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一秒记住【笔趣阁】
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    模型最后的组装和调试,是在水井胡同王家小院那间还算宽敞的东厢房里完成的。
    当最后一块模拟堤岸的的材料被常善德小心翼翼地在河岸边固定妥帖,这个耗费了三人近一个月心血的水利模型,终于完整地呈现在众人面前。
    整体长约六尺,宽两尺有余,占据了屋内大半张长条案。
    沙盘上山川起伏,丘陵叠嶂,是用不同颜色的黏土精心塑形成,再涂上青绿赭石等矿物颜料,虽为微缩,却自有一股山河气势。
    中间那道蜿蜒的主河道,河床用粗细不一的沙砾铺就,模拟出深浅变化。两岸的缕堤、遥堤、格堤等防洪设施一应俱全,虽是微缩,但结构清晰,甚至能看清堤坝上模拟的夯土纹理。
    最精巧处在于模型上方悬设的一个可控制流速流量的木质水箱,一侧连着个小小的手柄。一旦摇动手柄放水,便能清晰直观地演示出“束水”与任由河水漫流两种状态下,水流速度、泥沙冲刷与沉积的显著差异。
    “成了”,常善德直起腰,长长舒了一口气,用袖子擦了擦额角的细汗。他脸上带着连日熬夜的憔悴,但那双专注的眼睛里却透露着一股久违的满足感。
    王明远站在一旁,目光缓缓扫过模型的每一处细节,心中亦是激荡。这不仅是他们心血,更是他脑海中的土木水利知识与此世现实结合的一次成功尝试。
    他看向常善德,由衷赞道:“善德兄巧手,鬼斧神工。若无兄台,此物断难至此境界。”
    陈香没说话,只是默默上前,伸出修长的手指,轻轻拂过模拟河床上几处用极细朱砂标注的、代表历史决口位置的点,又检查了一下连接水箱的细竹管接口是否严密,然后才微微颔首,表示认可。
    “三叔!常叔!陈香哥!快放水试试!再试一次给我和笑盈瞧瞧!”早就候在一旁、心痒难耐的狗娃忍不住嚷嚷起来,黑红的脸上满是兴奋。
    他身旁站着常笑盈,小姑娘今日穿着一身半新的水绿衫子,眼睛瞪得溜圆,紧紧盯着那神奇的沙盘,脸上满是好奇和期待。
    这开始组装的半个月以来,狗娃和常笑盈混得极熟。常善德每晚来王家组装模型,在征得王明远的同意后,常笑盈有时做完功课,便会过来瞧瞧父亲,顺便也能吃到狗娃变着花样做的美味宵夜。
    狗娃那手出神入化的厨艺,早已彻底征服了小姑娘的胃,连带着看这个当初在学堂跟她吵架的“大个子同窗”也顺眼了许多。两人一个负责后勤,一个安静围观,偶尔交流几句,倒是相处融洽。
    “好,那就再演示一次。”王明远笑了笑,对常善德示意。常善德深吸一口气,走到模型一端,又演示了一遍,陈香则在一旁继续记录着数据,看看是否哪处还需要调整。
    虽然已不知看了多少次,但常善德眼中仍难掩惊叹:“巧夺天工,真是巧夺天工……明远兄此法,实乃治河良策,若真能施行,不知能活多少黎民百姓,省去多少河工修缮的银子!”他看向王明远的眼神,充满了敬佩。
    陈香也轻轻“嗯”了一声,补充道:“数据再次吻合。据此模型演示,此段若行此法,年均淤积量可降七成有余,若遇寻常汛情,基本很难再有河流改道或决堤风险。”
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