国家重大水利工程重庆市藻渡水库工程全线首条输水隧洞贯通|强辱丰满人妻HD中文字幕

  中新网重庆9月22日电 (记者 刘相琳)记者22日从重庆市水利局获悉,国家重大水利工程重庆市藻渡水库工程垛垛石隧洞顺利贯通,成为全线首条贯通的隧洞,标志着该项目输水工程取得阶段性突破,为工程全线通水奠定坚实基础。

图为垛垛石隧洞顺利贯通。重庆市水利局 供图

  重庆市藻渡水库工程是国家172项节水供水和国务院150项重大水利工程之一,属Ⅱ等大(2)型水利工程,由中交上航局、中交二航局、长江设计集团有限公司组成的联合体具体实施。藻渡水库工程由枢纽工程和输水工程组成。枢纽工程大坝正常蓄水位375米,总库容达2.01亿立方米。输水干渠由总干渠、左干渠和右干渠三部分组成,总长度约94公里,涉及重庆市綦江区、江津区、巴南区等多个区域。

  此次贯通的垛垛石隧洞位于綦江区三江街道附近,全长4098米,断面为城门洞形,底宽2.8米、净高3.56米,连接着上游的温家沟倒虹吸与下游的大河沟箱涵,是输水工程的重要路线。

  面对垛垛石隧洞内水文地质条件复杂、通风难度大、施工空间狭小等难题,项目团队通过超前地质预报系统、地质素描等方式,对隧洞地质进行准确判定;同时就洞内通风、施工排水展开专项设计,以保证洞内施工的规范性与安全性。

  垛垛石隧洞围岩多为泥岩、粉砂岩夹泥质粉砂岩,岩层稳定性差。针对这一核心风险,项目团队提出“短进尺、弱爆破、勤支护”方案,通过优化爆破参数、动态调整支护方案等措施,结合24小时轮班巡查机制,确保了施工全程零事故。最终仅用475天完成施工,较原计划提前6个月。

  “藻渡水库建成后将成为綦江城区及沿岸乡镇的防洪屏障,显著提升区域供水灌溉能力,兼具生态保护与发电效益,对完善重庆水网布局、服务成渝地区双城经济圈建设具有重要意义。”重庆市水利局相关负责人表示,将持续强化指导,聚焦藻渡水库工程施工质量管控与安全防护等关键环节,细化方案、精准施策,全力推动藻渡水库尽早建成投用。(完)

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