【摘要】：深圳北環(huán)電纜隧道盾構在掘進過程中,遇建筑基坑大面積深埋地下錨索群,根據電纜隧道與虹灣花園建筑基坑的位置關系、地面環(huán)境和工程水文地質條件,從造價、工期、環(huán)境影響和施工風險等方面對比分析,確定采用帶壓進倉清除錨索和人工挖探井、液壓千斤頂拔錨相結合的方案,通過刀盤前方土體袖閥管加固和膨潤土筑泥膜保壓,進行帶壓進倉將纏繞刀盤上的錨索清除;通過人工配合卷揚機跳孔挖探井、液壓千斤頂拔除刀盤前方錨索,成功將大面積深埋地下錨索快速清除。解決了錨索群對盾構施工的影響,確保盾構安全順利通過。
[Abstract]:In the process of shield tunneling of Shenzhen North Ring Cable Tunnel, when encountering a large area of deep-buried underground anchor cable group in the foundation pit of the building, according to the location relationship between the cable tunnel and the foundation pit of Hongwan Garden Building, the ground environment and the hydrogeological conditions of the project, from the aspects of cost, construction period, environmental impact and construction risk, it is determined that the anchor cable group should be removed by using the pressurized advance bin The scheme combining with manual drilling and hydraulic jack pulling anchor is adopted to reinforce the soil sleeve valve tube in front of the cutter head and keep the pressure of bentonite mud film. The anchor rope on the winding cutter head is removed by pressing into the warehouse, and the anchor rope in front of the cutter head is successfully pulled out by hydraulic jack through manual hoist jumping hole to dig the exploration well. The quick clearance eliminates the influence of anchor group on shield construction and ensures the smooth and smooth passage of shield.
【作者單位】： 中鐵隧道集團一處有限公司;
【分類號】：U455.43
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本文編號：2221768