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巴蜀文化区的“水库效应”
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作者 林向 《重庆文理学院学报(社会科学版)》 2014年第4期24-25,32,共3页
巴蜀文化区所处四川盆地具有得天独厚的自然与人文地理条件:一是四周有高山屏障、易守难攻,有利于社会安定发展;二是交通便利,"栈道千里,无所不通",东出三峡俯临江汉吴越,西接"藏彝走廊"连通中亚南亚;三是内部江河... 巴蜀文化区所处四川盆地具有得天独厚的自然与人文地理条件:一是四周有高山屏障、易守难攻,有利于社会安定发展;二是交通便利,"栈道千里,无所不通",东出三峡俯临江汉吴越,西接"藏彝走廊"连通中亚南亚;三是内部江河丘陵交错,气候宜人,资源和物产丰裕。从先秦到抗日战争,它常常成为盆地外发生战乱变故时一些人群的"避难所",既是中原王朝开拓西南边疆的"前哨基地",也是时机成熟时雄才豪杰逐鹿中原的"根据地"。它在源远流长的中华文明历史长河中犹如一座水库,对中国历代的政治、经济、文化、人口等问题,都起到了流动、储存、调节、融合、扩散等的"水库效应"。 展开更多
关键词 巴蜀文化区 巴蜀文化 文化交融 水库效应
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黄河干流河岸带C_4植物群落特征及其对水库生态效应的指示 被引量:4
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作者 张晓可 王海军 +1 位作者 茹辉军 赵伟华 《武汉植物学研究》 CSCD 北大核心 2010年第5期568-576,共9页
于2008年9月16日至10月31日对黄河干流河岸带植物群落开展了系统调查。共采集高等植物124种,分属于32科、97属,其中C4植物9科、24属、34种,占科、属、种总数的28%、25%和27%。对该区域的研究结果还表明:(1)C4植物主要分布于单子叶植物... 于2008年9月16日至10月31日对黄河干流河岸带植物群落开展了系统调查。共采集高等植物124种,分属于32科、97属,其中C4植物9科、24属、34种,占科、属、种总数的28%、25%和27%。对该区域的研究结果还表明:(1)C4植物主要分布于单子叶植物纲的禾本科和莎草科,两者共占C4植物总种数的61%。(2)从上游到下游C4植物种数递增,但中游C4/C3比、C4植物密度和生物量要明显高于上游和下游。(3)C4植物种数及C4/C3比与海拔、年均气温、年均降水量及年均流量均有相关关系,C4植物生物量仅和年均降水量显著相关。(4)水库位置的C4/C3比要明显高于其临近样区,说明C4植物对水库干扰下河岸带植被的动态变化具有一定的指示作用。 展开更多
关键词 C4植物 C4/C3比 水库效应 黄河
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水库健康效应评价指标体系初步研究 被引量:7
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作者 魏海 沈振中 赵斌 《水利水电科技进展》 CSCD 北大核心 2008年第4期32-36,共5页
从大坝安全、水库效益和水库生态效应的角度对水库健康效应进行探讨,提出水库健康效应的概念,分析水库健康评价的意义、特征以及影响水库健康状况的因素。初步建立了水库健康评价的结构指标体系和评价方法,提出了水库健康综合指数的概... 从大坝安全、水库效益和水库生态效应的角度对水库健康效应进行探讨,提出水库健康效应的概念,分析水库健康评价的意义、特征以及影响水库健康状况的因素。初步建立了水库健康评价的结构指标体系和评价方法,提出了水库健康综合指数的概念和计算方法,并利用水库健康综合指数对水库健康状况进行评价。 展开更多
关键词 病险水库 水库健康效应 指标体系 水库健康指数
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基于流溪河模型的乐昌峡水库入库洪水预报模型研究 被引量:8
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作者 黄家宝 董礼明 +2 位作者 陈洋波 王幻宇 陈隆杰 《水利水电技术》 CSCD 北大核心 2017年第4期1-7,12,共8页
采用流溪河模型构建乐昌峡水库入库洪水预报模型,通过"粒子群(PSO)"算法优选模型参数,并对实测洪水过程进行了模拟,对比模型性能。研究发现,采用流溪河模型的乐昌峡水库入库洪水预报性能优良,可满足乐昌峡水库入库洪水预报对... 采用流溪河模型构建乐昌峡水库入库洪水预报模型,通过"粒子群(PSO)"算法优选模型参数,并对实测洪水过程进行了模拟,对比模型性能。研究发现,采用流溪河模型的乐昌峡水库入库洪水预报性能优良,可满足乐昌峡水库入库洪水预报对精度的要求;模型参数优选可明显提高乐昌峡水库入库洪水预报流溪河模型的洪水模拟精度;"粒子群"算法具有很强的全局优化能力,快速的计算收敛能力,参数优选中种群进化次数在30次以内;乐昌峡水库的建成运行产生了一定的水库洪水效应,10场洪水平均峰现时间提前1.3 h,次洪径流系数增加1.596%,洪峰流量增加0.207%。该模型可用于同类水库入库洪水预报。 展开更多
关键词 水库洪水预报 分布式模型 流溪河模型 产汇流计算 水库洪水效应 洪峰预报 降雨径流预报 水文预报精度
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对水库诱发地震的预报方法及水库建设的思考
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作者 何欣昱 《城市地理》 2016年第9X期213-215,共3页
本文从水库诱发地震的争议为切入点,结合当前水库诱发地震的一些观点和研究,试图分析总结水库的规模等自身属性特征与岩性、构造等库区环境特征等对水库诱发地震可能性的定量化预报、评估方法与需要建立的数学模型。并简单讨论、总结当... 本文从水库诱发地震的争议为切入点,结合当前水库诱发地震的一些观点和研究,试图分析总结水库的规模等自身属性特征与岩性、构造等库区环境特征等对水库诱发地震可能性的定量化预报、评估方法与需要建立的数学模型。并简单讨论、总结当前水库诱发地震的预报模型实现存在的问题。并以此为发散点,联系水库自然环境效应等阐述对水库建设的思考与看法。 展开更多
关键词 水库 地震 变量 预报方法 水库环境效应
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Aqueel镇压器
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作者 宋聚国 赵嘉琨 《农机科技推广》 2003年第6期47-48,共2页
Aqueel,是在松软的土壤表面压出凹坑这一独特办法的商用名字。这些凹坑可象小水库一样储存水。Aqueel轮能在地上连续压出一行凹坑。多个Aqueel轮装在一根轴上,成为镇压器,其工作幅宽可以与所连接的机械相匹配。 Aqueel的作用原理 在土... Aqueel,是在松软的土壤表面压出凹坑这一独特办法的商用名字。这些凹坑可象小水库一样储存水。Aqueel轮能在地上连续压出一行凹坑。多个Aqueel轮装在一根轴上,成为镇压器,其工作幅宽可以与所连接的机械相匹配。 Aqueel的作用原理 在土壤表面压出具有一定容量的凹坑。 展开更多
关键词 Aqueel镇压器 作用原理 水库效应 集水作用 自洁性 土壤温度 积水灌溉
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Dynamics of Quantum Entanglement in Reservoir with Memory Effects 被引量:1
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作者 HAO Xiang SHA Jin-Qiao +1 位作者 SUN Jian ZHU Shi-Qun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第1期29-33,共5页
The non-Markovian dynamics of quantum entanglement is studied by the Shabani-Lidar master equation when one of entangled quantum systems is coupled to a local reservoir with memory effects.The completely positive redu... The non-Markovian dynamics of quantum entanglement is studied by the Shabani-Lidar master equation when one of entangled quantum systems is coupled to a local reservoir with memory effects.The completely positive reduced dynamical map can be constructed in the Kraus representation.Quantum entanglement decays more slowly in the non-Markovian environment.The decoherence time for quantum entanglement can be markedly increased with the change of the memory kernel.It is found out that the entanglement sudden death between quantum systems and entanglement sudden birth between the system and reservoir occur at different instants. 展开更多
关键词 entanglement dynamics master equation Kraus representation NON-MARKOVIAN
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Research on compound plugging removal technology and its application in Xinmu oilfield of Jilin
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作者 WANG Xianfeng MO Xiuwen 《Global Geology》 2012年第3期252-256,共5页
Most fault-block reservoirs in Xinmu oilfield belong to heterogeneous sandstone in characters which has low permeability, and reservoir pollution is a common phenomenon in this area. Acidizing deplugging in oil wells ... Most fault-block reservoirs in Xinmu oilfield belong to heterogeneous sandstone in characters which has low permeability, and reservoir pollution is a common phenomenon in this area. Acidizing deplugging in oil wells has become one of the major measures to improve production efficiency in the field. A compound deplug- ging technology in high efficiency low corrosion is developed for this kind of low permeability sandstone reser- voir. On the basis of profoundly understanding of the reservoir's physical properties and sensitivity, along with comprehensive analysis of the cause for jams in oil wells, a series of experiments are carried out in order to in- vestigate the dissolution reaction among samples and deplugging inhibitor, sample dissolving speed, formation fluid compatibility, reduction of secondary pollution, etc. Considered reservoir condition in nearby wells the op- timized compositional deplugging liquid formula is selected for this reservoir. It is featured by reducing the de- plugging reaction speed, extending solution for processing radius, preventing secondary damage in dissolution processing, and removing plug pollution effectively. To implement this high efficiency low corrosion deplugging measure based on reservoir condition in the borehole and nearby wells, a relatively better result of deplugging and production increasing is achieved, which enriches the measures to increase production in Xinmu oilfield, and this method can be applied to other similar oiffields for the purpose of maintaining the crude oil production and providing assistant for increasing the production significantly. 展开更多
关键词 compound plugging removal technology performance evaluation field application Xinmu oilfield
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“沙漠人造海”的三大效应
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作者 霍有光 《海事大观》 2004年第2期31-31,共1页
关键词 “海水西调” “沙漠人造海” 增雨增湿效应 水库效应 绿洲效应 生态环境
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厚积薄发 耐力持久
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作者 王戈 《汽车与社会》 2015年第31期92-93,共2页
力爽点火组件与智能电库搭配使用感受 很久以前就有耳闻力爽点火组件,它曾连续10年获得全国汽车场地越野锦标赛唯一指定使用产品,研发经验已经相当成熟。而力爽智能电库,则是力爽最新推出的具有水库效应的电子整流装置,将这两种部... 力爽点火组件与智能电库搭配使用感受 很久以前就有耳闻力爽点火组件,它曾连续10年获得全国汽车场地越野锦标赛唯一指定使用产品,研发经验已经相当成熟。而力爽智能电库,则是力爽最新推出的具有水库效应的电子整流装置,将这两种部品同时装车会怎样呢? 展开更多
关键词 耐力 使用感受 整流装置 水库效应 能电 组件 点火
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An optimal fracture geometry design method of fractured horizontal wells in heterogeneous tight gas reservoirs 被引量:4
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作者 ZENG FanHui KE YuBiao GUO JianChun 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2016年第2期241-251,共11页
In this work, the unified fracture design (UFD) is extended for the first time to the fractured horizontal wells in heterogeneous closed box-shaped tight gas reservoirs. Utilizing the direct boundary element method ... In this work, the unified fracture design (UFD) is extended for the first time to the fractured horizontal wells in heterogeneous closed box-shaped tight gas reservoirs. Utilizing the direct boundary element method and influence function, the dimensionless fracture productivity index is obtained and expressed in the function of proppant volume and fracture geometry at the pseu- do-steady state. With the iterative method, the effectively propped permeability, kfe, is corrected using the i^-situ Reynolds number, NRe. The goal of this paper is to present a new UFD extension to design the proppant volume and the optimal fracture geometry. The results show that there exists an optimal proppant volume for a certain reservoir. The small aspect ratio (yJXe) and high permeability reservoirs need short and wide fractures to diminish the non-Darcy effect. On the contrary, long and narrow fractures are required for the large aspect ratio and low permeability reservoirs. A small proppant volame is prone to creating long fractures, while a relatively large proppant volume creates wide fractures. The new extension can be used to evaluate the previous fracture parameters and design the following fracture parameters of the fractured horizontal well in heterogeneous tight gas reservoirs, with the non-Darcy effect taken into account. 展开更多
关键词 tight gas reservoir HETEROGENEITY non-Darcy effect fractured horizontal well fracture geometry design
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Finite element investigation of the poroelastic effect on the Xinfengjiang Reservoir-triggered earthquake 被引量:16
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作者 CHENG HuiHong ZHANG Huai +4 位作者 ZHU BoJing SUN YuJun ZHENG Liang YANG ShaoHua SHI YaoLin 《Science China Earth Sciences》 SCIE EI CAS 2012年第12期1942-1952,共11页
Coulomb failure stress changes (ΔCFS) are used in the study of reservoir-induced seismicity (RIS) generation.The threshold value of ΔCFS that can trigger earthquakes is an important issue that deserves thorough rese... Coulomb failure stress changes (ΔCFS) are used in the study of reservoir-induced seismicity (RIS) generation.The threshold value of ΔCFS that can trigger earthquakes is an important issue that deserves thorough research.The M s 6.1 earthquake in the Xinfengjiang Reservoir in 1962 is well acknowledged as the largest reservoir-induced earthquake in China.Therefore, it is a logical site for quantitative calculation of ΔCFS induced by the filling of the reservoir and for investigating the magnitude of CFS that can trigger reservoir seismic activities.To better understand the RIS mechanism, a three-dimensional poroelastic finite element model of the Xinfengjiang Reservoir is proposed here, taking into consideration of the precise topography and dynamic water level.We calculate the instant changes of stress and pore pressure induced by water load, and the time variation of effective stresses due to pore water diffusion.The CFS on the seismogenesis faults and the accumulation of strain energy in the reservoir region are also calculated.Primary results suggest that the reservoir impoundment increases both pore pressure and CFS on the fault at the focal depth.The diffusion of pore pressure was likely the main factor that triggered the main earthquake, whereas the elastic stress owing to water load was relatively small.The magnitude of CFS on seismogenesis fault can reach approximately 10 kPa, and the ΔCFS values at the hypocenter can be about 0.7-3.0 kPa, depending on the fault diffusion coefficient.The calculated maximum vertical subsidence caused by the water load in the Xinfengjiang Reservoir is 17.5 mm, which is in good agreement with the observed value of 15 mm.The accumulated strain energy owing to water load was only about 7.3×10 11 J, even less than 1% of the seismic wave energy released by the earthquake.The reservoir impoundment was the only factor that triggered the earthquake. 展开更多
关键词 Xinfengjiang Reservoir reservoir triggered seismicity Coulomb failure stress poroelasticity model finite element method
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