The engineering and techniques to prevent floods and deduce disasters in the gneiss regions of the Taihang Mountains
太行山片麻岩区防洪减灾工程技术研究

The engineering and techniques to prevent floods and deduce disasters in gneiss region of hills,low mountain and subalpine were studied.The measures include the combinations of sluice and drainage,biological measure and engineering measure,and draining systems of slope and gully.These measures conduce to the amounts of water holding in the soil of 3 typical regions that are 320mm,276.4mm and 309.1mm and the amounts of soil erosion that are 38.2t/km2 a,148.6t/km2 a and 44.91/km2 a,thus decreasing by 89.3%,91.7% and 77.8% than the control.The effect of preventing floods is very well.