砒砂岩地区土壤侵蚀机理研究

Research on soil erosion mechanism in soft rock regions

在砒砂岩地区土壤侵蚀特征研究的基础上,首次按产沙部位、方式、时序、动力和流程给出了砒砂岩区完整的土壤侵蚀分类系统图;其次,暴雨径流主要是输移的动力,其搬运输移力和对沟床的冲刷,可用单宽功率表示,并给出了两组判别式;其三,给出了小流域产沙量和输沙量的计算式。

Based on the research of basic soil erosion features in soft rock regions, the paper firstly provides a complete soil erosion classification diagram according to sediment yield position, approach, sequence, force and flow path. Secondly, the research shows that the storm runoff is the main power of sediment transportation which can be expressed by unit width capacity factor. Thirdly, a formula for sediment yield and sediment transportation in small watersheds is proposed.