土木工程專業(yè)英語演講盾構法施工ppt課件

1、土木工程專業(yè)英語,Shield Tunneling Method盾構法施工,Shield tunneling was developed as a method of digging tunnels through the soft ground below riversThe story of Brunel hitting upon the idea when he saw a ship worm boring holes through the bottom of a shipHe was granted a patent in 1818，and commenced constructin

2、g the Thames Tunnel in London in 1823,盾構隧道發(fā)展成為通過河底部軟土地層挖掘隧道的方法，當布魯內爾看到一個船舶蠕蟲在船的底部鉆通一個小洞的時候，他得到啟發(fā)想到這個方法。在1818年他被授予專利，1823年在倫敦的泰晤士河隧道動工興建,他的基本理念是用千斤頂的支撐通過軟土地層時安裝一個剛性的框架，用此阻止土的滑落坍塌，并且在框架內部施工隧道的結構。通過重復頂的支撐，構件支撐結構，然后隧道繼續(xù)向前推進,His basic concept was to press a rigid frame forward through soft ground with ja

3、cks,thus preventing the ground from collapsing,and build the tunnel structure with in the frames.By repeating the process of jacking then constructing the support structure,the tunnel would move forward,The shield used for the Thames Tunnel was rectangular in cross sectionA later redesign，with a cir

4、cular cross section，was used by Greathead to construct the Tower Subway in 1869Cast steel segments，backfilling，and injection were all used by Greathead in his shield work, so his was the prototype of todays shield,用于泰晤士河隧道的盾構截面是矩形。后來設計為一個圓形截面，這種圓形斷面被格瑞特用于1869年的倫敦塔地鐵，鑄造鋼段，回填，并注漿，在格瑞特的盾構設計中都有運用，所以他的設計

5、是今天盾構的原型,Thereafter，no great advances were seen in the technology until the 1960s；this plateau lasted for about a century until a sudden quantum leap，led mainly by JapanHaving been behind in the early1960s，Japan was making rapid strides of its own by the latter half of the decadeWith increasing dema

6、nd for tunnels and the need to overcome hostile conditions，research related to shield development became more active,此后，直到20世紀60年代盾構技術都沒有很大的發(fā)展和進步，這種水平持續(xù)了約一個世紀，直到技術的飛躍，20世紀60年代早期，主要由日本領導的盾構技術飛躍，60年代的后五年，日本自身的快速進步，隨著隧道需求的增加和不良條件的克服的需要，有關盾構發(fā)展的研究變的積極而又動力,In 1963，a mechanical shield was used for the cons

7、truction of a water main at Osaka .In1964，slurry was used to stabilize a tunnel face，although pipe jack excavation method was adoptedIn1969，a slurry shield73 m in diameter was used to complete a tunnel for the Keiyo Line underneath the Morigasaki CanalThis shield diameter was a world record at the t

8、imeIn1972，an earth pressure shield was developed，marking Japans coming of age in the world of tunneling,1963年，在大阪興建水管建設采用了機械盾構，1964年，泥漿被用來穩(wěn)定掌子面，雖然管插孔挖掘的方法已經采用。1969年，直徑為7.3米泥水盾構被用來完成森崎運河線面的京葉線隧道。這個盾構直徑是當時的世界紀錄。1972年土壓盾構的開發(fā)，標志著世界盾構日本時代的來臨,Japanese shield tunneling technology gained an excellent reputa

9、tion during the 1980sThe overseas use of Japanese tunneling technology is perhaps best exemplified by work for the Docklands Light Railway in London，when a Japanese contractor carried out shield tunneling work underneath the River ThamesThus，technology that evolved in Japan was returned right to its

10、 birthplace under the Thames in London,20世紀80年代，日本盾構隧道技術贏得了極好的聲譽。倫敦的港區(qū)輕軌線也許是日本隧道技術的海外應用最好的例證。當日本承包商在泰晤士河展開盾構隧道工作時。因此，傳入日本的盾構隧道技術，返回到它的誕生地倫敦,But with urban facilities in our major cities still needing considerable improvementthere will be future demand for tunnel excavation under harsh conditionsNow that the Law Concerning Special Measures for Public Use of Spaces Deep under Ground is in place，we have a regulated system for using our underground spaceThis will surely lead to further improvements and refinements to shield tunneling，includin