论文部分内容阅读
为科学计算煤矿开发建设过程中弃土弃渣、扰动地面、非硬化路面等的新增水土流失量,以神府东胜煤田为研究背景,将未经人为扰动撂荒地作为自然侵蚀本底值的研究对象,采用野外人工模拟降雨的方法,对原地面的侵蚀产沙规律进行研究。结果表明:原地面含沙量随时间的变化形式有3种,平缓型、单峰型和多峰型。产流时间与降雨强度、产沙量与降雨强度和坡度的关系均呈幂函数相关,径流流速和流深与降雨强度呈指数函数相关,径流量与降雨强度、产沙量与径流量之间呈线性相关。
In order to scientifically calculate the amount of newly added water and soil loss during the development and construction of coal mines, spoil ground, non-hardened pavement and so on, taking Shenfu Dongsheng coalfield as a research background, the abandoned lands without artificial disturbance are taken as the natural erosion background value Of the research object, using artificial rainfall simulation method to study the original law of erosion and sediment yield. The results show that there are three types of sediment concentration change over time, flat, unimodal and multimodal. The relationship between runoff time and rainfall intensity, sediment yield and rainfall intensity and slope are power function-dependent. Runoff velocity and depth are related exponentially with rainfall intensity. Between runoff and rainfall intensity, sediment yield and runoff Linearly related.