茶叶是鹤峰县域经济发展的支柱产业,具有悠久的种植历史,在国内外具有一定影响,但发展遭遇瓶颈.针对近年来鹤峰茶叶产业发展存在一些亟待解决的问题,运用SWOT分析方法研究其发展的优势、劣势及面临的发展机遇和挑战,提出相应建议,以期为鹤峰县茶叶生产的可持续发展提供参考.

The debris flow occurred in Xianglutan gully was a typical gully debris flow,which was located in Aba Tibetan Autonomous Prefecture in Sichuan Province.According to the basic features of the valley system and the debris flow,the paper at first discusses the formation conditions of the debris flow,like topography,water source and sediment source,then calculates the dynamic parameters,including bulk density,flow rate,flow capacity and sediment flush-out.Finally,proposes the appropriate prevention suggestion for the debris flow.

There are some mud flows round the dam site of a hydropower station in southwest China which threaten the security of the dam and other buildings.This paper deals with kinetics and danger of the mud flows and makes proposals for comprehensive control of the mud flows by the example of DB valley.

The stability of Xiahongyan accumulation is of great significance to the proposed dam and ancillary facilities of the waterpower.In this paper,according to topography signs of deformation and characteristics of the different components,we have identified different engineering geology zones on the basis of in-depth analysis of the basic characteristics of accumulation.On the basis of this,we discussed the causes of the talus slope and deformation mechanism of the future,mainly focusing on the trigger factors which impact on the stability of the talus slope.Finally,we evaluated the local stability as well as the whole accumulation(subarea) by using the limit equilibrium method.Based on the calculated results,we could analysis the stability of the current talus slope and predict the consequences of the engineering harm caused by the instability of the talus slope.