国内英语资讯:Large U-shaped tunneling shield completes maiden excavation
<p><span word="XI">XI</span>'<span word="AN">AN</span>, <span word="Jan">Jan</span>. 26-- <span word="A">A</span> <span word="large">large</span> <span word="U">U</span>-<span word="shaped">shaped</span> <span word="tunneling">tunneling</span> <span word="shield">shield</span> <span word="completed">completed</span> <span word="excavation">excavation</span> <span word="of">of</span> <span word="a">a</span> <span word="railway">railway</span> <span word="tunnel">tunnel</span> <span word="in">in</span> <span word="northwest">northwest</span> <span word="China">China</span>'<span word="s">s</span> <span word="Shaanxi">Shaanxi</span> <span word="Province">Province</span> <span word="Friday">Friday</span>.</p><p><span word="The">The</span> <span word="U">U</span>-<span word="shaped">shaped</span> <span word="machine">machine</span>, 10.95 <span word="meters">meters</span> <span word="high">high</span>, 11.9 <span word="meters">meters</span> <span word="wide">wide</span> <span word="and">and</span> 110 <span word="meters">meters</span> <span word="in">in</span> <span word="length">length</span>, <span word="is">is</span> <span word="an">an</span> <span word="improvement">improvement</span> <span word="on">on</span> <span word="the">the</span> <span word="traditional">traditional</span> <span word="round">round</span> <span word="tunnel">tunnel</span> <span word="boring">boring</span> <span word="machine">machine</span>. <span word="Its">Its</span> <span word="shape">shape</span> <span word="and">and</span> <span word="design">design</span> <span word="were">were</span> <span word="customized">customized</span> <span word="for">for</span> <span word="the">the</span> <span word="construction">construction</span> <span word="of">of</span> <span word="Baicheng">Baicheng</span> <span word="Tunnel">Tunnel</span> <span word="on">on</span> <span word="the">the</span> <span word="Loess">Loess</span> <span word="Plateau">Plateau</span>, <span word="where">where</span> <span word="the">the</span> <span word="soil">soil</span> <span word="is">is</span> <span word="powdery">powdery</span> <span word="and">and</span> <span word="dry">dry</span>.</p><p><span word="It">It</span> <span word="is">is</span> <span word="the">the</span> <span word="first">first</span> <span word="U">U</span>-<span word="shaped">shaped</span> <span word="tunneling">tunneling</span> <span word="shield">shield</span> <span word="of">of</span> <span word="such">such</span> <span word="big">big</span> <span word="size">size</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span>, <span word="according">according</span> <span word="to">to</span> <span word="China">China</span> <span word="Tiesiju">Tiesiju</span> <span word="Civil">Civil</span> <span word="Engineering">Engineering</span> <span word="Group">Group</span>, <span word="the">the</span> <span word="contractor">contractor</span>.</p><p><span word="The">The</span> <span word="machine">machine</span> <span word="began">began</span> <span word="work">work</span> <span word="on">on</span> <span word="the">the</span> 3.3-<span word="kilometer">kilometer</span> <span word="Baicheng">Baicheng</span> <span word="Tunnel">Tunnel</span> <span word="in">in</span> <span word="November">November</span> 2016.</p><p><span word="The">The</span> <span word="machine">machine</span> <span word="significantly">significantly</span> <span word="reduced">reduced</span> <span word="the">the</span> <span word="excavation">excavation</span> <span word="time">time</span> <span word="and">and</span> <span word="engineering">engineering</span> <span word="costs">costs</span> <span word="compared">compared</span> <span word="with">with</span> <span word="round">round</span> <span word="tunnel">tunnel</span> <span word="boring">boring</span> <span word="machine">machine</span>.</p><p><span word="Baicheng">Baicheng</span> <span word="Tunnel">Tunnel</span> <span word="is">is</span> <span word="part">part</span> <span word="of">of</span> <span word="the">the</span> <span word="Menghua">Menghua</span> <span word="Railway">Railway</span>, <span word="a">a</span> <span word="coal">coal</span> <span word="transport">transport</span> <span word="route">route</span> <span word="linking">linking</span> <span word="Inner">Inner</span> <span word="Mongolia">Mongolia</span> <span word="with">with</span> <span word="Jiangxi">Jiangxi</span> <span word="Province">Province</span>.</p>
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