一种测试海底泥流强度的新型全流动贯入仪

上海交通大学学报（自然版） ›› 2017, Vol. 51 ›› Issue (4): 456-.

一种测试海底泥流强度的新型全流动贯入仪

范宁1，赵维1，年廷凯1, 2, 3，吴昊1，鲁双1

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. 青岛海洋地质研究所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;
3. 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

出版日期:2017-04-03 发布日期:2017-04-03
基金资助:
国家自然科学基金（51579032）,国土资源部海洋油气资源与环境地质重点实验室基金（MRE201304）,深部岩土力学与地下工程国家重点实验室基金（SKLGDUEK1307）资助项目

A New FullFlow Penetrometer for Strength Test of#br# Submarine Mud Flow

FAN Ning1,ZHAO Wei1,NIAN Tingkai1,2,3,WU Hao1,LU Shuang1

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology,
Dalian 116024, Liaoning, China; 2. Key Laboratory of Marine Hydrocarbon Resources and
Environmental Geology of Ministry of Land and Resources, Qingdao Research Institute of
Marine Geology, Qingdao 266071, Shandong, China; 3. State Key Laboratory for
GeoMechanics and Deep Underground Engineering, China University of Mining and
Technology，Xuzhou 221008, Jiangsu, China

Online:2017-04-03 Published:2017-04-03

摘要/Abstract

摘要：

针对当前缺乏低强度、高含水率的海底泥流强度的有效测试技术这一现状，基于全流动的测量机制，开发了一种新型全流动贯入仪；通过对仪器构造和测力元件的全面改进，实现不排水剪切强度、不同扰动程度下残余强度等参数的有效测量.通过在100g离心模型实验和1g常规重力实验条件下的不排水剪切强度测试，验证了新型全流动贯入仪的可靠性和稳定性；将开发的新型全流动贯入仪应用于模拟细粒土海底滑坡形成的海底泥流的循环强度测试中，取得了较好的效果.

关键词: 海底泥流, 全流动测试原理, 不排水剪切强度

Abstract:

A new fullflow penetrometer is proposed based on the fullflow testing mechanism, since there is a lack of proper strength test devices of submarine mud flow with low strength and high moisture content. The instrument structures and load measuring elements are significantly improved to effectively measure the undrained shear strength, residual strength with different disturbing degrees. Verifications are also carried out by comparisons of the strength values obtained from the new fullflow penetrometer and the routine one under the condition of 100g centrifuge model tests and 1g conventional gravity experiments, respectively. The results show that the working performance of new penetrometer is reliable and stable. Also, the new device is successfully used to measure the cycling strength of seafloor mud flow formed by fine grained simulationsoil submarine slide.

Key words: submarine mud flow, fullflow testing mechanism, undrained shear strength

中图分类号:

TU 411

范宁1，赵维1，年廷凯1, 2, 3，吴昊1，鲁双1. 一种测试海底泥流强度的新型全流动贯入仪[J]. 上海交通大学学报（自然版）, 2017, 51(4): 456-.

FAN Ning1,ZHAO Wei1,NIAN Tingkai1,2,3,WU Hao1,LU Shuang1. A New FullFlow Penetrometer for Strength Test of#br# Submarine Mud Flow[J]. Journal of Shanghai Jiaotong University, 2017, 51(4): 456-.

参考文献

［1］LOCAT J, LEE H J. Submarine landslides: Advances and challenges［J］. Canadian Geotechnical Journal, 2002, 39(1): 193212.
［2］HANCE J J. Submarine slope stability［D］. USA: Engineering Thesis of The University of Texas at Austin, 2003.
［3］李家钢, 修宗祥, 申宏, 等. 海底滑坡块体运动研究综述［J］. 海岸工程, 2012, 31(4): 6778.
LI Jiagang, XIU Zongxiang, SHEN Hong, et al. A review of the studies on submarine mass movement ［J］. Coastal Engineering, 2012, 31(4): 6778.
［4］王振红, 张昆, 朱泓, 等. 微型十字板在海洋软土中的应用［J］. 水利学报, 2015(Sup1): 205208.
WANG Zhenhong, ZHANG Kun, ZHU Hong, et al. Application of miniature vane in seabed soft soil ［J］. Journal of Hydraulic Engineering, 2015(Sup1): 205208.
［5］王冉冉. 全流动贯入仪的室内和离心模型试验研究［D］. 大连: 大连理工大学土木水利学院, 2013.
［6］郭绍曾, 刘润. 静力触探测试技术在海洋工程中的应用［J］. 岩土工程学报, 2015(Sup1): 207211.
GUO Shaozeng, LIU Run. Application of cone penetration test in offshore engineering ［J］. Chinese Journal of Geotechnical Engineering, 2015(Sup1): 207211.
［7］STEWART D P, RANDOLPH M F. A new site investigation tool for the centrifuge［C］∥Proceedings of the International Conference On Centrifuge Modelling, Centrifuge’91. Rotterdam: ［s.n.］, 1991: 531538.
［8］WHITE D U, GAUDIN C, BOYLAN N, et al. Interpretation of Tbar penetrometer tests at shallow embedment and in very soft soils［J］. Canadian Geotechnical Journal, 2010, 47(2): 218229.
［9］MARTIN C M, RANDOLPH M F. Upper bound analysis of lateral pile capacity in cohesive soil［J］. Géotechnique, 2006, 56(2): 141145.
［10］RANDOLPH M F, HOULSBY G T. The limiting pressure on a circular pile loaded laterally in cohesive soil［J］. Géotechnique, 1984, 34(4): 613623.
［11］李家钢, 王忠涛, 徐博, 等. 土工鼓式离心机研发及在海底滑坡研究中的应用［J］. 长江科学院院报, 2015, 32(1): 106111.
LI Jiagang, WANG Zhongtao, XU Bo, et al. Research and development of geotechnical drum centrifuge and its application to submarine landslides ［J］. Journal of Yangtze River Scientific Research Institute, 2015, 32(1): 106111.
［12］MOHRIG D, ELVERHI A, PARKER G. Experiments on the relative mobility of muddy subaqueous and subaerial debris flows and their capacity to remobilize antecedent deposits［J］. Marine Geology, 1999, 154(1/2/3/4): 117129.
［13］WHITE D J, CHEUK C Y. Modelling the dynamic embedment of seabed pipelines［J］. Géotechnique, 2011, 61(1): 3957.
［14］BOYLAN N, GAUDIN C, WHITE D J, et al. Geotechnical centrifuge modelling techniques for submarine slides［C］∥ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering, Honolulu. Hawaii USA: American Society of Mechanical Engineers, 2009: 6572.
［15］SAHDI F, GAUDIN C, WHITE D J. Strength properties of ultrasoft kaolin［J］. Canadian Geotechnical Journal, 2014, 51(4): 420431.
［16］RANDOLPH M R, HAN L, ZHOU H. In situ testing for design of pipeline and anchoring systems［C］∥Proceedings of the 6th International Offshore Site Investigation and Geotechnics Conference. London UK: Society of Underwater Technology, 2007: 177186.
［17］BOUKPETI N, WHITE D J, RANDOLPH M F, et al. Strength of finegrained soils at the solidfluid transition［J］. Géotechnique, 2012, 62(3): 213226.