小江流域第四纪泥石流期的初步划分

本文就１０Ｅ１级３０００Ｖ ＤＣ电力机车的润滑和齿轮磨损进行了探讨，并对探查润滑故障和齿轮磨损可能的引发原因作了归类。为了理解摩擦学理论，文中的第一部分是作者作的文献研究，第二部分论述的是对有问题范围所进行的探查。作者在文中还试图钭这两部分有机地联系起来。

PRELIMINARY DIVISION OF THE QUARTERNARY DEBRIS FLOW PERIODS IN XIAOJIANG BASIN, YUNNAN

Xiaojiang River Basin in Northeastern Yunnan Province not only developed extensively modern debris flow but also distributed wide-ranging of Paleo-debris-flow. Paleo-debris-flow mainly distributed in Xincun Basin, middle reach of Xiaojiang. According to the distributive location of different period of debris flow sediments, petrographical facies feature and fossil soil characters, sporo-pollen multiplicities and some absolute age documents, this paper prelimilarily classifies the debris flow in Xiaojiang into five relative long-term active periods, they correspond to the 19th, 13th, 9th, 5th and 1st stages of deep maraine, layer oxygen isostope curve respectively. Each debris flow also exists several sub-periods. This region is always located at the monsoon climatic region since the Quarternary, thus the long term debris flow periods are confined by the global glaciation and inter-glaciation climate fluctuation. The widespreading of modern debris flow is due to the post-glacial periodic climate, the enhanced human activities and the unreasonable reclamation of the mountain enlarge the distribution range and intensity. The multi-planation surfaces lie in different height because the two Planation surfaces are de-composited by later fault movements. This region is in the uplift process since the Mid-pleistocene Epoch.