烟囱中位于屋顶上部的部分；它是有几个顶管的烟囱。
The part of the chimney that is above the roof usually has several flues.
分析了小口径顶管掘进机的社会经济效益和推广前景。
The social and economical benefits and extending prospect of the machine are analyzed.
在采取了相应的有效措施后，顺利完成了顶管施工任务。
After taking the proper measures, the construction of pipe pushing has been successfully fulfilled.
针对不同的工程类型，探讨顶管穿越石方爆破的具体方法。
According to different types of constructions, the concrete methods of rock blasting technology of pipe pushing are discussed.
长距离顶管施工中为减小顶进阻力通常采用注浆减摩措施。
Injecting slurry is usually used to reduce the jacking friction in long-distance pipe jacking.
针对工程实际情况介绍了大截面矩形顶管掘进的施工工艺。
The main technique parameters and application of large cross-section fiber bundles are introduced.
现代城市内的污水管道施工，主要采用的是顶管的施工方法。
In modern city sewage conduit construction, what mainly USES is top pipe's job practice.
采用有限元法分析了曲线顶管施工对管节和土体的影响效应。
The influence domino effect for pipe and soil caused by construction has been analyzed by using FEM.
提出了长距离直线和曲线顶管施工防止管道失稳的控制措施。
Finally, several control measures are proposed to avoid failure for long-distance linear and curvilinear pipe jacking construction.
曲线顶管施工技术以其特有的优势和应用领域，越来越受到重视。
Because of the advantages and application fields, curved pipe jacking technology is paid more and more attention.
人工顶管施工是穿越铁路、河流、公路等障碍物的最佳施工方法。
It is the best construction method to pass through such barriers as the railway, river, highway, etc.
系统上下位机结合通信技术，可实现控制顶管掘进机的有效运转。
Combining to communication technology, Model Pipe Jacker can operate orderly under the control of the system.
大口径长距离顶管施工顶进推力过大是困扰顶管施工多年的技术难题。
The construction of Pipe Jacking is beset with difficulty due to the large propulsive force for several years.
文章对泥水平衡法顶管施工工艺中应该注意的几个问题作了主要阐述。
This paper mainly expounds problems paid attention to in plaster balance top pipe construction technology.
利用半解析单元法将顶管施工中三维土运动问题转化成一维数值计算。
By making use of the semi analytical element method, the three dimensional soil movements problem of pipe jacking is transfered to a one dimensional numerical calculation.
为了确保大堤安全，必须开展顶管施工期间和工后的长江大堤安全监测。
In order to ensure the safety of the Yangtze levee, safety monitoring during pipe jacking and afterwards is necessary.
对于初学者来说重要的是注意型芯延伸完全穿过顶管，并且安装在底板上。
It is important for the beginner to note that the core pin extend completely through the sleeve, and is attached to the back plate.
文章通过昆明市某顶管工程实例，介绍了开敞式顶管施工的主要施工工艺。
The article introduced the main construction technique of open top pipe construction through a top pipe construction project instance of Kunming.
土压平衡式顶管掘进机机头泥土仓土压力控制是顶管工程中最关键的技术之一。
Soil pressure control is one of the most important technology of pipe pushing engineering with earth balance shield machine.
随着环境问题越来越受到重视，作为非开挖的顶管施工技术应用也越来越广泛。
With the environment getting more attention, the use of not-dig pipe jacking technology has become more extensive.
文中结合实际工程，介绍了人工挖土顶管方法的设计与施工及关键施工技术要点。
According to an engineering case, the paper introduces the design and key points of construction of pipe-jacking techniques.
重点介绍超前预支护中新型的顶管加固法，为地下工程施工技术的选择提供参考。
New pipe curtain method is detailedly dissertated, which can provide a reference to the selection of construction technology of underground engineering.
研究结果表明，水平平行顶管施工时中间区域受到双重扰动，产生的地面沉降较大。
It shows that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
对水平平行双线顶管之间的相互作用进行了分析，提出了横向扰动区范围的计算公式。
The interaction of two level parallel pipe jacking is analyzed; and the calculation of lateral disturbance scope is advanced.
分析表明，水平平行顶管施工时由于中间区域受到双重扰动，会产生较大的地面沉降。
It is shown that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
目前，大直径泥水平衡顶管掘进已成为城市给排水水管、电力管线工程等首选的施工方法。
At present the large diameter slurry pipe jacking is the preferred construction method in project of urban water supply and drainage pipe and electric power pipe.
介绍顶管掘进机截割传动装置所采用的行星齿轮减速器，论述行星齿轮减速器的结构特点。
This paper introduces the epicyclic reduction arrangement applied in cutting drive mechanism in pipe jacking, analyses the construction and characteristics of epicyclic reduction arrangement.
介绍顶管掘进机截割传动装置所采用的行星齿轮减速器，论述行星齿轮减速器的结构特点。
This paper introduces the epicyclic reduction arrangement applied in cutting drive mechanism in pipe jacking, analyses the construction and characteristics of epicyclic reduction arrangement.
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