INTRODUCTION TO TRENCHLESS TECHNOLOGY 管道铺设非开挖技术的介绍

Presentation on theme: "INTRODUCTION TO TRENCHLESS TECHNOLOGY 管道铺设非开挖技术的介绍"— Presentation transcript:

1 INTRODUCTION TO TRENCHLESS TECHNOLOGY 管道铺设非开挖技术的介绍
摘抄整理： 吕明刚

2 Traditional Methods 传统的方法
First suited for “gre enfield” 适用于未发展区域 Low tech – little change over past 50 yrs 技术含量低，近50年没有多大改进 Level of planning & implementation basic 对计划与实施手段的要求低 “Non-greenfield” – surface disruptions, underground utilities 在市区施工， 对地面上的物景产生损坏，对地下的管网产生威胁

3 Trenchless Technologies 非开挖技术
Thrust Boring & Pipe Jacking (pre-1900’s) 顶管法 Auger Boring (1940) 螺旋钻进法 Impact Moling (1962) 冲击矛法 Directional Drilling (1971) 水平定向钻进法 Impact Ramming (1980) 夯管法 Pipe Bursting (1980’s) 爆(裂)管法

4 Definition of Trenchless Technologies 非开挖技术的定义
“A family of methods, materials, and equipment capable of being used for the installation of new or replacement or rehabilitation of existing underground infrastructure with minimal disruption to surface traffic, business, and other activities.” 非开挖技术就是采用各种方法， 材料，设备来铺设，更换或修复地下公用设施而能做到最小限度地扰民碍市

5 New Construction Techniques 新技术
H.D.D.水平定向钻进法 Pipe Bursting 爆(裂)管法 Microtunneling 微型隧道法 Pipe Jacking 顶管法 Auger Boring螺旋钻进法

6 Horizontal Directional Drilling 水平定向钻进法
Lengths of m 施工长度：15－1800米 Diameters of mm 管径25－1200毫米 Applications: 应用 utility conduits 市政工程 Pipelines 管道设施 gravity sewers 下水管道 force mains 压力管道 horizontal remediation wells 治理污染的水平管群 geotechnical investigations地质调查

7 HDD Process 水平定向钻进过程

8 HDD Process 水平钻进定进过程

9 Pipe Bursting 爆(裂)管法 Lengths of 100 - 900 m 施工长度：100－900米
Diameters of mm 管道直径：70－1060毫米 Applications: 应用 replacement of force mains 压力管的更换 replacement of gravity sewers 下水道的更换 Static Head 固定式裂管头 Pneumatic Head 气动式裂管头 Hydraulic Head 液压式裂管头

10 Pipe Bursting Process(Static) 爆管法的过程 （ 固定裂管工艺)

11 Pipe Bursting Process(Static Cont.) 爆管法的过程 （固定裂管工艺) 续

12 Pipe Bursting Process(Pneumatic) 爆管法的过程 （气动工法)

13 Microtunneling 微型隧道法 Lengths of 25 - 225 m 施工长度：25－225米
Diameters of mm 管径：250－3050毫米 Applications: 应用 gravity sewer installations 下水管道的安装

14 Microtunneling Process 微型隧道法施工过程

15 Pipe Jacking 顶管法 Lengths of up to 490 m have been achieved 施工长度可达490米
Diameters of mm 管径介于1060－3050毫米 Applications: 应用 large diameter gravity sewers and force mains 大型下水管道和压力管道

16 Pipe Jacking Process 顶管法施工过程

17 Auger Boring 螺旋横钻孔机 Lengths of 12 - 150 m 施工长度：12－150米
Diameters of mm 管径：200－1500毫米 Applications: 应用 relatively short crossings of pipes and conduits 短距离的管道施工

18 TWO CASE HISTORIES 两个例子
（一）Pipe Bursting 爆管法 （二）Horizontal Directional Drilling 水平定向钻进法

19 （一）爆管法 Alternatives 方案比较
Parallel the existing gravity trunk sewer with a new gravity trunk sewer 将新下水管与旧下水管平行安放 Construct a series of 5 new pumping stations and pump to adjacent sewerage area 需要设置5个新泵站，把污水泵送到邻近排污系统

20 Parallel Trunk Sewer 平行管道方案
Advantages 优点 Maintains gravity flow 维持重力流动 Disadvantages 缺点 Construction in silty sand to clayey material 3 to 6 metres deep with high groundwater in close proximity to Millstone River, a highly sensitive Coho salmon habitat stream 在3-6米的粘沙土层施工难度大；地下水位高；会影响三文鱼栖息地的生态 Additional right-of-way would be required 需要额外的管位 Cost Estimated at $5.1 million 成本估算约5.1百万美元

21 Pumped Option 泵站方案 Advantages 优点
Minimizes environmental impacts as pump stations and forcemains for the most part would be constructed in existing right-of-ways 对环境扰动小 Disadvantages 缺点 Added undesirable long term operational costs to the City of Nanaimo 给这个城市增加了一些额外的长期营运成本 Cost Estimated at $5.2 million 成本估算约5.2百万美元

22 Pipe Bursting Researched as a Possible Alternative 爆管法作为可能的另一选择
Advantages 优点 Less environmental impact as excavation is minimized 由于极少动土， 对环境影响小 Gravity flow maintained 保持重力流动 No additional right-of-ways required无需额外的管位 No long term operational and maintenance costs associated with pump stations 无需象泵站方案那样需要长期的营运和维护成本 More cost effective than alternatives 最经济的工法 Disadvantages 缺点 Upsize required at the upper limit of PB technology in North America; however, there had been limited success 扩径要求已达北美的爆管的上限；但也有一些成功的实例 Lengths 100m to 175m 长度为100米 至175米 Limited availability of contractors in North America with capability to perform upsize of this nature 能做这样的扩径工程的承包商有限

23 Demonstration Section 演示部分
Ability to burst project lengths (100m to 175m) 能施工100 至175 米的长度 Ability to burst pipe couplings 能裂管接头 Ability to burst concrete encasement 能裂混凝土包封 Although some difficulties encountered, remaining project was subsequently awarded 尽管遇到一些困难，项目最后获得通过。

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27 650mm (26”) 750mm (30”) 350mm (14”)

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30 （二）Horizontal Directional Drilling 水平定向钻进法 定向钻在美国信息高速网路上的应用

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