The process and mechanism of sand compaction are elucidated.
阐述了其实砂过程及实砂机理。
The main factors influencing sand compaction on EPC are vibration acceleration and negative pressure.
消失模铸造工艺影响干砂紧实的主要因素是振动加速度和负压度。
The test results showed that: two-step air impactmoulding process can achieve the moulds with high and uniform sand compaction;
前言：研究表明：双冲击造型可以大大提高砂型紧实度及其均匀性；
The paper presents an elementary introduction to the quality control process and point of installation of sand compaction piles in water.
简要介绍了水上挤密砂桩的施工质量控制流程和要点。
The vibroflotation sand compaction pile is an economical, reasonable ground treatment method, and it is recommended to use in this substation foundation.
推荐采用振冲挤密砂桩是较为经济合理的一种方法。
Combined with the construction practice, the paper introduced the principle, performance and design method of the liquefaction of vibrating sand compaction pile.
结合振动挤密碎石桩公路工程中的应用实例，介绍了振动挤密碎石桩抵抗砂土液化的原理、性能和设计方法。
Fort building is Wong, lime, fine sand mixing, layer by layer filling compaction, very strong.
炮台建筑采用黄泥、石灰、细砂拌和，逐层填筑夯实，非常坚固。
The dynamic pressure on pattern wall can reflect indirectly the compaction degree of sand during the course of filling and compaction of sand on EPC.
消失模铸造干砂充填紧实过程中，干砂对模型壁的动态压力可间接反映此处干砂的紧实程度。
The relationship between vibration parameters of compaction table and sand fluidity, filling and compaction for EPC was researched in this paper.
本文着重研究了实型铸造工艺中振动紧实台振动参数与砂体流动性、充填性及紧实度的特性关系。
In the paper, through the compaction test, the optimum moisture content and maximal dry density of aeolian sand are determined.
本文通过击实试验，确定了风积沙的最佳含水量和最大干密度。
Based on practical engineering examples and according to an analysis of the engineering properties of aeolian sand, the control points of aeolian sand dry compaction technology are defined.
结合工程实例在充分认识风积沙的工程特性基础上，通过分析风积沙工程特性，确定并进一步完善风积沙干压实工艺，明确了压实工艺控制要点。
The diameter of sand, content of plastic clastic and development of coal measures play a role in decreasing pore and development of protogenic pore between grains during diagenetic compaction.
砂岩粒径、塑性岩屑含量和煤系发育程度影响成岩压实减孔量，从而影响剩余原生粒间孔隙发育程度。
The formation of arch effects will bring the sand filling over the region of deep concavity hindered and the degree of compaction of molding sand at the deep concavity reduced.
它的形成会阻碍型砂向深凹区的填充，使得深凹处砂型紧实度降低。
The author with an engineering example, the main weakness of dynamic compaction of sand wick in dealing with soft clay and related issues a brief overview and analysis.
本文作者结合工程实例，主要对软弱地基强夯结合袋装砂井在处理饱和软黏土的相关问题进行了简要的综述和分析。
The dynamic stress inside green sand during experimental compaction by air impact moulding can be achieved using a method of placing aluminium plate at the top of green sand.
采用气冲造型机并在型砂顶部覆盖铝板的方法，获得了气力冲击造型试验紧实过程中型砂内部的动态应力。
Aimed at problems existed in testing degree of compaction of the subgrade filled by sand growel presented the modified formula of testing dry specific weight .
针对当前的砂砾填筑路基的压实度检测中存在的问题，提出了现场检测干容重的修正公式。
The charge weight, charge placement (in profile) and depth of charges are important factors in design of explosive compaction for saturated loose sand.
装药重量、装药形式、装药的深度是爆炸法密实饱和砂地基设计中比较敏感的设计参数。
A displacement sensor based on solenoid principle is used to measure green sand compactibility and mould compaction.
基于螺线管原理的位移探测器用于完成型砂紧实率及铸型紧实度的快速检测。
After vibration time gets to certain value, delaying vibration time again is of no service to more compaction of sand.
振动到达一定时间后，再延长振动时间无益于砂子的进一步紧实。
The fine siltstone reservoir is likely to produce sand under larger pressure drops because of its shallow depth, worse compaction and unconsolidated.
粉细砂岩油井由于埋藏浅、地层压实程度低、胶结疏松，在较大生产压差下容易出砂。
Sand fill and compaction are essential factors of Expendable Pattern Casting(EPC).
砂 的填充及紧实是实型造型工艺技术中的关键因素。
Shallow gas formations are of the characteristics of shallow burial depth, low compaction degree, unconsolidated cementation, easy sand producing etc.
浅气层具有埋藏浅、压实程度低、胶结疏松、生产时容易出砂的特点。
The compaction rate of the moulding sand is an essential index showing the sand moisture in casting practice.
型砂紧实率是反映铸型用砂含水量的一个重要指标。
The paper studies the roller compaction character of desert sand used for embankment material.
本文对沙漠砂作为填我土料所具有的碾压特性进行了研究。
At the present time, dynamic compaction used mainly in foundation treatment of sand, gravel and low saturation clay in order to improve the deep foundation.
目前强夯法主要用于处理加固砂土、碎石地基及低饱和度粘土地基。
The charge weight, charge placement(in profile) and depth of charges are important factors in design of Explosive Compaction for saturated loose sand.
沿处理深度方向上装药量、装药形式、装药深度是爆炸法密实砂土地基设计中比较敏感的设计参数。
In order to research the usability of low-energy dynamic compaction and non-filler vibro-flush for treating loose fine sand and their reinforcing effects, a serial of tests have been carried out.
结合某松细砂地基加固工程，对低能量强夯法和无填料振冲法处理松细砂地基的适用性及加固效果进行了试验研究，并对它们的适用范围、优缺点进行了比较分析。
Unlike the other road materials, aeolian sand had some compaction characteristics that were key factors of influence on construction qualities of highway in the desert.
风积沙是一种特殊的筑路材料，其压实特性是影响沙漠公路施工质量的重要因素。
The river deposit, which is made up of naturally graded sand and gravel, is characterized by its well gradation, easy control of its particle size, easy compaction and good permeability.
这种天然级配砂砾具有级配良好、粒径易控制、易碾压成型、透水性好等特点。
Considering the cost control and the time limit for the emergence, the technique of compaction grouting combine with sand-gravel cushion was chosen.
结合石家庄富强电力新村工程实际，从工程设计、施工、加固效果等方面阐述了换土法—级配砂石地基加固技术的应用。
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