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零点小说网 > 科幻小说 > 清穿之抱紧四爷大腿 > 正文 第79章 第79章 铁石心肠?投石问路?

正文 第79章 第79章 铁石心肠?投石问路?(第3页/共3页)

道……”

他皱眉轻叹:“每年春汛各地河水泛滥,严重时淹没农田村庄无数,村民流离失所实在让人触目惊心。就拿永定河来说,朝廷花费巨资派官员修缮河堤,数年时间才有些见效,但我跟父皇出巡之时,途经永定河仍发现部分河堤质量并不达标。”

胤禛看向叶林:“若用此物修建堤坝河道,能否有所不同?”

叶林沉吟片刻,虽说现代钢筋混凝土连几千米的大坝都可修,但现在毕竟只是土水泥,自己又不懂治河,这种大事还是谨慎些的好,于是回道:“学生虽查阅些许资料,但对河道治理只能说略有了解,不敢妄言,若要在河道工程上使用,需治河之人多方实验才能做准。”

胤禛宽慰一笑:“那是自然。治河之难,不下于移山倒海,我看了皇阿玛派人治河十几一十多年的策略,依旧不敢说懂。但你毕竟是研制之人,对此物最是了解,有什么想法你姑且一说,我姑且一听,不必忧心。我之后定然还会找人慢慢实验。”

叶林见胤禛这么说,也便少了几分顾虑,畅所欲言道:“学生愚见,河道治理确非人力能完全改变。只能就手边已有的资源,尽力缓解。”

毕竟到了现代,科技无比发达,国家投入千亿修建水利工程,黄河仍旧是像一条桀骜不驯的巨龙,沉积泥沙日渐增多,部分地区甚至成了悬河。目前这个年代,能做的就太少了,但有了水泥修建堤坝总是要坚实的多。

“学生认为治河或堵、或疏、或固水土。如要疏通,则需在河段各处考察合适位置挖出支流河道,以水泥板做成闸口堤坝,待河水水位较高位时适当开闸放水,水位回落后则关闸。此法需因地制宜,在合适的位置开出支流才有效。位置好了,说不定还可以引水助农、灌溉庄稼。”

胤禛边听边看,越听眼中光芒越盛,又将几块成品捏在手中来回翻看。

“若要堵,则在可能淹没危及农田,村庄的河道口用水泥混凝土加高两侧堤坝,以保在水位高时不会决堤。混凝土中可加入竹条以增加抗压性,减少其断裂的可能。若能用钢筋铁条替代,自然最好,但成本过高,不太现实,用竹条也能凑合。”

此时胤禛已站起身来,一只手背在身后,慢慢踱着步子:“先生所说,句句切中要害!名为水泥,却又防水之能,果然是建造堤坝合适的材料。”

叶林心道,那可不是,现代水泥的作用太大了,高楼大厦、平缓道路、河流堤坝,哪个不是钢筋水泥的功劳?农户家里的蓄水池,发酵池也都是水泥做的。

“最后则是稳固水土,河水泛滥究其原因在于上游草木植被缺乏,水土不固。因此河水中往往带有大量泥沙流入下游,泥沙沉积在河道,日月累积之下,河道逐渐提高,而两侧堤坝高度并未随之增加,因此河水容易泛滥决堤,甚至过几年之后因河道过高,则河流改道而行。”

“而村民为着取水方便,往往在河流附近开垦农田、聚集村落,河水泛滥或改道则冲毁大量农田,使得村民流离失所,民不聊生。”

胤禛想到这段时间接到的消息,顿时心情有些沉重了起来,不知皇阿玛什么时候收到的消息,又打算如何应对?  https://www.3zmm.net/files/article/html/18161/18161531/5329882.html  www.3zmm.net。三掌门手机版阅读网址:m.3zmm.net 『加入书签,方便阅读』

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