干旱区生态环境知识资源中心(Arid): 干旱、半干旱区平原水库对坝后盐渍化的影响①

Arid

	干旱、半干旱区平原水库对坝后盐渍化的影响①
其他题名	On the Effects of Reservoirs in Plain Area to Soil Salinization in Arid and Semi-arid Area
	毛海涛 1; 樊哲超 1; 何华祥 2; 邵东国 3; 王晓菊 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2016
卷号	33 期号:1 页码:74-79
中文摘要	为了农业灌溉,干旱、半干旱区修建大量的平原水库,坝基多位于第四纪松散深厚覆盖层上,深厚覆盖层地基上平原水库的渗漏引起坝后地下水位抬升,造成水库下游大面积土地盐渍化,使许多土地减产甚至弃耕。通过对代表性平原水库的监测,分析水库对坝后地下水临界水位的影响程度,进而分析防渗措施的型式。利用有限元计算了深厚覆盖层透水坝基垂直防渗墙和水平铺盖时,坝基渗流量与防渗体尺寸的关系,并联合坝后排水体进行综合控制地下水临界水位,推导出控制地下水临界水位的水库防渗体尺寸计算公式。结合工程实例计算表明,选择合理的防渗体型式并结合排渗体联合控渗,可以从源头上控制坝基的渗漏量,使坝后地下水位控制在临界水位以下,防治坝后土壤的次生盐渍化问题。
英文摘要	There was a lot of plain reservoirs in northwest of arid and semi-arid area for agricultural irrigation, needless to say,the plain reservoir played an irreplaceable role in the national production and daily life,but there were also many urgent ecological environment problems need to solve. Leakage problem of the plain reservoir uplifted the underground water level behind the dam,a large area of land was salinization,which led to the output reduction and abandoned cultivation severely. This paper focus on the perspective seepage of reservoir using the finite element model to calculate the relationship between dam foundation seepage discharge and impervious body size of the permeable dam foundation with vertical anti-seepage wall and horizontal bedding. The critical groundwater level was controlled comprehensively with the combination of the drainage body and the impervious body size calculation formula was derived for controlling the critical groundwater level of reservoir. Combined with the engineering example of calculation shows that,as long as the choice of reasonable impervious body type and water seepage drainage body,leakage can be completely controlled from the foundation head,the dam underground water level could be controlled at the critical level,secondary salinization prevention of soil dam could be conducted gradually.
中文关键词	平原水库 ; 土地盐渍化 ; 防渗体 ; 排渗体 ; 地下临界水位
英文关键词	plain reservoir land salinization seepage proofing body seepage drainage body critical underground water level
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5623653
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234288
作者单位	1.重庆三峡学院土木工程学院, 重庆 404100, 中国; 2.重庆三峡水利电力集团股份有限公司, 重庆 404100, 中国; 3.武汉大学水利水电学院, 武汉, 湖北 430072, 中国
推荐引用方式 GB/T 7714	毛海涛,樊哲超,何华祥,等. 干旱、半干旱区平原水库对坝后盐渍化的影响①[J],2016,33(1):74-79.
APA	毛海涛,樊哲超,何华祥,邵东国,&王晓菊.(2016).干旱、半干旱区平原水库对坝后盐渍化的影响①.干旱区研究,33(1),74-79.
MLA	毛海涛,et al."干旱、半干旱区平原水库对坝后盐渍化的影响①".干旱区研究 33.1(2016):74-79.