1) vacuum well point dropping heaped combined pre compression
真空井点降水堆载联合预压
1.
The practice proves that even if the stage of the construction is not so sufficient, provided the application is proper, the heaped pre compression method and vacuum well point dropping heaped combined pre compression method can effectively redu.
本文结合实际工程论述了堆载预压法和真空井点降水堆载联合预压法加固软土地基的设计、施工技术与经验。
2) the combined preloading of vacuum dewatering and loading
真空降水堆载联合预压
1.
From the view of stress path, authors discuss the mechanism on improving deep soft ground of freeway bridge embankment by the combined preloading of vacuum dewatering and loading.
从应力路径的观点 ,探讨了真空降水堆载联合预压法加固高速公路桥坡深厚软弱地基的加固机理 ;从简单、实用的角度 ,提出了该法的沉降计算方法和设计原理 ;并结合实际工程 ,分析了该法对加速地基土在施工期间的固结过程、减少工后沉降和减缓桥坡纵坡变化率的作用和贡
3) vacuum-surcharge preloading
真空-堆载联合预压
1.
The application of vacuum-surcharge preloading in foundation treatment for electric power plant;
真空-堆载联合预压法在电厂地基处理中的应用实例
2.
To prove its efficiency,a test on situ also conduced with vacuum-surcharge preloading saturated soil treatment.
真空-堆载联合预压处理深厚饱和软土地基时分层沉降测试现场实践表明,该监测技术精度较高而且较为稳定,具有较好的应用前景。
3.
Based on the field experiment and research work carried out in the Ri Zhao dock in Shan Dong province,the mechanism of improvement of soft subgrade with the vacuum-surcharge preloading method is discussed.
结合山东日照港集装箱码头辅建区的软基处理工程,开展了现场真空-堆载联合预压试验和监测资料分析研究,并对其加固机理和加固效果进行了探讨。
4) combined vacuum and surcharge preloading
真空联合堆载预压
1.
Boundary effect of the method combined vacuum and surcharge preloading and influencing factors thereof;
真空联合堆载预压法的边界效应及其影响因素
2.
Assessment of effect of ground improvement for hydraulic structure using combined vacuum and surcharge preloading;
真空联合堆载预压法加固水工建筑物软基效果检验
5) vacuum combined with surcharge preloading
真空-堆载联合预压
1.
Simplified nonlinear analysis of subsoil improved by vacuum combined with surcharge preloading;
真空-堆载联合预压加固地基简化非线性分析
6) vacuum combined surcharge preloading
真空联合堆载预压
1.
Considering the special engineering geology condition of soft soil foundation in Qingdao seashore expressway,vacuum preloading、surcharge preloading、vacuum combined surcharge preloading and dynamic compacted stone pier are adopted to strengthening soft soil foundation.
针对青岛滨海公路施工现场特殊的工程地质条件,分别采用真空预压、堆载预压、真空联合堆载预压、强夯片石墩等软基加固法加固软土地基。
2.
Vacuum preloading and Vacuum combined Surcharge preloading are effective methods to improve soft foundation.
真空预压法及真空联合堆载预压法作为一种软土地基处理方法,具有诸多优点。
补充资料：井点降水法
井点降水法
lowering the water table by well point
Ji叩d仰J心戊笋浏fo井点降水法(lowering the water table by we-n一point)预先将井筒穿过的含水层通过用钻孔进行疏干，然后掘进井筒的施工技术。在不稳定的含水岩层中开凿井筒时，在预定的井筒周围凿出钻孔，利用钻孔抽水或往下放水，使地下水位降落，疏干含水层。然后，在疏干区内进行井筒掘砌作业。井点降低地下水位的方法有抽水法和放水法.前者利用深井泵或潜水泵从井筒周围钻孔中抽水，使水位降低，形成疏干区。(见图)后者在井筒断面内凿出钻孔(滤水孔)，使地下水经滤水孔流人下部已开凿的巷道内，再转排至地面。抓 井点降水示意图 1一井筒;2一抽水孔.3一地下原有静水位， 4一深井泵.5一抽水时静水位 钻孔抽水法是在比井筒掘进直径大4m的布孔圈径上钻3~6个直径为100~500mm的钻孔，其深度以进人不透水层中2~4m为宜。随着钻凿孔的进行在钻孔中安设好保孔管，保孔管上钻有直径为5~15mm的小孔，包扎好金属过滤网，以防止砂粒进人撼管内磨损水泵或使孔壁坍塌.钻孔抽水时，孔内的水位急剧降低，形成水位最低点.外部围岩中的水，因存在水位差而流向孔内，水位降低较大，而远离钻孔的水流阻力则增大，因此水位降低较小，从而形成降水漏斗，满足了疏干要求。 矿井降水孔的涌水量多为30~loom，/h，主要含水层的水位降低值可达几十米。当含水岩层渗透系数大于3m/d时，井点降水法较为有效。井点降水法通常不能使水位降低到含水层的最低深度处，在隔水层上部有一段井筒的水没有被疏干称为残余水柱。必要时需要采取其他措施(如板桩法)来保证该段井筒的掘砌施工。 井点降低水位可使土体密实，引起结构上的土压力增高和地面下沉，应注意防止不均匀沉降。当含水砂层厚度不大、粘土夹层不超过两层，有良好渗透性时，宜采用钻孔抽水法。 (张著超)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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