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降水
相关语句
  precipitation
    The Deformation Observation of the Precipitation Engineering on a Large Area
    大面积降水工程的变形观测
短句来源
    Precipitation Technology for Deep-pit of Marine Sludge geology
    海积淤泥地质深井降水技术
短句来源
    Several problems analysis of the design of foundation pit precipitation project
    基坑降水工程设计中几个问题分析
短句来源
    The precipitation design of certain projects
    某工程降水设计
短句来源
    Comprehensive Analysis on the Technical Economy of Precipitation of Light Well Point and Deep Well Point
    轻型井井点降水与深井井点降水之综合分析
短句来源
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  dewatering
    OPTIMUM DESIGN OF FOUNDATION PIT WELL POINT DEWATERING PROJECT
    基坑井点降水工程的优化设计
短句来源
    Dewatering and Slope protecting Steel Sheet Piling Engineering in Deep Excavetion Pit
    深基坑开挖降水及钢板桩围护工程
短句来源
    Base on the influence factors and current computing methods of ground settlement,ground settlement induced by supporting excavation and dewatering of foundation pit are analyzed by the method of finite-difference that Mohr-Coulomb Model is used with the engineering example.
    在归纳影响基坑开挖周边土体变形行为因素和总结当前地面沉降计算方法的基础上,结合具体工程实例采用以Mohr-Coulomb本构模型的有限差分法模拟基坑支护、降水和开挖过程,分析基坑开挖对周边土体沉降的影响。
短句来源
    Design and Application of the Well Point Dewatering Program
    井点降水方案程序设计及应用
短句来源
    Calculation of Partly Penetrated Well Flow for Foundation Dewatering
    基坑降水的非完整井流计算
短句来源
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  water precipitation
    Constructive plan of water precipitation in deep well points
    深井井点降水施工方案
短句来源
    Combined with constructive practice of a project in Hebei Province,it discusses & researches water precipitation in basic pit according to geologic situations and introduces concrete constructive & safe measures by theoretical calculation of water gushing amount & parameters,which gets good effects.
    结合河北省某工地施工实践,根据土壤地质情况,对基坑降水进行探讨研究,通过涌水量及参数理论计算,介绍了具体的施工措施及安全保证措施,收到了良好的效果。
短句来源
  “降水”译为未确定词的双语例句
    Ground-Water-Lowering Construction in Hengshan Road Station of Shanghai No.1 Subway
    上海地铁一号线衡山路站的地下降水施工
短句来源
    Application of Optimization Method in Groundwater Drawdown Project for Deep Excavation
    最优化法在深基坑降水工程中的应用
短句来源
    Construction of Deep Well Point Dewater ing in Large Sand Filled Area
    填砂区大面积深井井点降水施工
短句来源
    Construstion Design and Technology of Drawdown and Anchored Slope Proteotion Pile Eegineering in Sunlight Plaza of Beijing City
    北京市阳光广场降水与锚拉护坡桩工程施工设计及工艺
短句来源
    On the Reducing Water Level Construction Method for Building Foundation
    建筑物基础降水施工方法实践
短句来源
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  precipitation
The water-soluble glucan was obtained from Pleurotus florida fruit bodies by hot water extraction, ethanol precipitation, DEAE cellulose dialysis and Sephadex G-75 gel filtration.
      
Preparation and characterization of nanocrystalline ZnO by direct precipitation method
      
Nanocrystalline ZnO was prepared with ZnCl2·2H2O and (NH4)2CO3 as raw materials by direct precipitation method.
      
The ion-exchanger LiAlTiO4 of spinel type was prepared by the common precipitation/hydrothermal crystallization method, and was acid-modified.
      
The precursors of Fe2O3-SiO2 mixed oxides prepared through co-precipitation method were modified by microwave hydrothermal treatment for the first time.
      
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  dewatering
The flocculating activity of polyelectrolytes is determined in aqueous kaolin suspensions and also in dewatering of an active sludge.
      
The annual average sludge production was 46.3 m3d-1, the annual average dosage for dewatering was 40 kg d-1.
      
Even when little saccharification occurred, the enzyme facilitated separation of water, fiber, and ash, so cellulase treatment could be an effective means for dewatering pulp sludges.
      
Dewatering of the released osmolyte would occur in two additional steps, consisting of its hydrolysis and the subsequent active uptake of its metabolites.
      
Dewatering and decontamination of artificially contaminated sediments during electrokinetic sedimentation and remediation proces
      
更多          
  water precipitation
Some of these features depend little on the cloud overlap assumption and may reveal inadequate parameterisation of the boundary layer mixing or the cloud water precipitation rate.
      
The different sources of fulvic acids in surface water (precipitation, runoff, interflow, groundwater) are the main reason for these effects not being detected in fulvic acids isolated from surface water.
      
The different sources of fulvic acids in surface water (precipitation, runoff, interflow, groundwater) are the main reason for these effects not being detected in fulvic acids isolated from surface water.
      


During earthquake, a high excess pore water pressure may be occurred in saturated sand due to an upward transmitting earthquake ware,which leads to cause loose sand into liquefaction. But there is no any measured data about the developing process of excess pore water pressure during earthquake until now. The authors recorded the developing process of excess pore water pressure around the loose sand by means of vibration from vibroflot at the period of construction and found the excess pore water pressure formed...

During earthquake, a high excess pore water pressure may be occurred in saturated sand due to an upward transmitting earthquake ware,which leads to cause loose sand into liquefaction. But there is no any measured data about the developing process of excess pore water pressure during earthquake until now. The authors recorded the developing process of excess pore water pressure around the loose sand by means of vibration from vibroflot at the period of construction and found the excess pore water pressure formed on such condition, as a shallow point vibrating source, consists of two parts fundamentally, pulse pore water pressure and strain pore water pressure. The pulse pore water pressure results from the vibrating P wave transmitted in the pore water and the P wave and S wave transmit outward through the soil skeleton, which produces strain potential on the skeleton of soil. The strain excess pore water pressure is a response of the residual strain potential coupled with the skeleton of soil. The rate between the above two parts are related to the distance from the shake center and to the density of sand. In level surface the field of excess pore water pressure is quite similar to the field of acceleration of ground.They all are the power-functions of distance to the shake center.

地震时,由于向上传播的地震波的作用,可能在饱和松砂中产生很高的超孔隙水压力,导致砂土发生液化。但至今还缺乏地震时土中超孔降水压力发生过程的实测资料。作者利用振动水冲器在施工过程所产生的振动,记录其周围饱和松砂中超孔隙水压力的产生过程,发现在这种振动条件——浅层点振源,形成的超孔隙水压力,基本上是由两部分组成的。即脉动孔隙水压力与应变孔隙水压力。脉动孔隙水压力是振动纵波在水中直接传播的结果。振动的纵、横波还通过土骨架向外传播,传播过程使土骨架产生应变势。应变超孔隙水压力是上耦合于骨架剩余应变势的反映。这两部分的比例与震中距及砂土密度有失。超孔隙水压力场与地面加速度场相似,基本上是震中距的幂函数.

The consolidation of soil under vacuum preloading was induced by reducing pore pressure on the boundary and thereby forming of unballanced distribution of pore pressure between the boundary and soil mass. With the good drainage condition on the boundary, the reduction of pore pressue certainly leads to the increase of effective stress and hence to the consolidation of soil even though the total stress is kept constant. The consolidation induced by vacuum preloading proceeds during the whole process from the...

The consolidation of soil under vacuum preloading was induced by reducing pore pressure on the boundary and thereby forming of unballanced distribution of pore pressure between the boundary and soil mass. With the good drainage condition on the boundary, the reduction of pore pressue certainly leads to the increase of effective stress and hence to the consolidation of soil even though the total stress is kept constant. The consolidation induced by vacuum preloading proceeds during the whole process from the unbalance of the distribution of pore pressure to a new balance. It was shown by test and theoretical analysis that the vaccum preloading method is different from surcharge preloading method in some aspects, such as the way of consolidation, the characteristics in the process of consolidation, stress path and the effect of drains. The only one common feature of these preloading methods is that the consolidation is induced by the unbalanced distribution of pore pressure and can be described with the differential equation of consolidation. Then a model for consolidation induced by surcharge and reducing pore pressure directly on the boundary was presented. At last, the effective stress analysis on several kinds of consolidation was carried out.

从讨论固结概念出发,得出真空预压法的实质。它是以降低边界上(砂垫层和砂井视为加固体的边界的一部分)u值为途径,从而形成边界与土体间u(势)分布不平衡而引起固结的。当边界具有排水条件时,在总应力基本不变的条件下,u值的降低必然导致有效应力σ'的增加。仅当σ'增加时,才能使土体固结。从u(势)分布的不平衡直到新的平衡之全过程即为真空预压加固过程。这是一种相对提高与发挥自重有效应力的加固方法。通过试验与理论分析说明,它与堆载预压法相比在固结产生的途径、固结过程中的特征、应力路径及砂井作用等方面有差异;而相同点则是两者的固结都来源于u(势)分布的不平衡且都满足于固结微分方程。同时,论证了渗流和固结并非因果关系以及它与降水预压的相似处及其差异;然后,提出了适用于施加外荷与直接降低边界u值两情况下的固结模型;最后,对几种固结情况进行了有效应力分析。

This paper aims at the improvement of the capacity of saturated sandy loam against liquefaction without drain after pile-driving.The effects of the content of clay-size parti- cles in soil,the grading of the soil,the precipitation and the pile-driving procedure on the capacity of the soil are analysized.The conclusion is that with proper grading and some specified pile-driving procedure,the capacity of the soil against liquefaction improves significantly

本文目的是探索饱和亚砂土层在不排水条件下,沉桩后,抗液化能力的改善效果。文章对土壤中粘粒含量,颗粒的级配,井点降水和打桩程序作了分析。结论是:适当的级配和规定打桩程序,土壤的抗液化能力就能有很明显的改善。

 
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