三峡二期厂坝工程帷幕灌浆总投资 45 2 5万元人民币 ,被誉为“地下的三峡大坝”。大坝蓄水后帷幕承担起坝基防渗和降低扬压力 ,防止坝基渗透变形破坏的作用。三峡二期厂坝帷幕灌浆期间 ,克服了工期紧、强度高等困难 ;攻克了涌水频率高、孔深大等难题。为此长江委三峡工程监理部制定了施工现场 2 4h全方位的跟踪监控措施 ,施工期间认真做好设计文件图纸审签 ,组织设计技术交底 ,审查承建单位的施工组织设计 ,督促承建单位建立健全三级质量检验与保证体系 ,对工程质量 ,进度和合同支付进行了有效的控制。另外对涌水段和大漏量孔段灌浆施工等进行了重点监控 ,对施工期涉及影响质量的突出问题采取了积极有力的解决措施。在业主、设计、监理和施工单位的共同努力下圆满地完成了施工任务 ,为二期基坑破堰进水提供了必备的条件。 Three Gorges Project dam project curtain grouting a total investment 452500 yuan, known as the “underground Three Gorges Dam.” After the impoundment of the dam, the curtain will take the role of seepage prevention of the dam foundation and lowering of the uplift pressure so as to prevent the infiltration deformation and destruction of the dam foundation. During the curtain grouting of the second-stage dam of the Three Gorges project, it has overcome the difficulties of tight construction schedule and high strength; it has overcome such problems as high gushing water frequency and deep hole depth. To this end, the Three Gorges Project Management Department of Yangtze River Commission has formulated 24-hour tracking and monitoring measures at the construction site. During the construction period, it conscientiously performed the examination and approval of the design documents, organized the design and technical studies, examined the construction organization and design of the contractors, and urged the construction units to establish and improve Three quality inspection and assurance system, the project quality, progress and contract payment were effectively controlled. In addition, the water gushing section and the large leakage hole grouting construction were mainly monitored. Positive and powerful measures were taken to deal with the outstanding problems that affect the quality during the construction period. With the joint efforts of the owner, design, supervision and construction unit, the construction task has been satisfactorily completed and the necessary conditions have been provided for the infiltration of the second foundation pit through the weir.