Page 111 - 捷運技術 第42期
P. 111

捷運技術半年刊 第42 期                                             99





                新莊線（市區段）潛盾隧道穿越臺、高鐵隧道既有結構

                                                下方之成功案例




                                                          1
                                                ༗࿲ቜ c೻༸ڦ                2
                                                        摘 要

                   ၽ̏ઠ༶อ୿ᇞ׵ؒϪیԯ१ၾ׀ѽอ͛१ʘගdՉᆑ޷ᎆ༸ʈ೻̀඲Іᐄ༶ʕٙ
              ၽ᚛ၾуਗ਼ᐄ༶৷᚛ᎆ༸ഐ࿴ɨ˙ஷཀd˲ც߈൳݅Ϟή᚛ഐ࿴ɨ˙ʘʬ༸ኺɺኣ᜗d
              ܼ̍ʔ஝ۆʘஹᚃኣ᜗ʿڢஹᚃ׌ʘਿᅸ໊ഃf͉ධʈ೻͟׵ਿή̮௅ᐑྤૢ΁መεࠢ
              Փdઠ༶ᎆ༸ᇞҖၾ߈൳ʘኣ᜗ʿਿᅸ໊ɦڢ͍ʹdኣ᜗ೌجၪܵɓছҁ዆׌ၾஹᚃ׌
              ʘცӋdிϓ߈൳ཀ೻ʕ୽ɽʘѢᓔၾࠬᎈf͉݄ʈࣩԷમ՟ʘʈجڷ͟ᆑ޷ዚ޷࠯ආ
              Бኺɺኣ᜗ۃܝʘ˥̻ᙺᆉήᆵҷԄdԨৣΫጵܱઢЪุ˸ޚᆨᜄၪᄝኑɺʈجʿᓃ
              ʜʈجภৣԴ͜d˸ᆽڭኺɺኣ᜗࿧ৰЪุʘτΌd࿧ৰཀ೻ᔟ͟සߒ85*55ʮʱʘආ̈
              ஷ༸dආɝᆑ޷ዚۃ˙दཝٙʈЪਜගʫd˸ɛʈ࿧ৰ˙όરৰღᖟf͉˖तఱ߈൳ۃ
              ࠑήɨღᖟהમБ࿁ഄၾ݄ʈ˙جd˸ʿ߈൳ཀ೻הࠦᑗѢᗭeΚᎈًرʘ೯͛eΪᏐ
              ၾд؂dਂଉɝʘࣩԷႭ׼f
              ᗫᒟ൚: ήɨኺɺኣe˥̻ᙺᆉeޚᆨᜄၪᄝኑɺeᓃʜf
                  Case Study of Tunneling Through a Retaining Wall Beneath an Existing

                                     Subway System for the Xinzhuang Line

                                                                                  2
                                                           1
                                      Rong-Fong Jhan    Dao-Hsin Cheng
                                                       Abstract

                   Tunneling between Songjiang Nanjing Station and Zhongxiao Xinsheng Station on the
               Taipei MRT Xinzhuang line was challenged by the need to drive through an underground
               structure containing six retaining wall panels, including irregular continuous walls and
               non-continuous foundation piles, beneath the existing tunnels of the Taiwan Railways
               Administration (TRA) and Taiwan High Speed Rail (THSR) system. As result of external
               environment limitations, a non-orthogonal approach was taken between the tunnel alignment
               and the retaining wall and foundation piles. For safety reasons, the construction procedure of
               this case adopted horizontal grouting to improve the soil condition around the retaining wall
               from the head of the Tunnel Boring Machine (TBM), and was coordinated with the glass-
               fiber shotcrete method and the well-point method to excavate and break up the obstacles and
               wall bodies through the air chamber with an only 85*55 cm channel to enter a very narrow
               working space at the front of the TBM. This article aims to describe the construction method
               and countermeasures adopted during this case, as well as the difficulties encountered during the
               period when TBM drove through the wall. Furthermore, it conducts a wide discussion of the
               dangerous conditions that occurred and countermeasures taken to overcome them.
               Keywords: underground retaining wall, horizontal grouting.


            1c ၽִ̹̏݁ઠ༶ʈ೻̡یਜʈ೻ஈਓᐼʈ೻̡ccccccjfchan@trts.dorts.gov.tw
            2c ၽִ̹̏݁ઠ༶ʈ೻҅یਜʈ೻ஈୋɧʈਕה˴΂ccccdhcheng@trts.dorts.gov.tw
   106   107   108   109   110   111   112   113   114   115   116