我国盐岩矿床主要为层状结构,在建造岩盐地下储库时腔底不溶物含量大,导致其有效容积变小,造腔成本增加。提出一种排空盐岩地下储库不溶物技术,并进行了排空盐岩地下储库不溶物的无固相混合物配比试验。结果表明,无固相混合物的最优配...我国盐岩矿床主要为层状结构,在建造岩盐地下储库时腔底不溶物含量大,导致其有效容积变小,造腔成本增加。提出一种排空盐岩地下储库不溶物技术,并进行了排空盐岩地下储库不溶物的无固相混合物配比试验。结果表明,无固相混合物的最优配比为饱和氯化钠水溶液500m L+淀粉5%+甲醛100 m L+生物聚合物(XC)0.5%,其表观黏度、塑性黏度等流变性能参数满足盐岩地下储库排出造腔腔底不溶物的使用条件,温度和时间稳定性较好。高盐条件下,该无固相混合物携砂能力优良,对5种不溶物样品的排空率平均为71.32%,排空效果较好。试验结果可为以聚合物交联淀粉和生物聚合物为主剂的无固相混合物的工业应用提供依据,并可为排出盐岩地下储库不溶物的相关研究提供方向。展开更多
Insoluble microparticles in ice cores are related closely to the transportation of eolian dust,and thus are important natural media to reconstruct climate change.In this study,we conducted a systematic mineral-magneti...Insoluble microparticles in ice cores are related closely to the transportation of eolian dust,and thus are important natural media to reconstruct climate change.In this study,we conducted a systematic mineral-magnetic investigation of insoluble microparticles in the Nojingkangsang ice core (29°2.1'N,90°11.88'E,5950 m) from the Southern Tibetan Plateau.Results indicate that the dominant magnetic mineral is magnetite,and its concentration has grown significantly since the 1980s,which coincides with trends in climate warming of the Tibetan Plateau.Influenced by regional warming,the glacial recession around Nojingkangsang shortens the distance between the dust source and glacial areas and thus increases the concentration of coarse-grained magnetic minerals in ice cores.However,the frequency of dust storms,associated with annual precipitation,could play only a regulatory role on the magnetic content over yearly (or seasonal) time scales.Therefore,using a new approach,the magnetic index of insoluble microparticles in ice cores of this region is seen as mainly reflecting trends in climate warming.展开更多
文摘我国盐岩矿床主要为层状结构,在建造岩盐地下储库时腔底不溶物含量大,导致其有效容积变小,造腔成本增加。提出一种排空盐岩地下储库不溶物技术,并进行了排空盐岩地下储库不溶物的无固相混合物配比试验。结果表明,无固相混合物的最优配比为饱和氯化钠水溶液500m L+淀粉5%+甲醛100 m L+生物聚合物(XC)0.5%,其表观黏度、塑性黏度等流变性能参数满足盐岩地下储库排出造腔腔底不溶物的使用条件,温度和时间稳定性较好。高盐条件下,该无固相混合物携砂能力优良,对5种不溶物样品的排空率平均为71.32%,排空效果较好。试验结果可为以聚合物交联淀粉和生物聚合物为主剂的无固相混合物的工业应用提供依据,并可为排出盐岩地下储库不溶物的相关研究提供方向。
基金supported by National Natural Science Foundation of China (Grants Nos. 40874033,40974036,41074041 and 41025013)CAS/SAFEA International Partnership Program for Creative Research Teams
文摘Insoluble microparticles in ice cores are related closely to the transportation of eolian dust,and thus are important natural media to reconstruct climate change.In this study,we conducted a systematic mineral-magnetic investigation of insoluble microparticles in the Nojingkangsang ice core (29°2.1'N,90°11.88'E,5950 m) from the Southern Tibetan Plateau.Results indicate that the dominant magnetic mineral is magnetite,and its concentration has grown significantly since the 1980s,which coincides with trends in climate warming of the Tibetan Plateau.Influenced by regional warming,the glacial recession around Nojingkangsang shortens the distance between the dust source and glacial areas and thus increases the concentration of coarse-grained magnetic minerals in ice cores.However,the frequency of dust storms,associated with annual precipitation,could play only a regulatory role on the magnetic content over yearly (or seasonal) time scales.Therefore,using a new approach,the magnetic index of insoluble microparticles in ice cores of this region is seen as mainly reflecting trends in climate warming.
