1) overbreak excavation instability
超挖失稳
1.
For overbreak excavation instability.
结合两个纯土钉墙工程实例,根据工程失稳时新开挖土层的不同失稳现象,提出了土钉墙施工失稳有超挖失稳和局压失稳两种类型。
2) supercritical buckling
超临界失稳
3) Over-excavation
超挖
1.
The geological defects and over-excavation of underground powerhouse have an bad impact on the rock-bolt crane girder in bolt axial force,beam deformation and the interface of the rock-bolt crane girder and the rock wall.
地下厂房的地质缺陷和超挖往往对岩锚梁的锚杆受力、梁体变形以及岩锚梁与岩壁的结合面产生不良影响,本文对三板溪水电站岩锚吊车梁施工过程中的缺陷成因和处理措施进行了研究,最后对岩壁整体超挖时对锚杆拉力和岩壁抗滑稳定系数的影响进行了敏感性分析。
2.
So it has practical significance to research the control of over-excavation.
隧道钻爆法施工中,普遍存在超挖问题。
3.
Aiming at the problem of structure design of a highway tunnel crossing active faults zone,protective design strategies of breaking resistance are put forward;and then over-excavation and articulated design are discussed.
针对穿越活动断层区隧道的结构设计,提出活动断层区隧道结构的抗断设计对策;对"超挖设计"和"铰接设计"两种抗断设计方法进行了讨论;提出了"铰接设计"中隧道节段长度及节段间连接抗剪刚度的计算方法,并分析了连接剪切失效后隧道节段的运动特征。
4) over excavation
超挖
1.
Begining with the current situation of the over excavation of main ramp,the analysis of the cause of over excavation was made and measures for reducing over excavation in the construction of large section tunnel were brought forward.
从新城金矿主斜坡道超挖现状入手，分析造成超挖的原因，提出减少大断面巷道（ 硐室） 掘进施工超挖的具体措施，以提高矿山综合经济效益。
2.
Based on the application of tube frames in tunnel construction, their functions to prevent over excavation and cave in in soft and weak wall rocks are summarized, and the construction techniques are also introduced in detail.
结合隧道施工现场管棚的应用情况，总结了管棚在软弱围岩隧道施工中对预防超挖及塌方的作用，并详述了管棚施工工艺。
3.
An engineering example that a deep foundation pit is in dangerous status caused by over excavation in soft clay is described.
介绍一软土地区深基坑由于超挖引起基坑险情的工程实例。
5) overbreaking
超挖
1.
Analysed the factors of overbreaking,offered some preventative and reducing overbeaking measures.
分析了超挖的因素，提出了防止或减少超挖的措施。
2.
According to the blasting theory and testing results of real tunnel,the parameters of smooth blasting are comprehensively studied and the overbreaking of tunnel is controlled.
本文依据爆破理论结合现场试验结果，对光面爆破参数进行了综合研究，较好地控制了超挖现
3.
In addition, overbreaking greatly affects the vertical deformation, and aggravates horizontal deformation.
结果表明,基坑开挖应采用竖直方向分层、水平方向分段进行的方法,在深度较大的地方分段的长度应适当减小,超挖对基坑边壁的竖直方向变形影响很大,且使边壁的水平方向变形量增大,应当尽量避免超挖出现。
6) overbreak
['əuvə,breik]
超挖
1.
Investigation and assessment of overbreak in the adit PD_6 of a pump-storage hydroplant;
某抽水蓄能电站PD_6平洞超挖调查与评价
2.
The mainly factors affecting overbreak in the tunnels include the geological characteristics of rock mass and geological constitution.
影响隧洞围岩超挖的主要因素是岩体的地质特征和地质组成,对岩体在开挖过程中会遇到超挖问题,将从岩石的破坏机理出发,研究裂隙岩体开挖后的隧洞周边分数维,并提出了裂隙岩体隧洞开挖周边的广义分数维模型。
3.
The prediction of block overbreak in the openings is based on the wavelet neural network of the geological statistical model.
基于地质统计模型的小波神经网络,对地下洞室块体超挖情况进行了预测。
补充资料：裂纹失稳扩展
分子式：
CAS号：
性质：材料内部裂纹尖端的应力场强度因子达到或超过材料的断裂韧性之后发生的裂纹快速扩展。裂纹失稳扩展将导致材料迅速断裂。
CAS号：
性质：材料内部裂纹尖端的应力场强度因子达到或超过材料的断裂韧性之后发生的裂纹快速扩展。裂纹失稳扩展将导致材料迅速断裂。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条