第839章 蒿目黄尘顾世事(中)
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第839章蒿目黄尘顾世事(中)
给远在京城的章惇写了一封信去,韩冈便毫不在意的将吕惠卿希望用来展示自己才干的《手实法》抛在脑后。更多小说ltxs520.com在一天热过一天的元丰元年的初夏,他把自己大部分的精力都放在了襄汉漕运之上。
半个月的时间中,汝州和唐州之间的漕运道路,韩冈来来回回跑了四趟之多。从正在疏浚中的水道,到穿越方城垭口的轨道地基,他都仔仔细细的往返查看了几遍。都转运使如此上心,下面的官吏乃至厢军的官兵当然也不敢轻忽视之,
到了快六月的时候,工匠和材料陆续抵达工程现场。
筑路的工匠分别来自京城和徐州,总共二十多位。其中大工六人,每一位都拥有丰富的经验,在开始修建轨道前,分别都有着常年修造宫舍、桥梁、道路、堤坝的经历,几年来又不停的修建轨道,可以说是国中能拿得出手的最好的一班人马。
筑路的木料主要来自于南方,做轨道的硬木和做枕木的软木,经由汉水、泌水和堵水,运抵方城山下的木作中。皆是从江陵的船场运出来,已经经过了几年的晾晒,切割处理之后,就能立刻使用,不用担心新鲜木头脱水后的干缩。
而方城垭口北面,沿着水路而来的还有一船船的作为轨道路基的矿渣和卵石,当然,还有上万斤的铁料。虽说方城山附近没有冶铁的矿渣,也缺少卵石,但千里迢迢的从京畿将这些沉重的原材料运来,更多的还是想测试一下方城山北麓到蔡河的漕运是否畅通运行。
除去已经准备动工的堰坝,年底之前襄汉漕运便能初步打通。剩下的就是能运多少的问题。同样的一条道路,如果调度指挥出色,单位时间的运输量翻个一两番,甚至上升一个数量级都是有可能的。
当然,韩冈不会指望这个时代的运输调度,能比得上后世的专业人才,但即将为此而设立的发运司,韩冈期望他们至少能有六路发运司和三门白波发运司的平均水准。这事现在来想虽说是早了一点,但早一天练上,便多一天经验。韩冈只想看看实验的结果。
结果当然很完美。事实证明百年前在方城山山南山北的开凿出来的漕运通道至今依然能够使用,指挥调度的官员也是十分出色。不过卸货的地点离着方城山有些远,接近垭口的两段都要再疏浚一番方能使用,而在计划中,更是要通过堰坝提升水位并设置船闸,以连通深凿后的垭口渠道。就是因为此事,当设堰提水的方案敲定之后,暂时用来连接方城山南北的轨道便不得不加长了三十余里。
一旦堰坝提升了水位,之前的疏浚河道就是无用功。而相比起疏浚的工程量和对时间的延误,还是修建轨道更简单一点。不过这样一来,就多了一桩麻烦——修桥。
方城垭口前后也是有河流的,南面的是堵水的支流,北面的则是沙河的支流。如果襄汉漕运的中转点能向上游移动,可以避过这些支流,但眼下的情况,却必须设桥跨过去。。
总共四条溪流,每一条都不宽,平时最宽的一条也就四五丈而已。以此时的桥梁建筑水平来说,可算得上是轻而易举。但每隔几年,方城山一带往往就会有一次雨量偏大引发洪水的年份,百年前漕渠开凿失败,也有沙河堰坝被洪水冲垮的因素在,要怎样避免跨河的桥梁被冲毁,也是一桩难题。
“要跨过这条三里溪,还是设石桥比较好。方城山不缺石头。”李诫在溪边对来巡视的韩冈和沈括说着自己的意见,“木桥要防洪,桥拱必须要抬高,可抬得过高,车马难行,换成是石桥就方便多了,也坚固得多。可以赵州桥样式为范,设敞肩石拱,一大拱挑四小拱,跨过河道的行洪区域,桥拱弯曲,桥面平缓,正好适合轨道通行。”
“赵州桥的样式也记得?”韩冈有几分惊喜。
“石拱桥多半大同小异,”李诫很有自信的说道,将石拱桥如何修造,一条条的说给韩冈和沈括听。
韩冈连声赞许。李诫对他来说算是一个惊喜。他在建筑营造上的才能不仅让韩冈为之激赏,也让沈括赞叹良久。
“野有遗贤……”沈括叹了一句,又觉得这个说法不太合适,“难得人才,竟遗珠于外。”
李诫闻言连忙谦虚:“学生自幼不喜学,唯有工匠之事稍有心得。”
韩冈冷笑一声:“世间只重诗词文章。可经世济用之材,岂是区区章句能衡量得了的。”
李诫又为韩冈的夸奖而自谦了几句,聊了片刻,便向韩冈、沈括辞行,他还有事情要去做。
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