5月4日2时58分，中铁二局广州综合管廊二分部27#-26#区间盾构机刀盘精准突破26#工作井洞门连续墙，实现全国首例超小半径转弯水土回填盾构接收。
管廊27#～26#区间为单线隧道，区间长度810.341m，全程采用地下敷设，盾构机在27#工作井始发，先后穿越地铁六号线、老旧仓库、荔湾湖，最终以250m小转弯半径在26#工作井过站。
盾构区间沿线地质条件复杂，盾构掘进控制困难，易发生喷涌，易造成湖底沉降形成透水通道。为确保盾构安全顺利接收，项目部强化技术支撑，开展技术攻关，严格控制掘进姿态每环及时纠偏；同时积极开展劳动竞赛活动，营造“力争上游”“争先创优”的良好氛围；同时提升应急能力，不间断地上地下巡视，多次开展应急演练，保障接收过程安全。
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