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Meso-Cenozoic Tectonic Events Recorded by Apatite Fission Track in the Northern Longmen-Micang Mountains Region

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Acta Geologica Sinica(English Edition) 2012年第1期86卷 153-165页

作者： LEI Yongliang JIA Chengzao li benliang WEI Guoqi CHEN Zhuxin SHI Xin State Key Laboratory of Enhanced Oil Recovery Beijing 100083China Research Institute of Petroleum Exploration and Development(RIPED) PetroChinaBeijing 100083China PetroChina Company limited Beijing 100010China Research Institute of Petroleum Exploration and Development-Langfang Langfang 065007China

There is a cross-cutting relationship between the E-W trending structures and the NE- trending structures in the northern Longmen-Micang Mountains region, which reflects possible regional tectonic transition and migration. Apatite fission track （AFT） analyses of 15 samples collected from this area yield apparent ages varying from 30.3±4.2 Ma to 111.7±9.0 Ma and confined-track-lengths ranging from 10.6±0.3 pm to 12.4±0.1 μm. Four specific groups were identified on the basis of the Track Age Spectrum Calculation （TASC） patterns, i.e., 143-112 Ma, 93.6-88 Ma, 42-40 Ma and -25.6 Ma. These age groups correspond to the spatial distributions of datasets and may represent four tectonic events. Together with the regional deformation patterns, the four age groups are interpreted to indicate tectonic superposition, transition and migration during the Meso-Cenozoic with the following possible order：（1） the Micang Mountains belt was dominated by the E-W trending structure during 143-112 Ma; （2） the contraction of the Longmen Mountains belt from the NW to the SE during 93.6-88 Ma led to the superposition of the NE-trending structures over the E-W trendinding structures; （3） dextral strike-slip shear dominated the Longmen Mountains belt at 42-40 Ma; （4） westward migration of the active tectonic belt occurred from 93.6-25.6 Ma in a break-back sequence in the northern Longmen Mountains belt. The Late Cenozoic tectonics in the northern Longmen Mountains belt are characterized by the dextral strike-slip shear and the occurrence of westward break-back sequence of deformations. As a result, north-south differences in deformations along the Longmen Mountains belt were intensified since the Miocene time and strains were mainly accumulated in the hinterland of the Longmen Mountains instead of being propagated to the foreland basin.

关键词： apatite fission track tectonic events Longmen Mountains Micang Mountains Meso-Cenozoic

Differential Hydrocarbon Accumulation Controlled by Structural Styles along the Southern and Northern Tianshan Thrust Belt

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Acta Geologica Sinica(English Edition) 2013年第4期87卷 1109-1119页

作者： SONG Yan ZHAO Mengjun FANG Shihu li benliang liU Shaobo ZHUO Qingong Key Laboratory of Basin Structure and Hydrocarbon Accumulation CNPC State Key Laboratory of Petroleum Resource and Prospecting Research Institute of Petroleum Exploration and Development PetroChina

The Kuqa and the Southern Junggar foreland thrust belts, which lie to the southern and northern Tianshan, respectively, were formed under a strong compressional tectonic setting. Due to the differential propagation and deformation under the control of the décollement horizon, the structural deformation styles differ in the Kuqa and Southern Junggar thrust belts. Imbricated stacking is developed in the Kuqa thrust belt, forming a piggyback imbricated pattern of faulted anticline and fault-block structural assemblage dominated by salt structures. In contrast, wedge-shaped thrusts are developed in Southern Junggar, mainly forming vertical laminated patterns of multi-wedge-structure stacks strongly influenced by the décollement horizons. The different deformation patterns and structural styles of the north and south of Tian Shan control the contrasting characteristics of hydrocarbon accumulation in the foreland thrust belts of the Kuqa and the Southern Junggar thrust belts, including the variance in the hydrocarbon trap types, pathway systems and hydrocarbon-bearing horizons. Proven by the hydrocarbon accumulation research and exploration achievements, recent exploration targets should focus on sub-salt piggyback imbricated structural patterns in the Kuqa and the deep laminated patterns in the Southern Junggar thrust belt.

关键词： northern and southern TianShan structural style hydrocarbon accumulation,accumulation model

Cenozoic tectonic and sedimentary evolution of southern Qaidam Basin, NE Tibetan Plateau and its implication for the rejuvenation of Eastern Kunlun Mountains

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Science China Earth Sciences 2014年第11期57卷 2726-2739页

作者： MAO liGuang XIAO AnCheng WU Lei li benliang WANG liQun LOU QianQian DONG YouPu QIN SuHua Department of Earth Sciences Zhejiang University Research Center for Structures in Oil & Gas Bearing Basins Ministry of Education PetroChina Research Institute of Petroleum Exploration & Development Qinghai Oilfield Company PetroChina Zhejiang No.3 Geology Group Research Institute of BGP inc. China National Petroleum Corporation

The Eastern Kunlun Mountains play an important role in the growth and eastward extrusion of the Tibetan Plateau. Tectonic and sedimentary study of the Cenozoic Qaidam Basin, especially the southern part, provides key evidence for understanding their evolution. Here we present evidence including isopach maps, seismic sections and sedimentary analysis of single well to illustrate the sedimentary development of the basin and the structural features of its southern margin. The Qaidam Basin extended across Qiman Tagh-Eastern Kunlun Mountains in the early Cenozoic and withdrew northward at ca. 35.5 Ma, and then buckled as an EW striking elliptical depression since ca. 14.9 Ma, with the main depocenter migrating eastward. Our results support the view that the Kumukol and Hoh Xil basins joined the Qaidam Basin in the early Cenozoic time and we propose the Eastern Kunlun Mountains uplifted in the mid-Miocene.

关键词： NE Tibetan Plateau Qaidam Basin Eastern Kunlun Cenozoic mid-Miocene

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准噶尔西北缘斜向挤压构造与走滑断裂

地质科学 2011年第3期46卷 696-708页

作者：杨庚王晓波李本亮石昕中国石油勘探开发研究院提高石油采收率国家重点实验室北京100083

古板块构造研究表明古生代以来,准噶尔地块以斜向方式拼合到阿尔泰(Altaids)造山带构造域内,导致准噶尔西北缘一直处在斜向挤压构造背景之下,并发育高角度逆冲推覆构造带以及横向走滑断裂。地面地质调查、遥感卫星影像解译、大地电磁测... 详细信息

古板块构造研究表明古生代以来,准噶尔地块以斜向方式拼合到阿尔泰(Altaids)造山带构造域内,导致准噶尔西北缘一直处在斜向挤压构造背景之下,并发育高角度逆冲推覆构造带以及横向走滑断裂。地面地质调查、遥感卫星影像解译、大地电磁测深剖面和地震剖面构造解释资料综合研究表明,准噶尔西北缘边界断裂为达拉布特左行走滑断裂,西北缘逆冲推覆构造带为基底卷入的高角度逆冲断裂褶皱带;在与逆冲带走向相垂直方向,发育有北西向横向走滑断裂,这些断裂为同一斜向挤压构造背景下形成的同期构造,形成时间约在晚二叠到侏罗纪之间。大地电磁测深和地震剖面解释表明,达拉布特走滑断裂控制了西北缘高角度逆冲断裂的分布与性质。西北缘二维和三维地震剖面解释表明,横向走滑断裂样式为正花状构造或者负花状构造,同时具有向南东或北西方向逆冲和拉伸的特征。横向走滑断裂为西北缘逆冲构造南北方向分段的主要断裂,并控制了西北缘中生代地层的沉积。西北缘构造是形成于主边界断裂的斜向挤压作用,而基底卷入逆冲断裂则属非纯挤压形成的逆冲构造。

关键词：准噶尔盆地西北缘斜向挤压走滑断裂横向走滑构造

Experimental analysis of ductile-slip rheology in shallow structural level faults

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Science China Earth Sciences 2001年第6期44卷 481-489页

作者：李本亮舒良树孙岩 M.Faure J.Charvet Department of Earth Sciences State Key Laboratory of Mineral Deposits Research Nanjing University Nanjing 210093 China Department of Earth Sciences Orleans University Orleans France

The authors select different grain size samples from granitic body in Weishan, central Hunan, to conduct mylonitization experiments under high temperature (HT) and high pressure (HP), by which the temperature and pressure conditions of mylonitization and microstructures of deformation have been obtained. Through the transmission electron microscopy (TEM) observations of experimental mylonite, we calculate its dislocation density (D), differential rheological stress (Pd) and speed rate of strain (Rs): 3.20x109/cm2, 139.32 MPa and 6.39x10-10/s respectively. The results are in the same magnitude-order with those of natural mylonite from fault zones. By comparison and analysis of chemical compositions and microstructures of different structural environments, the authors establish approximate rheological parameters related to shallow structural level and also suggest the multiple rheological properties and total trend from deep structural level to shallow structural level.

关键词： HT/HP experiment ductile and rheology mylonite mylonite mylonite

计算±1100 kV特高压直流输电线路对埋地油气管线磁感应影响的快速二阶差分方法

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电网技术 2019年第9期43卷 3305-3310页

作者：李本良葛小宁李燕雷蒋乐邹军国网经济技术研究院有限公司北京市昌平区102209 电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系) 北京市海淀区100084 国家电网有限公司北京市西城区100031 国网四川省电力公司四川省成都市610000

高压直流输电线路发生极导线对地短路时,导线和地线中电流由于电磁感应在邻近埋地油气金属管道产生纵向感应电动势,造成对管线磁感应危险影响。±1100 kV高压直流输电线路由于线路长,与金属管线交叉邻近的情况复杂,对评估方法的精度和... 详细信息

高压直流输电线路发生极导线对地短路时,导线和地线中电流由于电磁感应在邻近埋地油气金属管道产生纵向感应电动势,造成对管线磁感应危险影响。±1100 kV高压直流输电线路由于线路长,与金属管线交叉邻近的情况复杂,对评估方法的精度和效率有更高的要求。为定量评估危险影响的程度,提出一种采用二阶有限差分技术求解管道中的感应电流和对地电压的新计算方案,其对场线耦合传输线方程中内点采用有限差分技术离散,对管道端部,结合边界条件确定了相应的准确离散格式。通过与已有结果的对比,数值算例表明文中方法的正确性;同时,由于文中方法是二阶精度的,计算结果准确,计算效率高,为快速计算高压直流输电线路的磁感应危险影响提供了基础,可应用于特高压/高压直流输电线路对邻近埋地金属管线危险影响的评估。

关键词：高压直流输电线路油气管线有限差分

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沥青混合料自愈合特性四点弯曲疲劳试验研究

建筑材料学报 2015年第4期18卷 572-577页

作者：黄卫东李本亮黄明同济大学道路与交通工程教育部重点实验室上海201804 上海市政工程设计研究总院博士后工作站上海200092

通过应变控制四点弯曲疲劳试验,变化加载频率分析沥青混合料的即时自愈合,变化愈合温度、时间、荷载和损伤程度分析沥青混合料的后期自愈合.结果表明:沥青混合料的即时自愈合伴随加载产生,愈合效果为SBS-AC13>TB-AC13>基质-AC13;愈合温... 详细信息

通过应变控制四点弯曲疲劳试验,变化加载频率分析沥青混合料的即时自愈合,变化愈合温度、时间、荷载和损伤程度分析沥青混合料的后期自愈合.结果表明:沥青混合料的即时自愈合伴随加载产生,愈合效果为SBS-AC13>TB-AC13>基质-AC13;愈合温度、时间、荷载对沥青混合料的后期愈合具有正面作用,而损伤程度具有负面作用;橡胶沥青混合料疲劳寿命对自愈合条件的依赖性小于SBS沥青混合料,对沥青用量变化敏感性低于SBS沥青混合料;橡胶沥青混合料的劲度模量恢复率大于疲劳寿命恢复率,且疲劳寿命恢复率的离散性较大,劲度模量恢复率的离散性较小.

关键词：沥青混合料四点弯曲疲劳试验自愈合特性

模型参数估计法计算地下地返回导体参数频率特性

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高电压技术 2015年第3期41卷 1028-1033页

作者：周宏威孙丽萍李本良东北林业大学机电工程学院哈尔滨150040 国网北京经济技术研究院北京100052

在地下地返回导体参数计算中,为降低优化算法对初值选择的依赖性和提高收敛速度,基于模型参数估计(MBPE),提出了基于频域参数逐步外推概念构造初始值的方法。以Sunde公式为基础,对隐函数形式的导体参数计算公式采用非线性优化方法求解,... 详细信息

在地下地返回导体参数计算中,为降低优化算法对初值选择的依赖性和提高收敛速度,基于模型参数估计(MBPE),提出了基于频域参数逐步外推概念构造初始值的方法。以Sunde公式为基础,对隐函数形式的导体参数计算公式采用非线性优化方法求解,利用已计算的参数值推出下一个频率的近似解作为优化问题初始值,根据所得初值计算不同大地电导率接地导体参数,分析冲击电流激励下接地导体暂态响应。结果表明,当大地电导率为0.1 S/m、0.01 S/m和0.001 S/m时,土壤的分布电导均远远大于其分布电容,因此,冲击电流作用下,对于实际土壤参数,接地导体时域传输线模型中可不考虑对地电容的作用。应用MBPE方法可以避免计算导体参数时初值选择的盲目性,从而提高了计算效率并保证了算法的收敛性。

关键词：模型参数估计接地导体参数计算频域推进时域模型传输线模型

采用有限差分求解高压直流输电线路空间离子流场的新方法

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电工技术学报 2015年第6期30卷 85-91页

作者：乔骥邹军袁建生李本良清华大学电力系统国家重点实验室北京100084 国网北京经济技术研究院北京102209

针对高压/特高压直流输电线路空间离子流场及合成电场进行计算,基于*** Maruvada等人提出的沿电力线弧长坐标求解空间离子浓度的模型,建立变系数微分方程组及其边界条件。对于微分方程组的求解,提出采用有限差分方法,将原微分方程组转... 详细信息

针对高压/特高压直流输电线路空间离子流场及合成电场进行计算,基于*** Maruvada等人提出的沿电力线弧长坐标求解空间离子浓度的模型,建立变系数微分方程组及其边界条件。对于微分方程组的求解,提出采用有限差分方法,将原微分方程组转化为非线性代数方程组进行求解。该方法降低了方程求解难度,提高了计算速度,并适用于单极性和双极性空间离子流场的求解。

关键词：高压直流输电线路空间离子流场合成电场有限差分