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第772章 具体规划2(1 / 2)

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根据我比较细致的查看,这两条溪流各自在申公城的南北两侧,两条溪流各自距申公城都没有超过三公里的距离,而耕地基本上是在溪流的两岸进行开垦,为方便取水,最远距离溪流不超过一到两公里的距离。

这样看来,这块耕地的宽度的总距离不超过五公里的宽度。

为了方便出行和劳作,而这些耕地又依托溪流向申公城东西两侧蔓延出去了五到六公里不等。也就是说这块耕地的总长度越有十到十一公里的距离。

而溪流走向是由西北方向流经申公城,而后在七八公里之外,逐渐开始汇入距离申公城的那条大河之中,与申公城形成了一个相对的角度。

也就是说,这里的地势,总体上西北方向略高,而东南方向略低。

依照这样的情况,那我们修建水渠的走向也将要按照这样的方式才能够让引入水通过水渠对耕地进行灌溉。

这样一来,我就要依托溪流修建四条主干渠,两条溪流分别旧件两条主干渠。考虑到南侧地势低,所以溪流南侧的干渠将紧挨着溪流南岸进行修建,而北侧的干渠则需要在耕地的最西侧前端,以夹角的方式将水渠修建到耕地的北侧,而后在耕地的北侧笔直而下,最终在耕地的北侧进行灌溉作业。

这样一来对于修建两条溪流北侧耕地的水渠工程就要相对增加不少。不过这也是没办法的事,毕竟,地势本就是北高南低,要是和南岸一样,将水渠修建在紧靠溪流的地方,工程是省了,但因为地势的原因,注定了引入水渠的水不可能对北岸的耕地灌溉不了。毕竟,水往低处流这个定律是不可能被更改的。

无奈,我也只能选择这种方式来规划北岸的水渠修建了。

除了从两条溪流中引水的这四条主干渠之外,我还必须分别在两条溪流的水网之内加入四到五条分渠,加起来总共就是在需要修建九到十条分渠。

这些分渠将会把溪流两岸延伸出去的耕地以每三百到四百米为间隔在划分成一个个区块。这样做的目的也是便于灌溉。

毕竟,你不可能指望一条水渠就能够灌溉长度有一公里多的耕地吧,总的要把这些耕地划分成三四百米长度,才有可能进行浇灌作业。

因为溪流两岸土质大多为沙性土壤,土质比较疏松,渗透性较强,水最多流到三四百米远的距离就会完全渗入地下。这样一来就必须要每隔三四百米的距离就需要另外修建一条水渠来完成灌溉作业,不然灌溉作业就是无用功了。

整个溪流的耕地长度在十公里左右,四条主干渠就是将近四十多公里的施工,再加上九条分渠,那又是九十公里的长度。当然分渠不管在宽度还是在深度都不可能和主干渠达到一样的标准,而我制定的两米宽,一米五深那是主干渠的标准。分渠宽度有一米到一米二左右就差不多了,深度能够达到一米左右就行,标准基本上要比主干渠减小一般。

这样一算,九十公里的长度减少一半,那就是四十五公里,再加上四条主干渠近五十公里的长度,总计加在一块那也是近百公里的大工程了,这个工程量不可谓不大。

但,我们参加开挖水渠工作的人力足有四万之巨!

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