Field test and analysis of vacuum pressure in vacuum drainage preloading

CEN Yang-run; YU Jian-lin; GONG Xiao-nan

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Field test and analysis of vacuum pressure in vacuum drainage preloading

更新时间：2026-06-25

- Field test and analysis of vacuum pressure in vacuum drainage preloading
- Vol. 24, Issue 4, (2003)
- 作者机构：
  
  浙江大学岩土工程研究所,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU41
- Online First：19 August 2014，
  
  Published：2003
- 稿件说明：
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CEN Yang-run, YU Jian-lin, GONG Xiao-nan. Field test and analysis of vacuum pressure in vacuum drainage preloading[J]. 2003, 24(4).
DOI：

CEN Yang-run, YU Jian-lin, GONG Xiao-nan. Field test and analysis of vacuum pressure in vacuum drainage preloading[J]. 2003, 24(4). DOI：

摘要

在分析真空和负压基本物理概念的基础上，总结了真空排水预压工程中真空度现场测试技术和应用现状。通过室内试验及工程实践证明，真空排水预压情况下，地下水位以上的软粘土仍是饱和的，因此，对地下水位以上真空度测点，真空表读数实际反映的是该处的孔隙水压力；而对地下水位以下的真空度测点，真空表读数无意义。

Abstract

Based on the analysis of basic physical concept of vacuum

the up-to-date in-situ measurement techniques and applications were summarized for the vacuum drainage preloading in construction engineering. The laboratory tests and engineering practices demonstrated that the soft clay above groundwater level was still under saturation even with vacuum drainage preloading. Therefore

when vacuum data were measured above groundwater level

the reading of vacuum gauge reflected the water pressure in pore void space

whereas if vacuum pressure measurement was located under groundwater level

the reading of vacuum gauge was meaningless.

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Related Author

TIAN Jun

LIU Zhong-yu

MA Chong-wu

MAO Zhi-xing

GONG Xiao-nan

YU Jian-lin

JIN Xiao-rong

CHEN Tian-fei2

Related Institution

Department of Civil Engineering, Dongguan University of Technology

School of Civil Engineering, Zhengzhou University

Zhejiang Provincial Electric Power Company

Key Laboratory of Groundwater Circulation and Evolution of Ministry of Education,China University of Geosciences

School of Water Resources and Environment, China University of Geosciences

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