第二十八章 封堵决口
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三个多小时后,就在新堤在沱江洪峰中摇摇欲坠的时候,缺口的沱江大堤两侧打进大堤里的加固桩数量已经形成了比较稳定的脚手架结构,已经可以往大堤决口的位置进行打桩了。
可是往决口的位置打桩可就不是那么容易的了。决口位置的大堤基础出现了塌方,底层已经呈现了酥化迹象,而且都沉在水下几米深的位置,在这样的地方打桩也根本立不住啊!
另外,如果只是从决口两端往决口中间打桩,然后再用沙袋填充的话,这种封堵决口的方式倒不是不可以,只是这种封堵方式的进度实在是快不起来。那边加固加厚新堤的工程虽然在继续,但新堤的基础和质量肯定不能和沱江大堤相比,小规模的渗水其实一直在发生着。这种新堤本来就是作为临时救急的作用存在着的,天知道它到底能够撑到几时,给人们赢得多少时间。
就在人们心急如焚,却又没有什么好办法的时候,两条装载了封堵决口急需材料的吊装船驶近了决口位置。随船来的不仅有大批材料,还有一个抗洪指挥部的专家组,带队的是一位中将和一位少将。
两条船的长度都在五六十米,算不得什么大船。但这个时候到来的这两条船,不但送来了急需要的封堵决口的材料,更为决口的封堵增添了很多种可以选择的封堵“战术”。
为了安全起见,两条船都在距离决口大堤位置有一百来米远的江面上停也下来,没有盲目的往决口位置跟前凑,这实际上是非常明智的作法。
现在人们都不知道大堤塌方的水下情形,盲目靠近不是让这两条船意外搁浅,就是撞上水下的大堤坝体,弄不好对大堤本身又是一种损伤。再严重一点的话,如果这两条船贴得太近,弄不好会从大坝的决口位置冲进新堤里面。脆弱的新堤可挡不住这样的一个大家伙的税冲击,严重的话恐怕一下就会撞毁了大家的所有设想。
两条船下锚停好,船上的中将带着一干抗洪专家用小船渡到了大堤上,知袁团长、*程师他们汇合了。两方面见面根本顾不上寒喧,马上就交流起封堵大堤决口的方案来了。
双方都是有经验的专业人士,沟通起来也就相当的迅速和高效。*程师这边把大堤决口的情况进行了汇报,新来的几位专家互相参详着,很快就研究出了一套更严谨和更合理的封堵计划。
很快,两条船和大堤之间拉起了数道长长的绳索。一些战士拉着绳索,脚下踩着船把更多的战士渡了过去。等那两条吊装船上的战士大约有一个排左右的时候,那船上的水手便下到了小船里,开始对决口位置的大堤进行探深测量。此时,其他的战士们还在干着自己的事情,把决口两端的脚手架搭得更牢固,同时铺上便地行动木板。
等水手把水下的情况探明以后,两条吊装船相继起锚,然后开始在水手的指挥下,由大堤上的战士们和两条吊装船上的战士们慢慢将两条吊装船拉近大堤决口位置。
最后,经过半个小时左右的努力,两条吊装船都停在了距离决口不足二十米的江面上。用庞大的船身替大堤决口位置形成了一道阻挡,降低了洪峰对决口位置大堤的影响。同时也从江面上形成了一个新的工作面。
紧接着,吊装船上的塔吊开动了起来,陆续把船上装载的材料或是吊到大堤上,或是直接扔到沱江大堤的堤基上。那种装着大石头的铁笼,被扔到远离决口位置的江水里,算是对大堤的堤基进行加强。基后是那种装着沙袋的笼网,被扔到出现塌方的决口位置,一点一点把决口的位置缺损的高度给补齐。
由于此时新堤内的水和沱江水面已经基本持平,再加上两条吊装船的影响,因此已经没有大的洪峰会影响这些新沉下去的笼网了。这些大量的沙袋被扔了下去,呆会儿只要再打上桩,就会成为结实的固定大堤基础。
再接下来,就该战士们上场了。大家有的乘坐小舢舨来到江面上,有的沿着已经打好的桩基脚手架作业,开始了决口的合龙作业。
天黑下来了,不知不觉间,战士们已经在江面上奋斗了整整一个白天。
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