
[26] 薛亚东,岳磊,李硕标. 含水率对土石混合体力学特性影响的试验研究[J]. 工程地质学报, 2015, 23(1):21-29. doi:10.13544/j.cnki.jeg.2015.01.004 XUE Yadong, YUE Lei, LI Shoubiao. Experimental study on mechanical properties of soil-rock mixture containing water[J]. Journal of Engineering Geology, 2015, 23(1):21-29. doi:10.13544/j.cnki.jeg.2015.01.004
[27] 叶咸,郭彪,潘俊良,等. 土工试验中制备最优含水率试样的方法研究[J]. 公路交通科技(应用技术版), 2016, 12(2):72-74. YE Xian, GUO Biao, PAN Junliang, et al. Study on the method of preparing optimal water content sample in geotechnical test[J]. Journal of Highway and Transportation Science and Technology (Applied Technology Edition), 2016, 12(2):72-74.
[28] 常士骠. 工程地质手册[M]. 北京:中国建筑工业出版社, 1990. CHANG Shibiao. Engineering geology manual[M]. Beijing:China Architecture & Building Press, 1990.
[29] 陈清泉. 西藏自治区区域地质志[R]. 拉萨:西藏自治区地矿局, 1993. CHEN Qingquan. Regional geological records of Tibet Autonomous Region[R]. Lasa:Bureau of Geology and Mineral Resources of Tibet Autonomous Region, 1993.
[30] 杨松,张慧乐,孙颖霞,等. 岩溶区基岩模拟材料的研制及应用[J]. 地下空间与工程学报, 2012, 8(6):1159-1167. YANG Song, ZHANG Huile, SUN Yingxia, et al. Research and development of bedrock similar material in karst area[J]. Chinese Journal of Underground Space and Engineering, 2012, 8(6):1159-1167.
[31] 张建新,吴东云. 桩端阻力与桩侧阻力相互作用研究[J]. 岩土力学, 2008, 29(2):541544. doi:10.16285/j.rsm.2008.02.026 ZHANG Jianxin, WU Dongyun. Research on interaction between resistance at pile and lateral resistance of pile[J]. Rock and Soil Mechanics, 2008, 29(2):541-544. doi:10.16285/j.rsm.2008.02.026
[32] 吴震,张建新. 嵌岩桩破坏模式的试验研究[J]. 建筑施工, 2005, 27(7):8-10. doi:10.3969/j.issn.1004- 1001.2005.07.003 WU Zhen, ZHANG Jianxin. Experimental study on failure mode of rock-embedded pile[J]. Building Construction, 2005, 27(7):8-10. doi:10.3969/j.issn.1004- 1001.2005.07.003
[33] 刘云云,陈竹昌. 扭矩作用下嵌岩桩桩顶内力分布的模型试验[J]. 岩土力学, 2000, 21(2):119-122. doi:10.16285/j.rsm.2000.02.005 LIU Yunyun, CHEN Zhuchang. Model simulation of internal load distribution in rock-socketed piles subject to torsion[J]. Rock and Soil Mechanics, 2000, 21(2):119-122. doi:10.16285/j.rsm.2000.02.005
[34] 赵明生,康强,王园园. 石灰岩相似材料力学性能试验研究[J]. 矿业研究与开发, 2022, 42(4):85-88. doi:10.13827/j.cnki.kyyk.2022.04.025 ZHAO Mingsheng, KANG Qiang, WANG Yuanyuan. Experimental study on mechanical properties of limestone similar materials[J]. Mining Research and Development, 2022, 42(4):85-88. doi:10.13827/j.cnki.kyyk.2022.04.025
[35] BARTON N. A relationship between joint roughness and joint shear strength[C]. Nancy:Proc. Int. Symp. On Rock Mech., 1971.
[36] BARTON N, CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics, 1977, 10(1):1-54. doi:10.1007/BF01261801
[37] 唐建一,徐东升,刘华北. 含石量对土石混合体剪切特性的影响[J]. 岩土力学, 2018, 39(1):93102. doi:10.16285/j.rsm.2017.1527 TANG Jianyi, XU Dongsheng, LIU Huabei. Effect of gravel content on shear behavior of sand-gravel mixture[J]. Rock and Soil Mechanics, 2018, 39(1):93-102. doi:10.16285/j.rsm.2017.1527
[38] 江强强,徐杨青,王浩. 不同含石量条件下土石混合体剪切变形特征的试验研究[J]. 工程地质学, 2020, 28(5):951-958. doi:10.13544/j.cnki.jeg.2020-346 JIANG Qiangqiang, XU Yangqing, WANG Hao. Research on shear deformation characteristics of soilrock mixtures under different stone contents[J]. Journal of Engineering Geology, 2020, 28(5):951-958. doi:10.13544/j.cnki.jeg.2020-346
[39] ZHONG Zhou, LI Fan, YANG Hao, et al. Orthogonal experimental study of soil-rock mixtures under the freeze-thaw cycle environment[J]. International Journal of Pavement Engineering, 2021, 22(11):1376-1388. doi:10.1080/10298436.2019.1686634
[40] 刘飞禹,梁崇旭,王军,等. 不同含水率下花岗岩残积土循环剪切特性研究[J]. 岩石力学与工程学报, 2023, 42(8):2048-2057. doi:10.13722/j.cnki.jrme.2022.0121 LIU Feiyu, LIANG Chongxu, WANG Jun, et al. Study on cyclic shear characteristics of granite residual soil under different water contents[J]. Chinese Journal of Rock Mechanics and Engineering, 2023, 42(8):2048-2057. doi:10.13722/j.cnki.jrme.2022.0121

碎屑堆积体基岩-覆土接触面剪切实验研究

An Experimental Study of Shear at the Bedrock-cover Contact Surface of a Clastic Accumulation

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