WO2013082906A1 - Procédé de contrôle de déformation de barrage en enrochement - Google Patents

Procédé de contrôle de déformation de barrage en enrochement Download PDF

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Publication number
WO2013082906A1
WO2013082906A1 PCT/CN2012/073969 CN2012073969W WO2013082906A1 WO 2013082906 A1 WO2013082906 A1 WO 2013082906A1 CN 2012073969 W CN2012073969 W CN 2012073969W WO 2013082906 A1 WO2013082906 A1 WO 2013082906A1
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WO
WIPO (PCT)
Prior art keywords
filling
grouting
dam
paste
cement mortar
Prior art date
Application number
PCT/CN2012/073969
Other languages
English (en)
Chinese (zh)
Inventor
谭界雄
卢建华
田波
高大水
余永志
熊威
严晶
Original Assignee
长江勘测规划设计研究有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 长江勘测规划设计研究有限责任公司 filed Critical 长江勘测规划设计研究有限责任公司
Publication of WO2013082906A1 publication Critical patent/WO2013082906A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02—Fixed barrages
    • E02B7/04—Dams across valleys
    • E02B7/06—Earth-fill dams; Rock-fill dams
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations

Definitions

  • the invention belongs to the technical field of water conservancy and hydropower engineering, and is a deformation control technology of rockfill dam, which can be applied to the deformation control of rockfill body of a dangerous rockfill dam or a water conservancy and hydropower project, and can also be used in the foundation or temporary cofferdam of some coarse aggregates. Used in strong permeable foundation deformation control.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a technique for improving the compactness of a rockfill dam and controlling the deformation of the rockfill dam.
  • the rockfill dam deformation control technology of the present invention comprises the following steps: 1 preparing a paste-like stable slurry and cement mortar: mixing cement, water, fly ash, clay, bentonite into a paste-like slurry, so that The plastic viscosity of the paste slurry is 0.15 ⁇ 0.25 Pa.s, its 28-day stone strength is greater than or equal to 5MPa, to be used for filling; cement, water, sand mixed into cement mortar, cement mortar plastic yield strength 40 ⁇ 41 Pa, plastic viscosity 0.6 ⁇ 0.65Pa.s, filled with filling and filling; 2 drilling: drilling in the dam body of the rockfill dam, the drilling includes a stable slurry grouting hole and filling filling hole for sealing;
  • step 2 the specific method of filling the borehole in the perfusion zone is to select a small-diameter diamond geological drill and a diamond core-breaking drill bit, and adjust the broken core cone of the drill bit into the reamer; Install the reamer at the joint of the drill pipe, lengthen the core pipe to 5.0m, and install the guide pipe every 10.0m; use the inclinometer to correct the hole in real time; fill the water and clay separately from the hole and the hole The water meter is installed on the inlet pipe of the orifice, and the state of the flushing liquid in the hole is monitored by the change of the water gauge pressure to ensure the cooling of the borehole.
  • step 3 the cement mortar in the perfusion zone is filled with an orifice.
  • the paste-like stable slurry and cement mortar grouting material prepared by the invention have the groutability and controllability, and the grouting material is evenly filled in the dam body, the cementing material has good stability and durability, and can effectively reduce the porosity of the rockfill dam. Make up for the filling quality defects of the original dam body, improve the deformation resistance of the dam body, and control the deformation of the dam body.
  • the paste-like stable slurry is used for pre-perfusion, and a closed area is formed around the rockfill dam perfusion area to prevent the slurry from being filled during the filling of the filling area, and the cement mortar is used for the filling and filling of the rockfill dam in the later stage, thereby effectively reducing the rockfill.
  • the porosity of the dam, and the cost of grouting materials is low.
  • the rockfill dam is drilled without drilling, not burning, the hole wall is stable, the drilling and rinsing fluid leakage is small, and the hole quality is high, the precision is high, the drill loss is small, the work efficiency is high, etc., the pile can be guaranteed
  • the quality of the hole in the deep inclined hole of the stone dam fundamentally controls the deformation of the dam. Filling the rockfill with cement mortar in the hole with the drill pipe can ensure the uniform mixing of the poured sand and the cement slurry, so that the mortar can be poured into the dam body continuously, stably and efficiently, and the cavity of the rockfill body is filled to ensure the quality of the perfusion.
  • the construction period is short.
  • FIG. 1 is a schematic view of a grouting borehole of a rockfill dam according to the present invention
  • 1 is a paste-like stable slurry grouting hole
  • 2 is a concrete panel
  • 3 is a cement mortar filling grouting hole
  • 4 is a grouting dam after grouting.
  • the rockfill dam deformation control construction method includes the following steps:
  • Fig. 1 Referring to Fig. 1, firstly paste the paste-like stable slurry into the two rows of holes around the filling perfusion area, that is, the paste-like stable slurry infusion hole, so that the paste-like stability slurry and the concrete panel 2 form a closed area to prevent the perfusion area.
  • the cement mortar filling grouting hole 3 is filled with cement mortar to fill the rockfill filling area.
  • the filling material reaches the design strength and can be controlled.
  • the rockfill dam 4 after grouting is deformed.
  • the invention improves the compactness of the rockfill dam and effectively controls the deformation of the dam body.
  • the grouting material of the prepared rockfill dam has the ability of filling and controllability, and the grouting material is evenly filled in the dam body.
  • the cement has good stability and durability, effectively reduces the porosity of the rockfill body, and makes up for the filling of the dam body. Construct quality defects, improve the resistance of the dam body to deformation, and control the deformation of the dam.
  • the drilling of the present invention mainly includes: diamond crushing core drilling technology, deep inclined hole correcting technology, rockfill body drilling cooling technology and the like.
  • rockfill dam When the rockfill dam is formed into a hole, it will not be stuck, not burned, the hole wall is stable, and the drilling and rinsing fluid leakage is less. It has the advantages of high hole quality, high precision, low loss of drilling tools and high work efficiency, which can ensure the deep slope of the rockfill dam.
  • the hole sand grouting filling technology is to fill and fill the rockfill body with the agitation of the drill pipe at the orifice, which can ensure the uniform mixing of the sand and the cement slurry, so that the mortar can be continuously, stably and efficiently filled into the hole, and filled.
  • the rockfill cavity can guarantee the quality of the perfusion and the construction period is short.
  • the rockfill dam of the reservoir is filled and grouted, and the grouting is filled uniformly.
  • the porosity of the rockfill dam after grouting is 22.8%, and the design value of the compressive strength of the cement is ⁇ 7.5 MP a (28d).
  • the deformation of the dam is 2 ⁇ 3mm when the high water level is running in the 20th and 201st flood seasons. When the water level is lowered, the deformation is reset and the deformation of the dam is effectively controlled.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

Cette invention concerne un procédé de contrôle de déformation de barrage en enrochement, comprenant les étapes consistant à : préparer un liquide de scellement pâteux et un mortier de ciment ; forer des trous dans le corps de barrage dudit barrage en enrochement, lesdits trous comprenant des trous de scellement par liquide de scellement stable pour le scellement, et des trous de scellement par remplissage ; et sceller, l'injection du liquide de scellement stable pâteux et une dalle de béton du côté amont du barrage en enrochement formant une région clôturée ; 14 jours après l'injection du liquide de scellement stable pâteux, injecter le mortier de ciment dans les trous de la région de scellement de façon à remplir les vides ; et 28 jours après le scellement de la région de scellement, contrôler la déformation du barrage à enrochement. Le procédé selon l'invention permet d'améliorer la résistance à la déformation du barrage à enrochement, de contrôler la déformation du corps de barrage et de garantir la qualité du scellement. Ledit procédé peut être appliqué à des barrages en enrochement défectueux ou pour contrôler la déformation d'un enrochement pour l'ingénierie des ressources d'eau et des aménagements hydroélectriques.
PCT/CN2012/073969 2011-12-07 2012-04-13 Procédé de contrôle de déformation de barrage en enrochement WO2013082906A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011104019978A CN102493403A (zh) 2011-12-07 2011-12-07 一种堆石坝变形控制技术
CN201110401997.8 2011-12-07

Publications (1)

Publication Number Publication Date
WO2013082906A1 true WO2013082906A1 (fr) 2013-06-13

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PCT/CN2012/073969 WO2013082906A1 (fr) 2011-12-07 2012-04-13 Procédé de contrôle de déformation de barrage en enrochement

Country Status (2)

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CN (1) CN102493403A (fr)
WO (1) WO2013082906A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104594370A (zh) * 2014-11-27 2015-05-06 中国电建集团贵阳勘测设计研究院有限公司 喀斯特地区高压联合冲洗灌浆方法及其结构
CN109384429A (zh) * 2018-09-20 2019-02-26 国家电网有限公司 一种抗冻防裂混凝土及其制备方法和应用

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CN104711956A (zh) * 2013-12-13 2015-06-17 天津市引滦工程尔王庄管理处 一种用于平原水库堤坝的除险加固方法
CN103741694B (zh) * 2013-12-25 2016-03-30 长江勘测规划设计研究有限责任公司 控制灌浆处理垂直型沥青混凝土心墙土石坝渗漏的方法
CN105350497B (zh) * 2015-11-26 2017-04-05 华北水利水电大学 钢面板坝自动调整变形装置
CN111119128B (zh) * 2019-11-21 2021-02-23 中电建十一局工程有限公司 一种堰塞湖天然堆石坝除险加固防渗方法
CN111217561A (zh) * 2020-02-27 2020-06-02 河海大学 一种用于筑坝的固化粉煤灰及其制备方法

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JP2001234167A (ja) * 2000-02-21 2001-08-28 Mitsubishi Materials Corp 超速硬型注入材およびこれを用いた注入工法
RU2233938C1 (ru) * 2003-03-24 2004-08-10 Российский Университет Дружбы Народов Способ омоноличивания бетонной гравитационной плотины на скальном основании
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RU2233938C1 (ru) * 2003-03-24 2004-08-10 Российский Университет Дружбы Народов Способ омоноличивания бетонной гравитационной плотины на скальном основании
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104594370A (zh) * 2014-11-27 2015-05-06 中国电建集团贵阳勘测设计研究院有限公司 喀斯特地区高压联合冲洗灌浆方法及其结构
CN109384429A (zh) * 2018-09-20 2019-02-26 国家电网有限公司 一种抗冻防裂混凝土及其制备方法和应用

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