海底泥流的流变试验及强度模型

doi:10.16285/j.rsm.2016.1227

›› 2018, Vol. 39 ›› Issue (9): 3195-3202.doi: 10.16285/j.rsm.2016.1227

海底泥流的流变试验及强度模型

范宁¹，年廷凯^{1, 2, 3}，赵维¹，鲁双⁴，宋雷²，印萍³

1. 大连理工大学海岸和近海工程国家重点实验室，辽宁大连 116024； 2. 中国矿业大学深部岩土力学与地下工程国家重点实验室，江苏徐州 221008； 3. 国土资源部海洋油气资源与环境地质重点实验室，山东青岛 266071； 4. 沈阳工学院能源与水利学院，辽宁抚顺 113122

收稿日期:2016-05-29 出版日期:2018-09-11 发布日期:2018-10-08
通讯作者: 年廷凯，男，1971年生，博士，教授，主要从事海洋岩土力学与能源岩土工程、工程地质灾害与地震岩土工程方面的教学与科研工作。E-mail: tknian@dlut.edu.cn E-mail:fanning@mail.dlut.edu.cn
作者简介:范宁，1990年生，男，博士研究生，主要从事海底滑坡过程模拟与灾害评价方面研究。
基金资助:
国家重点研发计划项目（No. 2016YFE0200100，No. 2018YFC0309200）；国家自然科学基金项目（No. 51879036，No. 51579032）；自然资源部海洋油气资源与环境地质重点实验室基金项目（No. MRE201304）

Rheological test and strength model of submarine mud flow

FAN Ning¹, NIAN Ting-kai^{1, 2, 3}, ZHAO Wei¹, LU Shuang⁴, SONG Lei², YIN Ping³

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China; 3. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao, Shandong 266071, China; 4. College of Energy and Water Resources, Shenyang Institute of Technology, Fushun, Liaoning, 113122, China

Received:2016-05-29 Online:2018-09-11 Published:2018-10-08
Supported by:
This work was supported by the National Key Research and Development Program of China (2016YFE0200100, 2018YFC0309200), the National Natural Science Foundation of China (51879036, 51579032) and the Open Research Funds from the Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology (MRE201304).

摘要/Abstract

摘要： 海底泥流是海底斜坡发生失稳滑动后，经复杂的水土交换作用演变成的稀式海底滑坡体，表现出土体和流体的双重特征，而现有的测试方法难以获得低剪切应变率下连续变化的强度值，不能很好地揭示其综合强度特性。利用新型全流动贯入仪和RST流变仪，对模拟海底泥流在不同剪切应变率下的流变和强度特性进行了多组试验研究，并基于试验结果分析了不排水剪切强度、屈服应力和表观黏度与含水率的相关性。基于剪切稀化理论，提出分阶段拟合模式来描述海底泥流从低剪切应变率到中高剪切应变率的流变关系；通过多种常规流变模式拟合结果的对比分析，显示出新流变模式的适用性和优势。考虑强度软化的影响，建立了全剪切应变率范围内海底泥流的不排水剪切强度模型，为海底泥流运动过程的数值模拟和灾害评价提供科学依据。

关键词: 海底泥流, 流变试验, 强度模型, 不排水剪切强度, 海底滑坡

Abstract: Submarine mud flow is a kind of dilute submarine landslide body which is evolved by complex soil and water exchange after the unstable sliding of submarine slope. It shows the dual characteristics of soil and fluid. However, it is difficult to obtain the continuous changing strength under low shear strain rate by the existing testing methods, and the comprehensive strength characteristics can not be well revealed. The rheological and strength properties of the simulated submarine mud flow at different shear strain rates are investigated by using new full-flow penetrometer and RST rheometer, and the relevance of the undrained shear strength, yield stress and apparent viscosity with moisture content are analyzed according to the experimental results. Based on the shear thinning theory, a piecewise fitting model is developed to describe the rheological relation of submarine mud flow from low to high shear strain rate. Then, the new rheological model shows a good applicability and advantages through the comparison with other conventional models. In addition, an undrained shear strength model of submarine mud flow is established by considering the effect of strength softening, which provides a scientific basis for the numerical simulation and disaster assessment of submarine mud flow movement.

Key words: submarine mud flow, rheology test, strength model, undrained shear strength, submarine landslide

中图分类号:

TU 411

范宁，年廷凯，赵维，鲁双，宋雷，印萍,. 海底泥流的流变试验及强度模型[J]. , 2018, 39(9): 3195-3202.

FAN Ning, NIAN Ting-kai, ZHAO Wei, LU Shuang, SONG Lei, YIN Ping,. Rheological test and strength model of submarine mud flow[J]. , 2018, 39(9): 3195-3202.

参考文献

相关文章 15

[1]	景路, 郭颂怡, 赵涛, . 基于流体动力学-离散单元耦合算法的海底滑坡动力学分析[J]. 岩土力学, 2019, 40(1): 388-394.
[2]	范宁, 年廷凯, 焦厚滨, 郑德凤, . 双椭流线型海底管线抵御滑坡冲击的减灾效果与降阻机制[J]. 岩土力学, 2019, 40(1): 413-420.
[3]	陈曦, 曾亚武, 孙翰卿, 任树林, 刘伟. 岩石节理峰值抗剪强度新模型[J]. 岩土力学, 2018, 39(S2): 123-130.
[4]	刘泉声, 罗慈友, 陈自由, 刘鹤, 桑昊旻, 万文恺, . 现场岩体三轴流变试验设备研制[J]. 岩土力学, 2018, 39(S2): 473-479.
[5]	付自国，乔登攀，郭忠林，李克钢，谢锦程，王佳信. 超细尾砂胶结充填体强度计算模型及应用[J]. , 2018, 39(9): 3147-3156.
[6]	孙永福，黄波林，宋玉鹏，赵永波，. 海底滑坡海啸的颗粒流耦合模型[J]. , 2018, 39(9): 3469-3476.
[7]	孔小昂，蔡国庆，赵成刚, . 黏土的张拉-剪切耦合强度研究[J]. , 2016, 37(8): 2285-2292.
[8]	赵娜，周密，何晓民. 掺砾黏土样的大型三轴流变特性试验研究[J]. , 2015, 36(S1): 423-429.
[9]	邓亚虹，李丽，慕焕东，王鹏，李飞霞，. 西安地区地裂缝带Q3原状黄土流变特性试验研究[J]. , 2015, 36(7): 1847-1855.
[10]	王延平，许强，郑光，郑海君,. 速度倒数法滑坡预警模型流变试验研究[J]. , 2015, 36(6): 1606-1614.
[11]	丁靖洋，周宏伟，陈琼，刘迪，刘建锋,. 盐岩流变损伤特性及本构模型研究[J]. , 2015, 36(3): 769-776.
[12]	王树英，阳军生，张学民. 低塑性粉土液化重固结后剪切强度研究[J]. , 2014, 35(7): 1849-1854.
[13]	王新刚，胡斌，连宝琴，祝凯，余宏明，. 西藏邦铺矿区花岗岩剪切流变本构研究及其开挖边坡长期稳定性分析[J]. , 2014, 35(12): 3496-3502.
[14]	周秋娟，陈晓平 . 典型基坑开挖卸荷路径下软土三轴流变特性研究[J]. , 2013, 34(5): 1299-1305.
[15]	王宇，李建林，邓华锋，王瑞红 . 软岩三轴卸荷流变力学特性及本构模型研究[J]. , 2012, 33(11): 3338-3344.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

海底泥流的流变试验及强度模型

Rheological test and strength model of submarine mud flow

PDF (Chinese)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0