除特殊情况外,使用混合护盾式TBM并不是克服TBM进行隧道掘进局限性的方法;
应用于特定状况,设计TBM并确定特殊需要解决的困难 。
;
the importance of the contractors expertise and, above all, the personnel director and technical staff on set, is。

38、often not given the right attention, while in reality it plays a primary role in the functioning of a TBM, particularly under limiting condition;
承包商专业知识的重要性,首先,没有给予指导和技术人员以适当的关注,事实上,正是这些人在TBM发挥功效方面,特别是在限定条件下,发挥着首要的作用the time and cost for overcoming limiting conditions, in a tunnelling project acqui 。

39、red through a competitive bidding, should be supported by the client. He is to account for adequate margins in programming and budgeting whenever a tunnel is to be excavated in difficult ground conditions, according to a risk a assessement evaluation;
this point is valid also for tunnelling projects 。

40、 to be construct by the drill and blast method.通过竞标,隧道工程中所要求的克服限定条件所花费的时间和成本应该得到客户的认可 。
根据评估,隧道开挖在不良围岩状况下进行,在设计和预算方面要充分地考虑到差额;
此方法对采用钻爆法进行施工的隧道同样适用 。
Given that a TBM capable of advancing under whatever geological condition does not the type of the TBM used, and假定TBM在任何地质条件下都能步进,但这种类型的TBM不能在实际应用中出现, 。
the。

41、design and special construction characteristics the TBM adopted. TBM采取的设计和特殊的制造性能In fact, it is not sufficient to just order from a qualified manufacturer a particular type of TBM;
instead, a continuous collaboration and control of all design and construction details are essential by its intended us 。

42、er, the contractor. The is particularly true as far as there are still no “Accepted Standards” for the design and construction of a type TBM, and each TBM to be constructed is to be considered as a prototype, one different from another one , given that:事实上,仅仅从有资质的TBM制造商那里订购一台特别的TBM还远远不够;
而基本的还要由使用者,承 。

43、包商不断地合作并监控机器的设计制造细节 。
实际上,只要一种类型的TBM还没有设计和制造的“验收标准”,制造的每一台TBM只能视作雏形,不同于其它的,原因如下:the design and manufacturing of TBMs is a continuous, technologically innovative process, TBMTBM的设计和制造在不断发展,TBM的技术革新也在进行中 。
each tunnelling project has its own characteristics and each specialistic contractor has own traditi 。

44、ons and opinions 每个隧道工程都有本身的特征并且每个专家级的承包商都有自己的传统和观点 。
采用TBM的地质条件的局限性LIMITING GEOLOGICAL CONDITION FOR TBMs APPLICATIONA limiting condition for the use of TBM excavation can be defined where the geological condition are such that the same TBM is significantly slowed down or even obstructed 采用TBM进行开挖的局限 。

45、性就是地质条件是极大减慢TBM掘进速度并阻碍其运行的因素 。
A geological condition is intended to be a limiting one only in relation to the type of TBM used, its design and special characteristics, and eventually any operating errors. A particular geological condition becomes a limiting one only when it is beyond a certain import 。

46、ance, or when the associated problems are beyond a certain level of severity, or else due to combination of events each being by itself not critical 地质条件是与TBM使用类型,设计,特征和最终运行失误有关的限制条件 。
特殊的地质条件之所以成为限定条件,是当其超越某种重要性,或当随之而来的问题超越某种严重水平,或由于非关键事件交互作用所导致的 。
The Importance of Geological and Geotechnical Investig 。

47、ations地质和地质观测的重要性Despite the excellent performance of TBMs in favorable ground conditions, as reported in recent years e.g., more than 1 km advancement per month for some hydraulic tunnels, in many cases the actual advancement rates have been below expectations and certainly less than claimed by TBM 。

48、 manufacturers 如近几年所报告的,尽管TBM在好的地质条件下运行良好(例如,在某些输水隧道中每月进尺在 1 km以上),但在很多情况下,实际进尺率低于预期或少于TBM制造商所断言的那样 。
It would therefore be legitimate to think that, besides the unforeseen events, such as breakdown or failure of the TBM the components, the rock mechanics problems are often under-evaluated or neglecte 。

49、d. It should be noted the purpose of construction is to achieve the objective of the design and that the work must be manlike as defined in design, according to the specified safety factors and the expected time and cost 因此,除不可预见的情况外,想到TBM部件的故障或坏损,也不无道理 。

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标题：毕业设计外文翻译TBM在不良地质条件下的隧道掘进可编辑|毕业设计外文翻译TBM在不良地质条件下的隧道掘进（可编辑）( 四 )