Newsletter 高速鐵路簡訊 . 交通部高速鐵路工程局
機場捷運中壢延伸線潛盾隧道穿越民宅高風險管控之探討 Discussion on High Risk Control of the House-Underpassing Matter of the Shield Tunnel in the TIAA MRT Zhongli Extension Line
機上灌漿管制表(截錄自CKS-CM01-COP-CCW-0029施工計畫書)。

機場捷運中壢延伸線潛盾隧道工程自老街溪站(A22)起沿中豐路推進至中山路附近,東轉至中正路橫渡線,因中豐路轉中正路部分並無直接的路幅,因此必須穿過民宅下方,且潛盾隧道位於地面下約20公尺,故維護民宅安全穩固,為施工過程之首要課題。
穿越民宅下方施工作業,依本局高風險管理程序,適時啟動管制暨檢查管理,施工期間落實檢查評估,並定期召開風險管理會議,檢討相關課題之因應處置對策,以確保施工作業依計畫執行,維護民宅安全無虞。
依施工規劃,潛盾機於穿越民宅下方,多採用機上灌漿或二次灌漿方式,同時由機殼或環片灌漿孔進行加強背填灌漿,可以大幅度抑制地表沉陷量,以保護地表之構造物結構安全。此外,更於穿越民宅處設置自動化監測設備,提供即時訊息進行狀況判斷及處置管理,以維隧道上方建物之安全。

The shield tunnel construction of TIAA MRT Zhongli Extension Line is conducted along Zhongfeng Road starting from Laojie River Station (A22) to the surroundings of Zhongshan Road and then to the Zhongcheng Road crossover with a turn to the east. As the road width is not sufficient, the crossover must underpass the residential houses. The shield tunnel must meet the criteria of 20 meters underground. Therefore, maintaining the safety and stability of residential houses is the most important issue in the construction process.
According to the BOHSR high risk management procedures, the control and inspection management should be activated timely and inspection and evaluation during construction should be implemented during the underpassing construction work. In addition, risk management meetings should be held on a regular basis to review the countermeasures of related issues so as to ensure that construction operations will be carried out in accordance with the plan and the safety of residential houses will be maintained.
According to the construction plan, the shield-tunneling machine that will pass under the houses will adopt on-machine grouting or secondary grouting to greatly reduce surface subsidence in order to protect the structure of the foundation. Moreover, automatic monitoring equipment is set up at the area to provide instant signals for status assessment and disposal management so as to safeguard the safety of buildings above the tunnel.

  • A22車站至A23車站捷運路線示意圖。
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