第70章 河堤勘察·重设方案

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    第70章河堤勘察·重设方案(第1/2页)
    第二日,天刚蒙蒙亮。
    李画船就带着小梦,还有楚国工部的一众官员、工匠,出了郢都,直奔淮河而去。
    淮河两岸,满目疮痍。
    去年汛期的洪水,刚退下去没多久,岸边的田地,还满是淤泥,冲垮的房屋,东倒西歪地立在岸边,不少百姓,穿着破烂的衣服,在淤泥里翻找着能用的东西,面黄肌瘦,看着就让人心酸。
    工部的侍郎,站在李画船身侧,叹了口气,苦着脸道:“李大人,您也看到了。这淮河,年年闹洪水,每年汛期,都要冲垮几十个州县,淹死几万百姓,良田全被淹了,颗粒无收。我们工部,年年修堤,年年决口,实在是没办法了。”
    李画船没有说话,蹲下身,抓起一把岸边的泥土,捏了捏,又走到河边,看了看水流的方向,眉头紧锁。
    他沿着淮河,一路往西走,从郢都的淮河段,一直走到了上游的险段,走了整整一百多里路,沿途勘察地形、水流、泥沙情况,时不时地停下来,拿出纸笔,画下地形,标注上数据。
    楚国的工匠们,一开始还带着几分不服气,觉得李画船不过是个外来的泥腿子,就算是会造点器械,也未必懂修河堤。可看着他一路勘察,精准地说出每一段河堤的问题,甚至能算出水流的速度、泥沙的淤积量,一个个都惊呆了,脸上的不服气,渐渐变成了敬佩。
    他们修了一辈子河堤,都没见过这么厉害的人。不用仪器,只用眼睛看,用手量,就能精准地说出所有的数据,甚至能预判出,哪一段河堤,今年汛期一定会决口。
    一直走到傍晚,太阳快落山的时候,李画船才停了下来,站在一处被冲垮的河堤上,看着奔腾的淮河水,对着身边的工部官员道:“你们知道,这河堤,为什么年年修,年年决口吗?”
    工部的官员们,面面相觑,摇了摇头。
    “第一,”李画船伸出一根手指,声音沉稳,“你们修的河堤,太直了。淮河的水流,本来就急,直的河堤,没有缓冲,水流直接撞在河堤上,冲击力太大,就算是修得再厚,时间长了,也会被冲垮。”
    “第二,”他伸出第二根手指,“你们只修了主河堤,没有泄洪区。汛期洪水暴涨,水位超过河堤,没有地方泄洪,只能漫过河堤,冲垮堤坝。”
    “第三,”他伸出第三根手指,“你们用的材料不对。只用泥土和石头修堤,洪水一泡,就软了,一冲就垮。还有,河堤的根基太浅,根本扛不住洪水的冲刷。”
    他的话,一针见血,把淮河河堤年年决口的问题,说得清清楚楚。工部的官员们,一个个都愣住了,脸上满是羞愧,又满是敬佩。他们修了这么多年河堤,竟然连这些最根本的问题,都没看明白。
    “那…那李大人,我们该怎么修?”工部侍郎连忙上前一步,急切地问道,“求李大人指点!”
    李画船转过身,看着众人,沉声道:“我要重新设计方案,不修单道河堤,修三道堤坝,形成一个完整的防洪体系。”
    他蹲下身,用树枝在地上,画出了三道堤坝的示意图,对着众人解释道:“第一道,是主堤坝,也就是现在的河堤,要重新加固加高,根基要挖到地下三丈深,用糯米灰浆混合碎石、夯土浇筑,比现在的堤坝厚三倍,高两倍,能扛住百年一遇的大洪水。”
    “第二道,是副堤坝,在主堤坝的内侧,距离主堤坝两里地,修一道副堤坝,中间的区域,设为泄洪区。汛期洪水暴涨的时候,打开主堤坝的泄洪闸,把洪水引入泄洪区,既能缓解主堤坝的压力,也能蓄水,旱季的时候,用来灌溉农田。”
    “第三道,是护城堤,在各个州县的城外,再修一道护城堤,就算是主堤坝、副堤坝都被冲垮了,还有护城堤,能护住城池和百姓,不会再出现洪水进城,淹死无数百姓的事。”
    他一边画,一边解释,三道堤坝,环环相扣,不仅能防洪,还能蓄水灌溉,甚至能改善淮河的通航条件,一举多得。
    工部的官员和工匠们,围在一旁,看着地上的示意图,听着李画船的解释,一个个都惊呆了,眼睛里满是光芒。他们修了一辈子河堤,从来没想过,河堤还能这么修!这个方案,简直是神来之笔!若是真的能修成,淮河两岸的百姓,就再也不用受洪水之苦了!
    “李大人!您真是神人啊!”工部侍郎激动得声音都在发抖,对着李画船深深一揖,“我代表淮河两岸的百姓,谢过李大人!”
    周围的官员和工匠们,也纷纷对着李画船躬身行礼,眼里满是敬佩和感激。之前的那点不服气,早就烟消云散了。
    (本章未完,请点击下一页继续阅读)第70章河堤勘察·重设方案(第2/2页)
    李画船扶起他们,沉声道:“我不是什么神人,我只是个手艺人。修堤是为了百姓,不是为了我自己。大家
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