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TEXTUAL RESEARCH ON THE MAIN SOURCE OF THE CHANGJIANG RIVER 总被引：2，自引：1，他引：1
The Chinese people began to research the main source of the Changjiang (Yangtze) River 2,400 years ago. Limited by the scientific level, they did not discover it.The Tuotuo River was determined as the main source of the Changjiang River in the 1970s. However, this was not correct, because when comparing the length of the Tuotuo River with the Dam River, the glacier length at the headwaters was added to the Tuotuo River, resulting in that the Tuotuo River is 1 km longer than the Dam River, keeping in mind that the glacier can not be regarded as part of the river.In the summer of 1986, we investigated the source of the Changjiang River, we accurately measured the length of both the Tuotuo and Dam rivers, we discovered that the Dam River was 353.1 km long, and the Tuotuo River was 346.3 km long, the Dam River thus being 6.8 km longer than the Tuotuo River. The discharge of the Dam River is 196.18 m3/ sec., 2.6 times as large as that of the Tuotuo River, that of the Tuotuo River is 75.10 m3/sec. The drainag 相似文献
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三江平原沼泽土微观特性试验研究 总被引：6，自引：1，他引：5
从微观形态、微结构特征、粒度分析、土颗粒间的排列方式、孔隙大小分布、有机质含量以及矿物成分等方面对三江平原的两种沼泽土和北京翠湖湿地土进行了一系列微观结构的对比试验.结果表明:沼泽白土和翠湖湿地土与一般软土性质相似,但沼泽黑土含水率、液性指数、孔隙比、孔隙数量、孔径和孔隙体积远远大于沼泽白土和翠湖湿地土,有机质含量最大,特性明显突出.研究成果有助于提高对沼泽土特性的认识,可为沼泽地陷落体救助和沼泽湿地保护和合理开发等工程建设提供参考. 相似文献
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ＣＯＮＴＥＮＴＡＮＤＤＩＳＴＲＩＢＵＴＩＯＮＯＦＴＲＡＣＥＥＬＥＭＥＮＴＳＩＮＳＯＩＬＳＯＦＴＨＥＤＡＭＲＩＶＥＲＡＮＤＴＵＯＴＵＯＲＩＶＥＲＢＡＳＩＮＳ￥ＳｈａｏＱｉｎｇｃｈｕｎ（邵庆春）ＤｅｎｇＷｅｉ（邓伟）ＳｕｎＧｕａｎｇｙｏｕ（孙广友）（Ｃｈ... 相似文献
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