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題名 | 捷運工程深開挖聯合袪水案例探討=Joint Dewatering for MRT Deep Excavations--A Case Study |
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作者 | 趙曉周; 楊國榮; 蘇鼎鈞; 陳俊宏; Chao, Hsiao-chou; Yang, Gwo-rong; Su, Ting-chiun; Chen, Chun-hung; |
期刊 | 地工技術 |
出版日期 | 20151200 |
卷期 | 146 2015.12[民104.12] |
頁次 | 頁65-74 |
分類號 | 442.96 |
語文 | chi |
關鍵詞 | 景美層袪水; 深開挖; 捷運工程; 聯合抽水; Chingmei formation dewatering; Deep excavation; MRT construction; Joint dewatering; |
中文摘要 | 臺北捷運松山線CG290標G14北門站與鄰近之桃園機場聯外捷運系統CA450B標C1/D1基 地開挖作業之景美層袪水施工時程重疊,在同時袪水相互影響的狀況下,兩工程藉由作業整合 及監測確保施工開挖措施足以維持上舉穩定。開挖期間最大聯合抽水工率為7,216CMH,於G14 站開挖至大底前後則保持在 3,900CMH左右,同時間兩開挖基地周圍景美層水頭均抽降至 EL.82m以下,符合上舉穩定安全需求。兩工程之聯合抽水歷時268日,對景美層水位之影響達 盆地西、南、北邊緣山區,大致涵蓋台北盆地景美層分布範圍全域。 |
英文摘要 | The Chingmei Formation dewatering schedules were overlapped for deep excavations of the G14 Beimen Station of Taipei MRT Song-Shan Line and the adjacent C1/D1 site of Tao-Yuan International Airport Express Link. As the interaction of dewatering effects between two excavations could be complicated, integration of dewatering operation and groundwater monitoring were incorporated into the overall management scheme to ensure safety against potential uplift failure. Pumping and monitoring records show that the maximum pumping rate during joint dewatering was 7,216 CMH. The pumping rate was maintain at about 3,900CMH at the final stage excavation and foundation slab construction while the groundwater level of Chingmei formation was controlled below EL.82m to meet specified safety requirements. The joint dewatering activities lasted for 268 days. The influence area of the groundwater level of Chingmei Formation reaches to the south, north, and west boundaries of Taipei Basin, which almost cover the whole Chingmei Formation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。