文档介绍：邢台县水土保持雨水集蓄利用探讨
【摘要】本文通过邢台县水资源现状及典型区的水土保持集蓄水利用情况分析,提出了雨水集蓄水利用的方法,论述了对解决山丘区缺水的效益。
【关键词】雨水资源;集水工程;生态治理模式;节水灌溉技术
the xing set county water and soil conservation rain water gather xu to make use of a study
kong yu—hong
(the xing bridge east area water in the set city duty bureauxingtaihebei054001)
【abstract】this text gather to retain water to make use of a circumstance analysis through the water and soil conservation of the resources present condition of the xing set county water and typical model area, put forward rain water to gather to retain water the method for make use of and discussed to the performance which solve hillock area water shortage.
【key words】rain water resources;gather water engineering;the ecosystem manage mode;stanza water irrigation technique
1. 水资源利用情况分析
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,50%、75%、95%,。降水量的区域分布不均匀,山区大于平原。、路罗为中心的650mm以上的多雨区,。降水量的年内分配集中。全年降水量75~80%集中在6~9月的汛期,而汛期降水量又主要集中在7月中、下旬至8月上、中旬的30天甚至几天之内,特别是一些大水年份,降水更加集中。降水量的年际变化很大。单站最大与最小年降水量之比,山区一般在5~9倍,平原一般在3~6倍。。平原多年平均水面蒸发量一般在1100~1200mm左右,而山区则为990~1100mm左右。县域内的干旱指数,~,~。
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(1)地表水资源情况:,径流量25706万m3,p=50%,径流量20561万m3;p=75%,径流量10794万m3,p=95%,径流量3084万m3。多年平均入境量为2409万m3,0%,75%和95%保证率入境量分别为1674万m3,723万m3和145万