当前位置:首页>南京>新闻速递 | 国内首台深冷制冷机组在南京至仪征线市域铁路龙潭站盾构始发端头顺利应用并成功完成了深冷冻结施工任务!

新闻速递 | 国内首台深冷制冷机组在南京至仪征线市域铁路龙潭站盾构始发端头顺利应用并成功完成了深冷冻结施工任务!

  • 2026-05-03 17:18:47
新闻速递 | 国内首台深冷制冷机组在南京至仪征线市域铁路龙潭站盾构始发端头顺利应用并成功完成了深冷冻结施工任务!

2026年4月15日,南京至仪征线市域铁路一期工程江乘站~龙潭站区间隧道盾构龙潭站始发端头地层冻结加固项目,采用国内首台深冷、全工况大型制冷机组——深冷1号机组进行冻结,实现了深冷冻结设备-60℃全工况连续稳定运行,地层冻结效率大幅提升,较常规-30℃冻结施工工期缩短一半以上。

深冷冻结机房

深冷冻结系统

深冷冻结效果达到后盾构始发条件核查会的顺利召开

技术创新和突破

沈阳极地冻结工程有限公司根据行业发展实际需求,依托自身优势,联合中国矿业大学、辽宁中科地下工程有限公司、辽宁富瑞冻结新技术研发有限公司、北京中矿传热技术有限公司等单位组成了强大的科研团队,组织开展了深冷冻结设备核心技术攻关,重点突破-60℃工况下制冷循环系统设计、深冷冻结温度与应力耦合模拟、耐深冷材料研发及自动化控制和数据自动分析系统等五大技术难题;同步建立涵盖设备选型、冻结设计、温度场监测、变形预警、控制及解冻工艺的全周期技术标准体系。

深冷制冷机组实现了从高负荷的正温向-60℃深冷全工况冻结施工,开创了国内由-30℃常规冻结向-60℃深冷冻结施工的先河。深冷1号制冷机组从构件的选型、换热量计算、材料选取、制冷剂和深媒1号冷媒剂的配制、电控系统和自动化控制系统设计等方面实现了一系列的创新,为-60℃深冷冻结替代常规-30℃冻结奠定了基础。其中深冷1号制冷机组的设计运行工况是-80℃,冷媒剂冰点最低可达-120℃以下,且成本低,适用性强。

除了制冷设备方面的重大突破,深冷配套设备选择、深冷冻结材料选用、冻结温度监控和数据自动分析、深冷冻结施工安全管控等方面也实现一系列的创新,为-60℃深冷冻结替代常规-30℃冻结提供了保证。通过自动化控制系统和物联网技术,实现深冷冻结系统的远程管控和自动化分析,节省人力、物力,从原来每个工地都需要熟练2~3名操作工到所有项目只需2~3名熟练操作工。

通过施工现场取样,对深冷冻土力学特性进行了系统研究,获得了深冷冻结冻土的相关力学参数及随温度变化的规律;通过物理模拟试验和数值分析研究了深冷冻结温度场,获得了深冷冻结温度场的变化规律冻结壁厚度和平均温度的计算方法深冷冻结孔布置方法;通过研究深冷冻结壁的变形规律和承载特性,获得了深冷冻结壁变形规律,总结出了深冷冻结设计理论研发了全自动温度场采集和数据自动分析系统,解决人工温度场采集和分析周期长、实时性差的问题,为施工安全提供保障;通过以上研究,为今后深冷冻结设计和施工,包括冻结壁厚度和平均温度的计算提供参考,同时确保深冷冻结更安全、更广泛。

随着深冷冻结时间的缩短,弥补了深冷冻结其它方面增加的费用,常规-30℃冻结相比,-60℃以下深冷冻结具有更高的性价比。这标志着我国在深冷地层冻结施工从设备、材料、安全、造价等方面实现了一个新的跨越,为深冷施工的普及开创了先河。

研究成果

在参与科研攻关各单位的精诚合作下,自2023年初项目启动以来,历经年多的研究,初步取得以下成果:

■ 解决了深冷工况下多相流体换热失稳、深冷材料脆化断裂、冻土结构界面应力突变等难题。

■ 研发形成具有完全自主知识产权的深冷冻结技术装备体系,实现核心部件100%国产化,关键系统等均自主研发。 

■ 深媒1号冷媒齐不仅解决了普通溶液冰点高的、易腐蚀或易燃、粘度高、流动性差、热交换效果差的难题,还具有质量轻、经济、环保等特性,是应用于深冷冻结施工的最优选择。

提出了符合地层冻结设计技术要求和施工工艺的解决方案,为类似项目深冷冻结设计与施工提供参考,建立覆盖设计、制造、生产、施工、监测、验收全链条的国产化技术标准体系。

■ 编制完成工程验收企业标准,已在南京至仪征线市域铁路一期工程江乘站~龙潭站区间隧道盾构龙潭站始发端头地层冻结加固项目成功应用,下一步将加速向长三角、京津冀、粤港澳大湾区等软弱富水地层密集区推广,助力城市群地下空间安全高效开发施工,同时向煤矿深厚岩土地层冻结方向延伸。

应用前景

创新里程碑:国内首台全工况-60℃深冷冻结机组正式应用于工程项目,突破传统-30℃冻结温度的局限。 

■ 随着积极冻结工期缩短一半以上,冻土帷幕强度提升,冻结壁形成速率的增快,-60℃深冷冻结除了完全替代常规-30℃低温冻结外,可用于地下水流速大的地层、高含盐或海地层冻结,还可用于应急抢险、地下结构修复、地下设备检修或脱困工程,尤其是高埋深、高地温地层冻结,更具有不可替代、可行、优质、高效、环保等优势,符合冻结加固施工行业技术发展的趋势。

■ 实现-60℃下连续稳定运行,最大制冷量达12.9×10⁴kcal/h,创国内地层超冻结装备全工况大制冷量运行的先例;形成“设计——装备材料——施工——监测”全周期技术闭环,具备从冻结方案设计、冻结设备研发和制造、冻结材料生产、现场施工、冻结系统及冻土帷幕自动化监测和分析、施工参数实时反馈的数字化、智能化管控能力。

■ 深冷冻结技术不仅可以应用于城市轨道交通工程施工,还可广泛应用于各种矿山富水软土地层地下输水管道工程冻结法施工地下输油管路工程冻结法施工其他隧道、井筒、巷道建设工程冻结法施工地基临时加固工程冻结法施工各种地下工程涌水、涌砂的应急抢险处理以及地下设备检修脱困施工等同时对地下水流速大的地层、高含盐或海地层高埋深、高地温地层冻结更具有不可替代性

想了解更多深冷冻结技术内容,请期待我司后续为您带来的独家报道!

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  1. CONNECT:[ UseTime:0.000543s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000793s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000675s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005188s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000730s ]
  6. SELECT * FROM `set` [ RunTime:0.001505s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000661s ]
  8. SELECT * FROM `article` WHERE `id` = 551747 LIMIT 1 [ RunTime:0.057543s ]
  9. UPDATE `article` SET `lasttime` = 1778380519 WHERE `id` = 551747 [ RunTime:0.011818s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000344s ]
  11. SELECT * FROM `article` WHERE `id` < 551747 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000618s ]
  12. SELECT * FROM `article` WHERE `id` > 551747 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000554s ]
  13. SELECT * FROM `article` WHERE `id` < 551747 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005699s ]
  14. SELECT * FROM `article` WHERE `id` < 551747 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008425s ]
  15. SELECT * FROM `article` WHERE `id` < 551747 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001866s ]
0.188303s