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Analysis of the Wenchuan Ms8.0 Earthquake's Co-seismic Stress and Displacement Change by Using the Finite Element Method

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Acta Geologica Sinica(English Edition) 2013年第4期87卷 1120-1128页

作者： SUN Dongsheng WANG Lianjie WANG Hongcai MA Yinsheng zhou chunjing CUI Junwen Key Laboratory of Neotectonic Movement and Geohazard Ministry of Land and Resources Institute of Geomechanics Chinese academy of Geological Sciences Institute of Geology Chinese academy of Geological Sciences

The variation of in situ stress before and after earthquakes is an issue studied by geologists. In this paper, on the basis of the fault slip dislocation model of Wenchuan Ms8.0 earthquake, the changes of co-seismic displacement and the distribution functions of stress tensor around the Longmen Shan fault zone are calculated. The results show that the co-seismic maximum surface displacement is 4.9 m in the horizontal direction and 6.5 m in the vertical direction, which is almost consistent with the on-site survey and GPS observations. The co-seismic maximum horizontal stress in the hanging wall and footwall decreased sharply as the distance from the Longmen Shan fault zone increased. However, the vertical stress and minimum horizontal stress increased in the footwall and in some areas of the hanging wall. The study of the co-seismic displacement and stress was mainly focused on the long and narrow region along the Longmen Shan fault zone, which coincides with the distribution of the earthquake aftershocks. Therefore, the co-seismic stress only affects the aftershocks, and does not affect distant faults and seismic activities. The results are almost consistent with in situ stress measurements at the two sites before and after Wenchuan Ms8.0 earthquake. Along the fault plane, the co-seismic shear stress in the dip direction is larger than that in the strike direction, which indicates that the faulting mechanism of the Longmen Shan fault zone is a dominant thrust with minor strike-slipping. The results can be used as a reference value for future studies of earthquake mechanisms.

关键词： Wenchuan Ms8.0 earthquake co-seismic stress field co-seismic displacement field finiteelement method in sitn stress measurement

A New ^(40)Ar-^(39)Ar Dating Result of Volcanic Activities in the Mid-Late Miocene in the Liuhe Region, Nanjing City

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Acta Geologica Sinica(English Edition) 2018年第5期92卷 2041-2042页

作者： WU Kungang WU Zhonghai ZHAO Xitao zhou chunjing YANG Xiaodong GAO Kun Institute of Geomechanics Chinese Academy of Geological Sciences Key Laboratory of Neotectonic Movement and Geohazard Ministry of Land and Resources Institute of Geology and Geophysics Chinese Academy of Sciences College of Earth Science and Resources China University of Geosciences

Objective The timing of the Neogene basalts in the Liuhe area of Nanjing has always been a research *** development of＂Investigation on Active Structure and Crust Stability of the Yangtze River Economic Belt＂project... 详细信息

关键词： A New Ar

Implications of micro-compositions of garnet and biotite from high-grade meta-pelites

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Progress in Natural Science:Materials International 2006年第2期16卷 209-214页

作者： zhou Xiwen, WEI chunjing, and ZHANG Shangkun ( Institute of Geology, CAGS, Beijing 100037, China School of Earth and Space Sciences, Peking University, Beijing 100871, China China University of Geo-Sciences, Beijing 100083, China) Institute of Geology GAGS Beijing 100037 China School of Earth and Space Sciences Peking University Beijing 100871 China China University of Geo-Sciences Beijing 100083 China

Based on detailed studies on the compositional zoning of garnet and biotite in pelitic rocks from the Jingshan group of granulite facies in north Jiaodong, P-T pseudosections with isopleths of Fe/(Fe + Mg) in garnet and biotite were calculated in the KF-MASH system for two representative rocks of sillimanite-garnet-cordierite-biotite gneiss ( Vbi/ Vg>1 ) and sillimanite-garnet gneiss (Vbi/ Vg 1 can nearly preserve their peak compositions, and biotites in garnet-rich rocks with Vbi/Vg<0. 2 cannot preserve their peak compositions due to the influence of grain-boundary fluid.

关键词： high-grade meta-pelites THERMOCALC P-T pseudosection peak compositions of garnet and biotite.

The Impact Heme Oxygenase -1 on the Regulating Factors of Hepatoma Cells＇ Cell Cycle

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International Journal of Technology Management 2014年第9期 60-62页

作者： Han GAO Tao zhou Shuyan LI chunjing ZHANG Hongyue CHEN Biochemistry and Molecular Biology Teaching and Research Section Qiqihar Medical College Heilongjiang Province China

It aims to analyze the impact heme oxygenase -1 （heme oxygenase 1, HO-1） on regulating factors of human hepatoma cell HepG2＇s cell cycle, through constructing recombinant vector of pcDNA3.1 containing wild-type and mutant HO-1 gene （＋）-wtHO-1 and pcDNA3.1 （＋）-mHO-1G143H. By using the method of liposome-mediated, the recombinant vector was transfected hepatoma cell line HepG2. And the transfected one with empty vector was treated as a control group. By the selection of G418, stable expression of wild-type and mutant HO-1 in HepG2 liver cancer cell lines were established. Use the blot of semi-quantitative RT-PCR and Western to test transfected cell lines expressing levels of riO-1 mRNA and protein. As HO-1 expression in stably transfected cell lines altered, we use Western blot to test transfected cell lines P21, P27 protein expression levels. As result shows, we got 1 HO-over-expression of wild-type and mutant in HepG2 cells; wild- type and mutant＇s over expression of HO-1 can induce the expression of tumor suppressor genes p21 and *** got the conclusion that HO-l＇s over-expression of tumor suppressor genes p21 and p27 is unrelated to the expression of heme decomposition products. HO-1 may regulate the expression of p21 and p27 through other mechanisms.

关键词： Heme oxygenase-1 liver cells cell cycle regulation factors

Late Cenozoic Normal Faulting on the Western Side of Wenquan Graben, Central Qianghai-Xizang(Tibet) Plateau

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Earthquake Research in China 2005年第2期19卷 152-169页

作者： Wu Zhonghai Ye Peisheng Liu Qisheng Wu Zhenhan Hu Daogong Zhao Xitao zhou chunjing Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

A near NS-strike east-dipping normal fault is developed on the western side of Wenquan graben in the central Qinghal-Xizang（Tibet） Plateau. It is the western marginal fault of the graben and has been intensely active. It is a product of the near EW extension and deformation of the central northern Qinghal-Xizang（Tibet） Plateau since the late Cenozoic under the effect of the collision of the India and Eurasia plates. Since the late Cenozoic, the maximum vertical displacement on the fault was greater than 2. ! km, and the dislocated Mesozoic fold stratum reveals a maximum accumulative throw of 6.0 ± 2.2km. Quaternary faulting took place many times along the fault, creating multi-set piedmont fault facets and multi-level fault *** to the height of fault scarps that result from the vertical offset of the late Quaternary strata and geomorphic provinces, the maximum slip rate of the fault is estimated to have been less than 1.2mm/a since the late Quaternary, averaging 0.45mm/a. The trenching across the fault reveals that at least 3 paleoearthquakes of varied magnitudes have occurred since the late Epipleistocene. In view of the characteristics of Cenozoic faulting, it is concluded that the fault will act as a dominant seismogenic fault for earthquakes of M6.0 to M7.0 that are most likely to occur in the future.

关键词： Wenquan graben East-west extension Normal fault Paleoearthquake Qinghai-Xizang (Tibet) Plateau

具有随机型和区间型干扰因素的产品健壮设计研究

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中国机械工程 2007年第5期18卷 505-509页

作者：刘春涛林志航周春景西安交通大学机械制造系统工程国家重点实验室西安710049

针对随机型和区间型干扰因素共同作用条件下的产品健壮设计问题,在同时考虑设计目标健壮性和设计约束可行健壮性的基础上,提出了健壮设计的分位数型设计准则;在该设计准则的基础上,建立了产品健壮设计的分位数优化模型,保证了所设计产... 详细信息

针对随机型和区间型干扰因素共同作用条件下的产品健壮设计问题,在同时考虑设计目标健壮性和设计约束可行健壮性的基础上,提出了健壮设计的分位数型设计准则;在该设计准则的基础上,建立了产品健壮设计的分位数优化模型,保证了所设计产品的抗干扰能力和可靠度。通过汽车离合器膜片弹簧的健壮设计实例,验证了该方法的有效性和实用性。

关键词：健壮设计随机型干扰因素区间型干扰因素分位数

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顾客需求驱动的产品配置优化

西安交通大学学报 2007年第3期41卷 339-343页

作者：周春景林志航刘春涛西安交通大学制造系统工程国家重点实验室西安710049

提出一种顾客需求驱动的产品配置优化方法.该方法针对现有产品族模型用于配置设计中存在的问题,构造了支持产品配置的设计空间,并运用联合分析方法将顾客期望分解为各产品特性的质量效用.在此基础上,同时考虑大批量定制产品的质量效用... 详细信息

提出一种顾客需求驱动的产品配置优化方法.该方法针对现有产品族模型用于配置设计中存在的问题,构造了支持产品配置的设计空间,并运用联合分析方法将顾客期望分解为各产品特性的质量效用.在此基础上,同时考虑大批量定制产品的质量效用和成本,以“效费比”最大为目标,建立了产品优化配置数学模型,并采用遗传算法对其进行求解,从而达到了顾客满意度和成本之间的平衡——最优配置方案.以笔记本电脑的优化配置为例,证明了所提出的优化配置方法可为获取顾客满意的最优配置方案提供行之有效的途径.

关键词：配置优化大批量定制联合分析遗传算法

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基于系统动力学的农产品供应链韧性演化分析

科技和产业 2024年第12期24卷 243-248页

作者：瞿英周春婧河北科技大学经济管理学院石家庄050018

农产品供应链具有多环节、多参与主体、外部环境复杂等特点,面对外部冲击时数字化手段具有一定作用。从系统角度出发依据韧性内涵提取相关影响因素,并与数字化手段关联,运用系统动力学构建因素间动态关联的农产品供应链韧性影响因素模... 详细信息

农产品供应链具有多环节、多参与主体、外部环境复杂等特点,面对外部冲击时数字化手段具有一定作用。从系统角度出发依据韧性内涵提取相关影响因素,并与数字化手段关联,运用系统动力学构建因素间动态关联的农产品供应链韧性影响因素模型。结果表明,农产品供应链韧性随时间推移呈递增趋势,相比单独进行设施建设,关注经济政策发展与组织管理建设的韧性优化方案效果更好,全生命周期下农产品供应链韧性的提升需全局综合调控。

关键词：农产品供应链韧性系统动力学数字化视角

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昆仑山南部西大滩盆北花岗岩的年龄与热历史

地质学报 2005年第5期79卷 628-635页

作者：吴珍汉胡道功宋彪周春景中国地质科学院地质力学研究所北京100081 北京离子探针中心

对南昆仑缝合带中段西大滩盆北花岗岩,应用不同的年代学方法,测定岩浆结晶时代和构造热事件年龄,分析构造地貌演化过程。应用离子探针方法,测出西大滩盆北花岗岩的锆石U-Pb同位素年龄为196.4- 212.1 Ma,平均年龄204.1±2.6 Ma,代表岩浆... 详细信息

对南昆仑缝合带中段西大滩盆北花岗岩,应用不同的年代学方法,测定岩浆结晶时代和构造热事件年龄,分析构造地貌演化过程。应用离子探针方法,测出西大滩盆北花岗岩的锆石U-Pb同位素年龄为196.4- 212.1 Ma,平均年龄204.1±2.6 Ma,代表岩浆侵位结晶时代。西大滩盆北花岗岩的黑云母K-Ar和Ar-Ar同位素年龄为134.47-145.3 Ma,指示晚期韧性剪切变形时代。应用矿物对热年代学方法,揭示出204.1-134.47 Ma、57. 67-26.0 Ma、26 Ma以来3期构造热事件,降温速率分别为6.46℃/Ma、4.91℃/Ma、3.84℃/Ma,对应的隆升速率分别为0.21 mm/a、0.16 mm/a、0.13 mm/a;说明134.47-57.67 Ma为缓慢降温和剥蚀夷平时期,对应的降温速率为0.64℃/Ma、差异隆升速率为0.02 mm/a。结合磷灰石裂变径迹测年和风火山群、五道梁群挤压缩短时代、区域伸展走滑起始年龄资料,推断昆仑山南部新生代山脉快速隆升发生于渐新世-中新世早期,估算隆升速率达0.26 mm/a。

关键词：离子探针U-Pb同位素测年矿物对热年代学分析西大滩盆北花岗岩昆仑山南部锆石U-Pb同位素年龄花岗岩昆仑山南部热历史构造热事件