风暴液化沉积的波动分选Monte-Carlo模拟
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摘要
风暴潮会引起近岸沉积物再沉积,重新沉积的沉积物具有上细下粗的正粒序排列特征。通过风暴液化沉积模拟试验,我们研究了液化沉积物波动分选的问题,即试验堆中不同粒径颗粒的成层问题。为了更好地了解颗粒成层问题,基于MonteCarlo方法,本文根据简化后的砂砾碰撞模型模拟了液化波动后砂砾的分层并给出了砂砾碰撞轨迹图及液化波动分布图。结果解释了两个关键问题:(1)液化沉积物在长时间的波动振荡过程后,相对粗的颗粒在液化沉积物层的下部聚集较多,上部较少,相对细的颗粒在液化沉积物层的上部聚集较多,下部较少;(2)作为标识的砂和砾石没有集中在样品柱的下部。
Under the action of storm tide, the sediment near shore would redeposit and form the normal graded sequence in re-deposited sediments. Through the storm liquefaction deposit test, this paper studied the issue of fluctuant sorting, i.e. the stratification of particles with different sizes. In order to get better understand the issue of stratification, based on the MonteCarlo method, this paper simulated the stratification of gravels after liquefaction according to the simplified gravel collision model and gave the collision trajectory of gravels and distribution diagram of gravels after liquefaction. The results explained two key issues:(1) After a long period of fluctuating oscillations of liquefied sediments, the gravel which relatively coarse were more concentrated in the lower part of liquefied sediment, while the relative finer gravel were more concentrated in the upper part of liquefied sediment.(2) The sands and gravels which were identified were not concentrated in the lower part of column sample.
Under the action of storm tide, the sediment near shore would redeposit and form the normal graded sequence in re-deposited sediments. Through the storm liquefaction deposit test, this paper studied the issue of fluctuant sorting, i.e. the stratification of particles with different sizes. In order to get better understand the issue of stratification, based on the MonteCarlo method, this paper simulated the stratification of gravels after liquefaction according to the simplified gravel collision model and gave the collision trajectory of gravels and distribution diagram of gravels after liquefaction. The results explained two key issues:(1) After a long period of fluctuating oscillations of liquefied sediments, the gravel which relatively coarse were more concentrated in the lower part of liquefied sediment, while the relative finer gravel were more concentrated in the upper part of liquefied sediment.(2) The sands and gravels which were identified were not concentrated in the lower part of column sample.
引文
Gao S,Cheng P,Wang Y,et al,2000.Characteristics of Suspended Sediment Concentrations over the Areas Adjacent to Changjiang River Estuary,the Summer of 1998.Marine Science Bulletin,(01):14-24
McCave I N,1978.Grain-size trends and transport along beaches:example from eastern England.Marine Geology,28(1-2):M43-M51.
Flemming B W,2007.The influence of grain-size analysis methods and sediment mixing on curve shapes and textural parameters:implications for sediment trend analysis.Sedimentary Geology,202(3):425-435.
Xu G,Liu Z,Sun Y,et al,2016.Experimental characterization of storm liquefaction deposits sequences.Marine Geology,382:191-199.
Zheng J W,Shan H X,Jia Y G,et al,2011.Field Tests and Observation of Wave-Loading Influence on Erodibility of Silty Sediments in Huanghe(Yellow River)Estuary,China.J.Coastal Res,27(4):706-717.
高抒,2009.沉积物粒径趋势分析:原理与应用条件.沉积学报,27(5):826-836.
郭永青,李小龙,熊学军,2015.潜标上浮过程中垂直运动数学建模与验证.海岸工程,2:002.
蒋东辉,高抒,2002.渤海海峡潮流底应力与沉积物分布的关系.沉积学报,20(4):663-667.
康崇禄,2014.蒙特卡罗方法理论和应用.北京:科学出版社.
李九发,李为华,应铭,等,2006.黄河三角洲飞雁滩沉积物颗粒度分布和粒度参数特征及水动力解释.海洋通报,25(3):38-44.
李艳,刘艳,李安春,等,2014.大连湾附近海域表层沉积物粒度特征及水动力环境指示.海洋通报,33(5):552-558.
刘阿成,2002.杭州湾口北部的表层沉积物粒度分布和动力沉积作用研究.海洋通报,(1):49-56.
刘红,何青,孟翊,等,2015.长江口表层沉积物分布特征及动力响应.地理学报,(1):83-94.
刘红军,刘莹,张民生,2009.波浪作用下黄河口粉土液化与振荡层形成试验研究.中国海洋大学学报(自然科学版),39(5):1013-1018.
刘涛,石学法,刘莹,2011.基于“动力组分”思想的沉积物粒径趋势模型.海洋学报,33(5):97-103.
刘世昊,丰爱平,李培英,等,2015.现代黄河三角洲地区晚更新世以来高分辨率沉积粒度特征及动力沉积环境演化.第四纪研究,35(2):291-306.
刘仲衡,吴锦秀,于永杰,等,1985.利用粒度资料浅析黄河三角洲潮坪沉积环境.山东海洋学院学报,15(1):159-168.
马菲,汪亚平,李炎,等,2008.地统计法支持的北部湾东部海域沉积物粒径趋势分析.地理学报,63(11):1207-1217.
裴鹿成,1982.散射方向随机抽样方法研究.核科学与工程,2(2):72-78.
乔淑卿,石学法,王国庆,等,2010.渤海底质沉积物粒度特征及输运趋势探讨.海洋学报,32(4):139-147.
孙永福,董立峰,宋玉鹏,2008.黄河水下三角洲粉质土扰动土层特征及成因探析.岩土力学,29(6):1494-1499.
王欣,许国辉,孙永福,等,2013.黄河水下三角洲液化海底的重新层化及其试验求证.海洋地质与第四纪地质,33(6):29-40
许国辉,孙永福,于月倩,等,2011.黄河水下三角洲浅表土体的风暴液化问题.海洋地质与第四纪地质,31(2):37-42.
杨少丽,沈渭铨,杨作升,1995.波浪作用下海底粉砂液化的机理分析.岩土工程学报,17(4):28-37.
张民生,刘红军,李晓东,等,2009.波浪作用下黄河口粉土液化与“铁板砂”形成机制的模拟试验研究.岩土力学,30(11):3 347-3351.
赵海波,郑楚光,陈胤密,2005.考虑颗粒碰撞的多重Monte Carlo算法.力学学报,37(5):564-572.
McCave I N,1978.Grain-size trends and transport along beaches:example from eastern England.Marine Geology,28(1-2):M43-M51.
Flemming B W,2007.The influence of grain-size analysis methods and sediment mixing on curve shapes and textural parameters:implications for sediment trend analysis.Sedimentary Geology,202(3):425-435.
Xu G,Liu Z,Sun Y,et al,2016.Experimental characterization of storm liquefaction deposits sequences.Marine Geology,382:191-199.
Zheng J W,Shan H X,Jia Y G,et al,2011.Field Tests and Observation of Wave-Loading Influence on Erodibility of Silty Sediments in Huanghe(Yellow River)Estuary,China.J.Coastal Res,27(4):706-717.
高抒,2009.沉积物粒径趋势分析:原理与应用条件.沉积学报,27(5):826-836.
郭永青,李小龙,熊学军,2015.潜标上浮过程中垂直运动数学建模与验证.海岸工程,2:002.
蒋东辉,高抒,2002.渤海海峡潮流底应力与沉积物分布的关系.沉积学报,20(4):663-667.
康崇禄,2014.蒙特卡罗方法理论和应用.北京:科学出版社.
李九发,李为华,应铭,等,2006.黄河三角洲飞雁滩沉积物颗粒度分布和粒度参数特征及水动力解释.海洋通报,25(3):38-44.
李艳,刘艳,李安春,等,2014.大连湾附近海域表层沉积物粒度特征及水动力环境指示.海洋通报,33(5):552-558.
刘阿成,2002.杭州湾口北部的表层沉积物粒度分布和动力沉积作用研究.海洋通报,(1):49-56.
刘红,何青,孟翊,等,2015.长江口表层沉积物分布特征及动力响应.地理学报,(1):83-94.
刘红军,刘莹,张民生,2009.波浪作用下黄河口粉土液化与振荡层形成试验研究.中国海洋大学学报(自然科学版),39(5):1013-1018.
刘涛,石学法,刘莹,2011.基于“动力组分”思想的沉积物粒径趋势模型.海洋学报,33(5):97-103.
刘世昊,丰爱平,李培英,等,2015.现代黄河三角洲地区晚更新世以来高分辨率沉积粒度特征及动力沉积环境演化.第四纪研究,35(2):291-306.
刘仲衡,吴锦秀,于永杰,等,1985.利用粒度资料浅析黄河三角洲潮坪沉积环境.山东海洋学院学报,15(1):159-168.
马菲,汪亚平,李炎,等,2008.地统计法支持的北部湾东部海域沉积物粒径趋势分析.地理学报,63(11):1207-1217.
裴鹿成,1982.散射方向随机抽样方法研究.核科学与工程,2(2):72-78.
乔淑卿,石学法,王国庆,等,2010.渤海底质沉积物粒度特征及输运趋势探讨.海洋学报,32(4):139-147.
孙永福,董立峰,宋玉鹏,2008.黄河水下三角洲粉质土扰动土层特征及成因探析.岩土力学,29(6):1494-1499.
王欣,许国辉,孙永福,等,2013.黄河水下三角洲液化海底的重新层化及其试验求证.海洋地质与第四纪地质,33(6):29-40
许国辉,孙永福,于月倩,等,2011.黄河水下三角洲浅表土体的风暴液化问题.海洋地质与第四纪地质,31(2):37-42.
杨少丽,沈渭铨,杨作升,1995.波浪作用下海底粉砂液化的机理分析.岩土工程学报,17(4):28-37.
张民生,刘红军,李晓东,等,2009.波浪作用下黄河口粉土液化与“铁板砂”形成机制的模拟试验研究.岩土力学,30(11):3 347-3351.
赵海波,郑楚光,陈胤密,2005.考虑颗粒碰撞的多重Monte Carlo算法.力学学报,37(5):564-572.