干旱区生态环境知识资源中心(Arid): 山前冲积扇蓄洪入灌坎儿井水源保护方法研究

Arid

	山前冲积扇蓄洪入灌坎儿井水源保护方法研究
其他题名	Research on Water Source Protection of Karez Wells Using Flood Irrigation From Piedmont Alluvial Fan
	郑艳琼; 张爱军; 韩帅
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2018
卷号	25 期号:3 页码:366-372
中文摘要	新疆吐鲁番盆地的坎儿井是我国宝贵的非物质文化遗产,且对吐鲁番绿洲生态的存在与发展具有不可替代的作用。近年来随着大量机电井的使用,区域地下水位持续下降,致使坎儿井出水流量减少甚至干涸。吐鲁番盆地北侧天山山脉的年降雨量可达300~400 mm,该降雨除一部分通过多条河流排出外,在山前冲积扇上也会造成一定规模的洪水,给盆地边沿地区带来一定的威胁。通过分析吐鲁番盆地基本情况、坎儿井现状和山前冲积扇蓄洪入灌的自然条件,提出一种山前冲积扇蓄洪入灌坎儿井水源保护方法,并采用数值模拟对此方法进行了研究。山前冲积扇蓄洪入灌坎儿井水源保护方法,即在冲积扇修筑拦洪坝的方式,拦蓄该部分洪水,一方面起到防洪效果,另一重要方面就是补给地下水,抬升地下水位,从而增加该区域的坎儿井的出水量。研究表明:该方法可以大幅提升地下水位,增加坎儿井的出水量,甚至可使得已经干涸的坎儿井重新出水,是经济可行的一种保护坎儿井的方法。
英文摘要	Karez well system in Turfan Basin of Xinjiang is a precious intangible cultural heritage of China. It also plays an irreplaceable role in the conservation and development of oasis ecosystem in Turfan Basin. Recently,the continuous declination of regional groundwater level results in the decrease of water flow or even dry-up of Karez wells due to the extensive use of electro-mechanical wells. Meanwhile,the annual precipitation of north Turfan Basin near Tianshan Mountains is 400~600 mm. Except for a small proportion streams out through rivers,the flood forming in the piedmont alluvial fan often creates threats to nearby edge areas of Turfan Basin. Thus,we present new method to protect the water source of Karez well system by analyzing the basic conditions of Turfan Basin and Karez wells,as well as the natural irrigation condition of piedmont alluvial fan. The main idea is to build retaining dams in piedmont alluvial fan to preserve the flood. The dams will control the flood and improve groundwater level. In the meantime,the water flow in Karez well system will also increase. Numerical simulations are used to investigate the potential benefits. The simulation results show that the proposed method could significantly elevate the groundwater level and increase the total amount of water flow in Karez well system. The dried-up wells can even be restored. It is proved that the proposed method is an economically feasible and applicable method to protect water source of Karez wells.
中文关键词	绿洲生态 ; 坎儿井 ; 蓄洪入灌 ; 非饱和土渗流
英文关键词	oasis ecosystem Karez well flood irrigation unsaturated soil seepage
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:6200452
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238351
作者单位	西北农林科技大学水利与建筑工程学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	郑艳琼,张爱军,韩帅. 山前冲积扇蓄洪入灌坎儿井水源保护方法研究[J]. 西北农林科技大学,2018,25(3):366-372.
APA	郑艳琼,张爱军,&韩帅.(2018).山前冲积扇蓄洪入灌坎儿井水源保护方法研究.水土保持研究,25(3),366-372.
MLA	郑艳琼,et al."山前冲积扇蓄洪入灌坎儿井水源保护方法研究".水土保持研究 25.3(2018):366-372.