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| 神东煤田原地面侵蚀产沙规律野外降雨试验 |
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李宏伟1, 王文龙1,2, 王贞3, 肖俊波1, 刘勇1, 李晓诚1
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| (1.西北农林科技大学 资源环境学院,陕西 杨凌 712100;2.中国科学院 水利部水土保持研究所土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌 712100;3.中国水电顾问集团 华东勘测设计研究院,杭州 310014) |
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| 摘要: |
| 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。 |
| 关键词: 神东煤田 原地面 野外降雨试验 径流量 产沙量 |
| DOI：10.11841/j.issn.1007-4333.2013.02.030 |
| 投稿时间：2012-05-31 |
| 基金项目:国家自然科学基金项目(40771127); 水利部公益性行业专项(201201048); 黄土高原土壤侵蚀与旱地农业国家重点实验室专项(10502-T1); 国家大学生创新性实验计划资助项目(西北农林科技大学2012年); 中国科学院西部行动计划项目(KZCX2-XB3-13) |
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| Effect of simulated rainfall experiments on soil erosion and sediment yield of the undisturbed lands in Shendong coalfield |
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LI Hong-wei1, WANG Wen-long1,2, WANG Zhen3, XIAO Jun-bo1, LIU Yong1, LI Xiao-cheng1
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| (1.College of Natural Resources and Environment,Northwest A & F University,Yangling 712100,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100,China;3.Hydrochina Huadong Engineering Corporation,Hangzhou 310014,China) |
| Abstract: |
| In order to measure and analyze runoff and sediment loads on undisturbed lands for estimation of increased sediment loads on a mine wastes as well as on disturbed land and unpaved roads,a field rainfall experiment in Shenfu Dongsheng coal field was conducted.Results indicated that the variations of sediment yield appeared in three types,that is,smooth,unimodal,and multimodal types.The relationships between runoff generation time and rainfall intensity,sediment yield and rainfall intensity and sediment yield and slope could be described with power function;the changes of runoff velocity and depth with rainfall intensity followed exponential function;and the runoff yield with rainfall intensity,sediment and runoff yield were accorded with linear relationship. |
| Key words: Shendong coalfield undisturbed lands field rainfall experiment runoff yield sediment yield |
