查询词典 overbreak

The generalized fractal dimension model of openings perimeter in jointed rock mass is put forward. The relation between erecting parameters and generalized fraetal dimension of openings perimeter is analyzed. According to the fractal theory, the relation between overbreak as well as underbreak and generalized fractal dimension of openings perimeter is built.

块体理论是研究洞室超欠挖的重要工具，它是从拓扑几何学的角度来研究洞室中的关键块体，但关键块体与超挖块体之间存在区别，文中对超挖块体和关键块体之间的关系进行分析研究，应用块体理论和结构面网络模拟技术相结合的方法预测了洞室超挖块体的大小。

The application of smoothwall blasting in crushed surrounding rock of No.2 tunnel with crushed surrounding rock has obtained more satisfactory results through selecting rational blasting parameters,adopting right supporting method and controlling the overbreak or underbreak of the tunnel effectively,etc.

文摘：在周家山2号隧道破碎围岩施工中，应用光面爆破技术，通过选择合理的爆破参数，正确的支护施工方法，有效地控制隧道的超欠挖，加快掘进速度，取得了较理想的效果。

2Combined with dense-constructed area of Shiqiaotou tunnel, a series of factors that lead to ground deformation and affect the stability of ground buildings are systematically analyzed.These factors include overbreak in shallow tunnel, reserved deformation and soil squeezing.By calculation and analysis of ground deformation of other sections,a division of settlement controling grade is made.

2以石桥头隧道地表变形重点控制地段为例，对浅埋隧道超挖、预留变形量、掌子面土体挤出等地层损失诱发的地表变形及其对地面建筑稳定性的影响进行了系统地计算和分析；通过地表变形的计算分析，对隧道不同地段的地表变形控制等级进行了划分。

Overbreak excavation instability and local instability are indicated on the phase of construction about soil nail wall on the base of different instability situation about two cases,when excavation beginning.

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。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。