黄河口埕岛海域海床的波致液化破坏研究

常方强; 贾永刚

黄河口埕岛海域海床的波致液化破坏研究

常方强^1,2,
贾永刚²

1.
华侨大学土木工程学院,福建厦门 361021;
2.
中国海洋大学环境科学与工程学院,山东青岛 266110

详细信息

中图分类号: TU470
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出版历程
- 收稿日期: 2010-04-01
- 修回日期: 2010-07-01
- 刊出日期: 2011-07-05

Study of the wave-induced seabed liquefaction failure of the Chengdao Sea at the Yellow River Estuary

CHANG Fang-qiang^1,2,
JIA Yong-gang²

1.
Faculty of Civil Engineering, Hua Qiao University, Xiamen Fujian 361021, China;
2.
Faculty of Environmental Science &Engineering, Ocean University of China, Qingdao Shandong 266110, China

摘要

摘要: 黄河口埕岛海域是胜利油田的重要产油区之一.其遭受地质灾害的主要原因是河系沉积物的液化.本文分析了该地区波致液化形成过程，建立了判别细粒土海床波致液化的理论计算模型，计算了埕岛海域不同钻孔处的液化深度，进一步得到液化流滑方向.通过研究主要得到了以下结论.（1）极端海况下，液化深度较大的区域分布在海域中部和东南区域，最深10 m深度处的软弱土体可出现液化；北部液化深度为4~8 m；西南大部分区域，液化深度最小，一般在3.0 m以内.（2）埕岛海域海床液化后，北部土体向北流滑；中部土体首先向东流滑，然后转为向东北流滑；东南部可能向东南向流滑，也可能残留.文中计算的海床液化深度和流滑方向可供石油工程设施设计和施工时参考.
- 黄河口 /
- 埕岛海域 /
- 波浪 /
- 液化
Abstract: The wave-induced seabed liquefaction is the main cause of gedegical disasters at the Chengdao Sea of the Yellow River Estuary, an oil production area. In this paper, a theoretical calculation model was established for assessing the seabed liquefaction, and calculating the liquefaction depth at different drills at the Chengdao Sea; further more, the direction of flow-slide was gotten. Through study some conclusions were gotten. (1) Under extreme sea conditions, the region with larger liquefaction depth lies at the central and southeastern of the Chengdao Sea, the weak soil layer up to 10 m can liquefy. The liquefaction depth can reach 4~8 m at the north, and liquefaction depth at the southwest is relatively little, 〖JP2〗within 3 m. (2) The flow-slide directions of the seabed after liquefaction are as follows, soil at north slide to north, soil at middle firstly slides to east and then to northeast, soil at the southeast may slide to southeast or be residual. The liquefaction depth and slide direction can be used for petroleum engineering design and construction reference.
- the Yellow River Estuary /
- the Chengdao Sea /
- wave /
- liquefaction

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参考文献(1)

[1]

［1］ PRIOR D B. Active slope failure, sediment collapse, and silt flows on the modern subqueous Huanghe (Yellow-River) delta ［J］. Geo-Marine Letters, 1986, 6(2): 85-95.

［2］杨少丽，沈渭铨，杨作升，等.波浪作用下海底粉砂液化的机理分析［J］.岩土工程学报，1995,17(4)：28-37.

YANG S L, SHEN W Q, YANG Z S, et al. The mechanism analysis of seafloor silt liquefaction under wave loads［J］. Chinese Journal of Geotechnical Engineering, 1995，17(4)：28-37.

［3］李广雪，庄克琳，姜玉池.黄河三角洲沉积体的工程不稳定性［J］，海洋地质与第四纪地质，2000,20（2）：21-26.

LI G X, ZHUANG K L, JIANG Y C. Engineering instability of the deposition bodies in the yellow river delta ［J］. Marine Geology & Quaternary Geology, 2000, 20（2）： 21-26.

［4］成国栋，薛春亭.黄河三角洲沉积地质学［M］.北京：地质出版社，1997：36-50.

CHENG G D, XUE C T. Sedimentary Geology of Yellow River Delta ［M］. Beijing: Geology Press, 1997： 36-50.

［5］常方强，贾永刚，常方伟.波浪作用下黄河口埕岛海域海床非均匀液化研究［J］.华东师范大学学报:自然科学版，2009(3)：83-89.

CHANG F Q, JIA Y G, CHANG F W. Study on seabed non-uniformity liquefaction under wave forces at Chengdao Sea of Yellow River estuary, China ［J］. Journal of East China Normal University: Natural Science, 2009(3)：83-89.

［6］赵维霞.埕岛海区地质灾害及基于GEO-SLOPE的滑坡定量分析［D］.山东青岛：中国海洋大学，2005.

ZHAO W X. The study of geologic hazards and the quantitative analysis of submarine landslides based on the Geo-Slope software in Chengdao area ［D］. Qingdao Shandong: Ocean University of China, 2005.

［7］杨作升，陈卫民，陈彰榕，等.黄河口水下滑坡体系［J］. 海洋与湖沼，1994，25(6)：573-581.

YANG Z S, CHEN W M, CHEN Z G, et al. Subaqueous landslide system in the Huanghe River (Yellow River) Delta［J］．Oceanologia et Limnologia Siniea, 1994, 25(6): 573-581.

［8］常方强，贾永刚，孟祥梅，等.埕岛海域波浪引起不同区域土体的液化程度［J］. 海洋地质与第四纪，2008，28(4)：37-43.

CHANG F Q, JIA Y G, MENG X M, et al. The degree of liquefaction of seabed induced by storm wave in chengdao sea area［J］. Marine Geology & Quaternary Geology, 2008, 28(4): 37-43.

［9］ KENJI ISHIHARA, AKIRA YAMAZAKI. Wave-induced liquefaction in seabed deposits of sand ［C］. Seabed Mechanics, 1984: 139-148.

［10］常方强.波浪作用下黄河口海底滑坡研究［D］.山东青岛：中国海洋大学，2009：34.

CHANG F Q. Study on mechanism of wave-induced submarine landslide at the Yellow River Estuary, China ［D］. Qingdao Shandong: Ocean University of China, 2009: 34.

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