土工基础

土工基础 ›› 2019, Vol. 33 ›› Issue (6): 704-708.

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泥浆的有效静液压力及在泥浆护壁中的作用

泥皮质量是防渗墙施工中泥浆护壁效果的关键，目前泥浆的配制主要依据工程类比经验，为了揭示泥皮质量与支撑槽壁的静液压力间的关系，研究了泥皮在防渗性能试验中的形成规律，建立了泥皮形成参数与槽壁稳定性之间关系式。研究表明，当泥皮有效护壁抗力强度达到 0.125 MPa，开挖速度小于0.5 m/h时，能有效保证卵石层成槽稳定性。   

  1. (1.中交武汉港湾工程设计研究院有限公司，武汉 430040；2.武汉理工大学土木工程与建筑学院，武汉 430070；3.中国电建集团铁路建设有限公司，北京 100080)
  • 收稿日期:2019-04-03 修回日期:2019-04-22 出版日期:2019-12-28 发布日期:2019-12-28
  • 通讯作者: 郭运华（1974-），男，讲师，博士研究生，研究方向为岩土工程方面的教学与研究。
  • 作者简介:郑万栋（1993-），男，硕士研究生， 研究方向为隧道与地下工程。

Effective Hydrostatic Pressure of Slurry and Its Role in Stabilizing the Slurry Wall Excavation

The quality of the mud cake is critical to the quality of the slurry wall construction for the seepage control. In current engineering practice, the preparation of slurry in the construction is mainly relied on the empirical method. In order to have a better understanding of the formation of mud cake in the slurry wall construction, parameters that resulting the formation of mud cake and the trench wall stability are related. The results indicated that when strength of the mud cake reaches 0.125 MPa and the trench excavation rate is less than 0.5 m/h, the stability of the cobble layer can be maintained during the excavation.   

  1. (1.CCCC Wuhan Harbor Engineering Design & Research Institute Co.,Ltd., Wuhan 430040;
    2.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070;
    2.China Power Construction Group Railway Construction Co., Ltd., Beijing 100080)
  • Received:2019-04-03 Revised:2019-04-22 Online:2019-12-28 Published:2019-12-28

摘要： 泥皮质量是防渗墙施工中泥浆护壁效果的关键，目前泥浆的配制主要依据工程类比经验，为了揭示泥皮质量与支撑槽壁的静液压力间的关系，研究了泥皮在防渗性能试验中的形成规律，建立了泥皮形成参数与槽壁稳定性之间关系式。研究表明，当泥皮有效护壁抗力强度达到 0.125 MPa，开挖速度小于0.5 m/h时，能有效保证卵石层成槽稳定性。

关键词: 泥浆护壁, 泥皮, 槽壁稳定, FLAC软件, 数值分析

Abstract: The quality of the mud cake is critical to the quality of the slurry wall construction for the seepage control. In current engineering practice, the preparation of slurry in the construction is mainly relied on the empirical method. In order to have a better understanding of the formation of mud cake in the slurry wall construction, parameters that resulting the formation of mud cake and the trench wall stability are related. The results indicated that when strength of the mud cake reaches 0.125 MPa and the trench excavation rate is less than 0.5 m/h, the stability of the cobble layer can be maintained during the excavation.

Key words: Slurry Method, Mud Cake, Trench Wall Stability, FLAC Software, Numerical Analysis

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