第644章 钢与火
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第644章钢与火(第1/2页)
开远门外,一片临时平整出的场地上,五十根钢轨在晨光中一字排开。
枕木是连夜从终南山运来的硬木,浸过桐油,敲入道钉时发出沉闷的笃笃声。
三百名工部匠人挥汗如雨,号子声与蒸汽机的嘶鸣混成一片——那是从广州船厂调来的小型调车机车“先锋号”,正被数十头牛缓缓拖拽至轨端。
李易站在临时搭建的观礼台上,身后是李世民特命前来观礼的六部尚书、诸卫大将军,以及数十名京中勋贵。
更远处,闻讯而来的长安百姓挤满了土坡,踮脚张望。
“殿下,一切就绪。”宇文恺快步上台,低声禀报,“三百丈轨道已铺毕,‘先锋号’挂载了十辆平板车,每车装粮二百石、火铳百支、弹药五十箱,总重逾二十万斤。按测算,机车满载可牵引十五辆,今日只挂十辆,留有余力。”
李易微微颔首,目光扫过台下神色各异的朝臣。户部尚书戴胄眉头紧锁,手指无意识地捻着胡须。
兵部尚书侯君集则双目放光,死死盯着那台喷吐白雾的钢铁怪物。
几位言官打扮的文臣交头接耳,脸上写满怀疑。
“开始吧。”
旗官挥动红旗。
蒸汽机车的烟囱猛然喷出浓烟,汽笛长鸣——那是格物院特制的铜笛,声震四野。
活塞连杆开始往复运动,驱动轮缓缓转动,与钢轨摩擦发出刺耳的吱嘎声。
“动了!动了!”人群爆发出惊呼。
重载的列车开始加速,起初缓慢,随后越来越快。
钢铁巨兽轰鸣着向前推进,车轮碾过轨缝时发出有节奏的铿锵声,平板车上的货物捆扎牢固,纹丝不动。
三百丈的距离,不过片刻即至终点。
机车开始制动,闸瓦与车轮摩擦溅出火星,在钢轨上拖出两道浅痕。
从启动到停止,用时不到一盏茶。
场中寂静了一瞬,随即爆发出更大的喧哗。
“载重二十万斤,行三百丈,用时不及弓箭射出百步!”侯君集率先喝彩,“若以此运兵,三日抵凉州绝非虚言!”
戴胄却上前一步,向李易拱手:“殿下,老臣有一问:此三百丈平坦之地,机车自可畅行。然陇山崎岖,渭水滔滔,若遇陡坡、深谷,机车可能攀越?遇大河,可能飞渡?”
“戴尚书问得好。”李易早有准备,指向轨道尽头,“请诸位移步。”
众人随他走到终点处,那里已竖起一块木牌,上书几行朱字:
“本次试验数据:轨重每丈四百斤,枕木间距二尺五寸,道砟层厚八寸。机车牵引力三千斤,时速最高十五里,制动距离五十丈。耗煤每里八十斤,耗水二百斤。”
李易接过宇文恺递来的铁尺,敲了敲钢轨:“此轨为工字形,重心低,抗弯强。格物院测算过,最大可承每丈四千斤荷载,足以承载更重之机车。至于陡坡——”
他转身指向西方:“陇山段铁路,将采用‘之’字形展线、隧道穿山、高架越谷。坡度控制在千分之二十五以内,以复式蒸汽机车之牵引力,足可攀爬。戴尚书所虑之河,已有方案:渭水大桥将采用钢桁架结构,桥墩深植岩层,桥面铺设双轨,可并行两列列车。”
“造价几何?”戴胄追问。
“长安至岐州段,全长四百二十里,预算一百五十万贯。”李易坦然道,“其中征地补偿二十万贯,工料人工八十万贯,桥梁隧道三十万贯,机车车辆二十万贯。此乃首段,后续路段因经验积累、工法成熟,造价可降两成。”
“一百五十万贯……”戴胄倒吸一口凉气,“近乎国库岁入一成!”
“戴尚书可曾算过,此路若成,每年可省下多少漕运损耗、驿马开支?”李易反问,“关中粮输陇右,陆路运费每石高达二百文,损耗三成;水路绕道,耗时月余。铁路运粮,每石运费不过三十文,损耗不足一成,三日即达。仅军粮一项,年省不下五十万贯。若算上商货流通、税关增收,五年即可回本。”
他顿了顿,声音提高:“更不必说,凉州告急时,大军朝发夕至;北地有警时,煤铁旬日南下。此路非但非耗财之道,实乃生财之途、强兵之径、安邦之策!”
话音落,场中静默。
忽然,一直沉默的工部尚书杜如晦开口:“老臣有一请:可否让老夫登车一乘?”
李易展颜:“杜相请。”
不仅杜如晦,侯君集、戴胄乃至几位言官,都登上了平板车。
(本章未完,请点击下一页继续阅读)第644章钢与火(第2/2页)
“先锋号”再次启动,这次只挂了五辆车,速度更快。秋风扑面,景物飞掠,钢铁的韵律透过车板传来,沉稳有力。
杜如晦扶着车栏,白发在风中飞扬。
他闭目片刻,睁眼时目光灼灼:“
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