1) layered and blocked excavation
分层分区开挖
1.
Some factors such as the interaction between the soil and structures,layered and blocked excavation,and the construction process of the excavation were taken into consideration in the analysis.
分析了分层分区开挖和支护结构分区施工对基坑维护结构变形特征的影响,结果表明:分层分区开挖对基坑变形有较大影响。
2) stratified excavation
开挖分层
1.
In comprehensive consideration of various factors,reasonable stratified excavation was determined and effective measures of .
拉西瓦水电站地下厂房位于高地应力区,厂区最大主应力达20～30MPa,为确保施工、运行期的安全及开挖质量,对围岩弹性释放能和能量释放率进行了计算分析比较,综合考虑其他因素后,合理确定了地下厂房开挖分层,并提出了厂房顶拱开挖方法及支护措施。
3) Stage Excavation
分层开挖
1.
Research on Response of Concrete Rock Face Beam to Stage Excavation Blasting Vibration in Underground Powerhouse;
地下石房分层开挖爆破对混凝土岩壁梁振动影响研究
4) excavation in zones
开挖分区
5) staged excavation
分步开挖
1.
And the changes of the stress field and bias field of the surrounding rock of the tunnel under two kinds of conditions and with the staged excavation are obtained as well as the stability analysis of the surrounding r.
得到了两种情况下的隧道围岩在分步开挖时的应力场、位移场的变化情况,以及围岩稳定性的分析。
6) excavation by steps
分步开挖
1.
Studies on displacements and earth pressures of pit-retaining structure during excavation by steps;
分步开挖过程中基坑支护结构的变形和土压力性状研究
2.
At the same time,some calculating methods of earth pressures are discussed,such as estimating water and earth pressures together,estimating water and earth pressures separately,excavation by steps according to the construction process,earth pressures c.
根据基坑支护工程的设计计算理论与工程实践的发展与动态,参阅大量相关资料,结合近年的研究成果,对支护结构土压力计算理论的创新与发展进行了分析,并对水土合算、水土分算、考虑施工过程的分步开挖、考虑渗流时的土压力计算方法进行了论述。
3.
Equation of ultimate state of active earth pressure loading increment on retaining wall in foundation pit during excavation by steps is set up;coefficient of sorting of earth pressure loading conforming to the requirement of reliability is given;problems in earth pressure calculation during excavation by steps are analyzed.
以朗金土压力公式为基础，建立了分步开挖基坑挡土墙上主动土压力荷载增量的极限状态方程，给出了符合可靠度要求的土压力荷载的分项系数；分析了分步开挖时土压力计算中应注意的问题，并分析研究了土性参数的变异性与荷载分项系数对土压力可靠度计算的影响。
补充资料：垂向分层理论
垂向分层理论
stratification theory of grains in vertical direction
ehuix旧ng feneeng Iilun垂向分层理论(stratifieation theory of grainsin vertieal direetion)对重选过程中矿粒群在介质中作垂向分层运动机理的阐释。在重选设备内堆置或铺置的动态矿粒群称作床层。借助介质的垂直流动、沿斜面流动或作回转运动使床层松散，是粒群发生分层转移的先决条件。分层是指矿物粒群按密度差形成不同的矿物层;颗粒的粒度以及形状对分层也有重要影响。对于分层的发生机理，曾经有过多种见解，但归纳起来不外两类观点。一类是动力学分层学说，认为分层是按个别颗粒在介质中的运动差异发生的(见自由沉降速度差分层学说、干涉沉降速度差分层学说);另一类是静力学分层学说，认为分层是粒群整体的内在不平衡因素引发的(见悬浮体密度差分层学说、位能分层学说和重介质分层学说)。前一类学说强调了流体动力对颗粒运动的影响，而忽略了颗粒间的静力作用;后一类学说的立论观点则忽视了流体动力对分层的影响，而将床层内颗粒或颗粒群间的静力差异视为分层的决定性因素。 (孙玉波)
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