|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Improvement of the assimilable organic carbon (AOC) analytical method for reclaimed water显示文摘 | Xin ZHAO Hongying HU Shuming LIU Feng JIANG Xiaolei SHI Mingtang LI Xueqiao XU | 2013 | Frontiers of Environmental Science & Engineering2013，7，4： | 5 |
| 2 | Thermal influence of ponding and buried warm-oil pipelines on permafrost: a case study of the China-Russia Crude Oil Pipeline显示文摘Buried pipelines are widely used for transporting oil in remote cold regions. However, the warm oil can induce considerable thermal influence on the surrounding frozen soils and result in severe maintenance problems. This paper presents a case study of the thermal influence of ponding and buried warm-oil pipelines on permafrost along the China-Russia Crude Oil Pipeline(CRCOP) in Northeast China. Since its operation in 2011, the operation of the warm-oil pipelines has led to rapid warming and thawing of the surrounding permafrost and development of sizable ponding along the pipeline route,which, in return, exacerbates the permafrost degradation. A field study was conducted along a 400-km long segment of the CRCOP in permafrost regions of Northeast China to collect the location and size information of ponding. A two-dimensional heat transfer model coupled with phase change was established to analyze the thermal influence of ponding and the operation of warm-oil pipelines on the surrounding permafrost. In-situ measured ground temperatures from a monitoring site were obtained to validate the numerical model. The simulation results show that ponding accelerates the development of the thaw bulb around the pipeline. The maximum thaw depth below the pipeline increases from 4 m for the case without ponding to 9 m for the case with ponding after 50 years of operation, and ponding directly above the pipe induces the maximum thaw depth. Engineering measures should be adopted to control the size or even eliminate surface water-rich ponding for the long-term performance of buried warm-oil pipelines. | YanHu Mu MingTang Chai GuoYu Li Wei Ma Fei Wang YaPeng Cao | 2020 | Research in Cold and Arid Regions2020，12，2： | 2 |
| 3 | Function identifica- tion of bovine Nrampl promoter and intron 1 显示文摘 | Hao Linlin Zhang Libo Li Mingtang el al | 2011 | Animal Cells and Systenrs2011，9，： | 1 |
| 4 | New advances in karst collapse research in China显示文摘 | Lei Mingtang Xiao Zhenjiang Li Yu | 2002 | Environmental Geology2002，42，5： | 1 |
| 5 | Function identification of bovine Nramp1 promoter and intron 1显示文摘 | Linlin Hao Libo Zhang Mingtang Li Nan Wang Songcai Liu Jifeng Zhong | 2011 | Animal Cells and Systems2011，，3： | 1 |
| 6 | Research on the manufacture of multi-sipes redial tire moulds by EDM显示文摘 | Mingtang Feng Zhigang Li | 2011 | 中国科技博览2011，，4： | 0 |
| 7 | Relationship between ponding and topographic factors along the China-Russia Crude Oil Pipeline in permafrost regions显示文摘The original landform along the China Russia Crude Oil Pipeline(CRCOP,line 2)was disturbed during installation of pavement for the pipeline.Forest and vegetation coverage is dense,and runoff develops along the pipe.Since the opera tion of the CRCOP(line 2)began in 2018,ponding has appeared on both sides of the pipeline.If there is no drainage,ponding can hardly dissipate,due to the low permeability of the permafrost layer.With the supply of surface flow and the transportation of oil at positive temperatures,ponding promotes an increase in temperature and changes the boundary ther mal conditions of the pipeline.Meanwhile,when the ponding freezes and thaws,frost heave threatens operational safety of the pipeline.Furthermore,the ponding can affect the thermal condition of line 1.In this paper,the distribution of pond ing along the CRCOP was obtained by field investigation.The type and cause of ponding were summarized,and the catch ment and stream order were extracted by the Digital Elevation Model(DEM).According to the statistical results in attri butes for topographic factors,it is known that ponding along the pipeline is relative to elevation,slope,aspect,and the Topographic Wetness Index(TWI).Water easily accumulates at altitudes of 300450 m,slopes within 3°5°,aspect in the northeast or south,TWI within 1316,flow direction in north east south,and flow length within 90150 km.This paper proposes a theoretical basis for the cause and characteristics of ponding along the pipeline. | MingTang Chai YanHu Mu GuoYu Li Wei Ma Fei Wang | 2019 | Research in Cold and Arid Regions2019，11，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员