
近日,在贝岗明挖段大里程端盾构始发井,“匠心二号”盾构机刀盘开始缓缓切削土体,再次开启穿越之旅,琶洲支线【贝岗明挖段-大学城东站】区间右线隧道盾构机顺利始发。
琶洲支线“贝大区间”隧道长度1222米,为双洞单线盾构隧道,采用一台开挖直径9.13米的土压平衡盾构分别完成左、右线掘进施工任务。
该区间左线隧道8月28日贯通后,珠三角城际公司乘势而上,随即组织策划参建单位做好“匠心二号”二次始发的准备。
一方面积极推进盾构机的拆解、转运、组装调试及维修保养等工作;另一方面充分借鉴左线盾构下穿江乐海、新化快速等风险工点管控经验,优化右线盾构施工组织和施工工艺,确保掘进安全和质量。
经过近40天准备工作,施工单位中铁隧道局采用洞内整体运输盾构后配套拖车的方式进行转场,确保了右线始发节点目标的顺利实现,为后续掘进施工赢得宝贵时间。
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