干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (6): 980-983.

• 水土资源 • 上一篇    下一篇

宁夏平罗盐碱地泥质和砂质排水渠道能耗率变化研究

范小黎1,2，王随继1，杜俊1,2，万书勤1   

  1. 1.中国科学院地理科学与资源研究所，中国科学院陆地水循环及地表过程重点试验室，北京 100101； 2.中国科学院研究生院，北京 100049
  • 收稿日期:2011-12-12 修回日期:2012-02-08 出版日期:2012-11-15 发布日期:2012-11-19
  • 作者简介:范小黎（1984-），男，湖北襄樊人，博士研究生，主要从事河流地貌与河道演变研究. E-mail: fanxl.10b@igsnrr.ac.cn
  • 基金资助:

    中国科学院西部行动计划项目（KZCX2-XB2-13）

Study on Stream Power of Muddy and Sandy Drainage Channels in SalineAlkaline Land in Pingluo County of Ningxia

FAN Xiao-li 1, 2, WANG Sui-ji 1, DU Jun 1, 2,  WAN Shu-qin 1   

  1. 1.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-12-12 Revised:2012-02-08 Published:2012-11-15 Online:2012-11-19

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摘要： 灌溉排水渠道在开发农田水利工程方面扮演着重要的角色，在防御涝渍灾害和土壤盐碱化等方面起着积极的作用。根据宁夏平罗西大滩地区以白僵土、沙土所铺设成的排水渠道的能耗率特点，采用水槽试验的方法，来分析不同土质排水渠道的稳定性及其侵蚀特征。结果表明：在给定的条件下，泥质排水渠道能耗率大大小于沙质排水渠道，并且能够很快降低能耗率，以达到河道的平衡状态，在排水方面具有相对的高效性，同时泥质渠道比沙质渠道具有更高的稳定性。所以，在宁夏平罗地区盐碱地开发及治理中，宜采用泥质排水渠道。

关键词: 泥质排水渠道, 沙质排水渠道, 能耗率, 盐碱地, 平罗县, 宁夏

Abstract: Irrigation and drainage channels play an important role in developing irrigation projects in farmland, and also an active role in controlling water logging and salinealkaline disasters. In this study, a flume experiment was carried out to analyze the gross and specific stream power of the drainage channels, and two channels in Pingluo County of Ningxia Hui Autonomous Region were separately paved with saline soil and sand. The stability and erosion of these drainage channels were analyzed based on the characteristics of stream power. The results showed that, under the given conditions, the gross stream power of the muddy drainage channel was much lower than that of the sandy one, and it could be quickly reduced to achieve a balance of the channel. The experiment also revealed that the stability of muddy channel was higher than that of the sandy one. Therefore, it is suggested to take muddy channel in developing and improving saline soil in Pingluo County.

Key words: muddy drainage channel, sandy drainage channel, gross stream power, saline soil, Pingluo County, Ningxia