[1]汤连生,卢威,曹一飞,等.勾拌法密封墙施工的力学分析[J].水文地质工程地质,2018,45(04):121.[doi:10.16030/j.cnki.issn.1000-3665.2018.04.18]
 TANG Liansheng,LU Wei,CAO Yifei,et al.A mechanical analysis of the construction technology of sealing wall with the lading and stirring method[J].Hydrogeology & Engineering Geology,2018,45(04):121.[doi:10.16030/j.cnki.issn.1000-3665.2018.04.18]
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勾拌法密封墙施工的力学分析()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
45卷
期数:
2018年04期
页码:
121
栏目:
工 程 地 质
出版日期:
2018-07-15

文章信息/Info

Title:
A mechanical analysis of the construction technology of sealing wall with the lading and stirring method
文章编号:
1000-3665(2018)04-0121-08
作者:
汤连生12卢威1曹一飞1于海涛3
1.中山大学地球科学与工程学院,广东 广州510275;2.广东省地质过程与矿产资源探查重点实验室,广东 广州510275;3. 广东省建筑科学研究院集团股份有限公司,广东 广州510000
Author(s):
TANG Liansheng12 LU Wei1CAO Yifei1YU Haitao3
1.School of Earth Sciences and Geological Engineering, Sun Yat-Sen University, Guangzhou, Guangdong510275, China; 2. Guangdong Province Key Laboratory of Geological Processes and Mineral Resources, Guangzhou, Guangdong510275, China; 3.Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou, Guangdong510000, China
关键词:
真空预压密封墙勾拌勾拌法槽壁稳定性
Keywords:
vacuum preloading sealing wall hook and mix TLS(Technology of Lading and Stirring method) stability of trenches sealing wall
分类号:
TU447;TU476
DOI:
10.16030/j.cnki.issn.1000-3665.2018.04.18
文献标志码:
A
摘要:
基于新型密封墙施工技术勾拌法原理的阐述,适用于施工区域存在上部土层主要为中粗砂、砾石层且夹有大量巨大石块的地层情况,传统的施工工艺难以有效地构建地下密封墙的难点,分析了勾拌法形成密封墙行之有效的施工机制。文中针对开挖槽壁三种不同破坏滑动面的情况,对勾拌法施工过程中开挖槽壁的稳定性进行了力学分析,得到了三种潜在破坏面情况下槽壁稳定系数的计算公式。在施工过程中如果槽壁出现破坏,则可根据公式计算出保持槽壁安全稳定的泥浆重度,通过调控泥浆重度使槽壁保持稳定,为勾拌法安全有效的施工提供指导。最后,结合澳门国际机场南停机坪扩建工程的工程实例,根据真空度的历时实测结果分析,表明采取勾拌法密封墙施工技术密封效果良好,解决了搅拌法或静压注浆法实际操作中难以解决的问题,取得了好的技术指标和经济效益,具有推广价值。
Abstract:
The principle of the new construction technology of sealing wall is introduced, which is applicable for the ground conditions which are mainly for the coarse sand and gravel layer with a large number of huge stones existing in the upper soil layer of construction areas, and which is easier than the traditional construction technology to effectively build underground sealing wall. The effective mechanism of TLS(Technology of Lading and Stirring method) to construct sealing wall is also analyzed. Aiming at the three different damage situation of the slip plane of the excavated wall, the essay checks the stability of the excavated wall during the excavation of the TLS for the mechanics analysis, and obtains the calculating formula of safety factor under three conditions is obtained. In the process of construction, if the groove wall is damaged, we can calculate the mud weight that keeps the safety and stability of the groove wall, and it also provides a guide for the safe and effective construction of TLS. Finally, combined with the project of the Macau international airport south apron expansion project instance, based on the measured results of vacuum degree analysis, the article shows that the sealing effect is good by using TLS, which has also solved the problem that other construction technology cannot be implemented in this project, which has obtained better technical indexes and economic benefit. The technology is worthy of popularizing. This article analyzes TLS from the point of view of mechanics, and will provide scientific guidance for TLS. It is of theoretical significance and practical significance.

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相似文献/References:

[1]雷鸣,王星华,唐依民,等.基于孔压实测资料的真空预压机理及沉降计算探讨[J].水文地质工程地质,2010,37(6):81.
 LEI Ming,WANG Xin-hua,TANG Yi-min.Discussion of the mechanism of vacuum preloading and settlement calculation based on measured values of pore water pressure[J].Hydrogeology & Engineering Geology,2010,37(04):81.

备注/Memo

备注/Memo:
收稿日期: 2017-12-06; 修订日期: 2018-03-16
基金项目: 广东省自然科学基金项目(2015A030313118)
第一作者: 汤连生(1963-),男,教授,博导,主要从事地质工程、岩土工程及岩土化学力学等方面的教学与科研工作。E-mail:eestls@mail.sysu.edu.cn
更新日期/Last Update: 2018-07-15