EP1757771A2 - Verfahren zur Konsolidierung und Wasserabdichtung des Bodens um einen Tunnel - Google Patents

Verfahren zur Konsolidierung und Wasserabdichtung des Bodens um einen Tunnel Download PDF

Info

Publication number: EP1757771A2
Authority: EP; European Patent Office
Prior art keywords: blocks; infill; forming; primary; diameter
Prior art date: 2005-08-23
Legal status (The legal status 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 status listed.): Granted

Application number

EP06119250A

Other languages

English (en)

French (fr)

Other versions

EP1757771B1 (de

EP1757771A3 (de

Inventor

Stefano Trevisani

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Trevi SpA

Original Assignee

Trevi SpA

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.)

2005-08-23

Filing date

2006-08-21

Publication date

2007-02-28

2006-08-21 Application filed by Trevi SpA filed Critical Trevi SpA

2007-02-28 Publication of EP1757771A2 publication Critical patent/EP1757771A2/de

2007-10-24 Publication of EP1757771A3 publication Critical patent/EP1757771A3/de

2010-04-21 Application granted granted Critical

2010-04-21 Publication of EP1757771B1 publication Critical patent/EP1757771B1/de

2026-08-21 Anticipated expiration legal-status Critical

Status Active legal-status Critical Current

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Classifications

- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections

Definitions

This invention relates to a method for consolidating and impermeabilizing a portion of ground around a tunnel which has to be excavated beneath the level of a water table.
the object of this invention is to provide a method for creating a tubular shell structure of artificial conglomerate which extends continuously around the ground which has to be excavated in order to construct a tunnel beneath a water table.
it is intended to provide a stable and leakproof structure regardless of any inhomogeneities in the ground and the inevitable deviations from the vertical occurring in the columnar formations formed by jet grouting techniques.
G diagrammatically indicates the ideal transverse cross-section of a substantially tubular shell of consolidated and sealed ground which it is desired to construct around a portion of ground T in which a tunnel is to be excavated.
the portion of ground T lies beneath the level of the water table W and comprises a type of ground which is suitable for the construction of cylindrical columns of consolidated ground using jet grouting techniques. Jet grouting equipment and procedures are well known in the field of soil mechanics. As a consequence only items of specific importance and interest for the purpose of implementing the invention will be described in the remainder of this description. In respect of the parts and elements not illustrated in detail reference may therefore be made to any jet grouting system of a known type.
a first series of blocks of artificial conglomerate 10, 11 arranged in an annular geometrical arrangement in a transverse vertical plane are formed around ground portion T.
These blocks which are hereinafter referred to as primary blocks, are vertical columnar members of limited height, spaced apart from each other around the ground portion T and vertically aligned in pairs.
a second set of infill blocks 20, 21 of artificial conglomerate which firmly join together the primary blocks previously formed is formed using a jet grouting technique ( Figure 4).
Figure 4 a jet grouting technique
Infill blocks 20, 21 each form a radially outer portion 22 which extends transversely between two consecutive primary blocks in such a way as to partly cover lower surfaces 13, 14 of two consecutive primary blocks in the lower arch and the upper surfaces 15, 16 of two consecutive primary blocks of the upper arch ( Figure 6).
Diameter D2 of the outer portions 22 of the infill blocks is preferably equal to the diameter D1 of the primary blocks incremented by approximately twice the maximum expected deviation in drilling through which the blocks are obtained.
Diameter D2 of the outer portions 22 is greater than that of the intermediate part 24 between two primary blocks. This increase in diameter is obtained by slowing the rising movement of the shaft (not illustrated) bearing the injection nozzles for the cementitious mixture.
each infill or secondary block performs a sealing action between the two primary blocks against which it is formed.
the lithostatic and hydrostatic pressure acting on outer surface 23 of an infill block is transferred to the outer surfaces 13-16 of the primary blocks, thus reducing permeability along the contact surfaces between the primary blocks and the infill blocks.
the pressure of the injected cementitious mixture may carry bodies such as blocks, masses, wood, lignite, coal deposits, etc., to the periphery of the primary blocks.
bodies of this kind might give rise to preferential routes for the passage of water. However these passages are stopped up externally by the outer portions 22 of the infill blocks. It should also be noted that some degree of amalgamation and intimate combination between the primary blocks and the infill or secondary blocks is obtained whenever the infill blocks are made when the primary blocks have not yet completely hardened.
injection of the cementitious mixture may be preceded by a stage of jetting, optionally with the simultaneous injection of pressurised air, to break up the ground and remove the finest particles in preparation for subsequent injection of the cementitious mixture or grout.

Landscapes

Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Mining & Mineral Resources (AREA)
Environmental & Geological Engineering (AREA)
Soil Sciences (AREA)
Structural Engineering (AREA)
General Life Sciences & Earth Sciences (AREA)
Paleontology (AREA)
Agronomy & Crop Science (AREA)
Civil Engineering (AREA)
General Engineering & Computer Science (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Excavating Of Shafts Or Tunnels (AREA)
Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Road Paving Structures (AREA)
Housing For Livestock And Birds (AREA)

EP06119250A 2005-08-23 2006-08-21 Verfahren zur Konsolidierung und Wasserabdichtung des Bodens um einen Tunnel Active EP1757771B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT000586A ITTO20050586A1 (it)	2005-08-23	2005-08-23	Procedimento per consolidare ed impermeabilizzare il terreno attorno ad una galleria da scavare sotto una falda acquifera

Publications (3)

Publication Number	Publication Date
EP1757771A2 true EP1757771A2 (de)	2007-02-28
EP1757771A3 EP1757771A3 (de)	2007-10-24
EP1757771B1 EP1757771B1 (de)	2010-04-21

Family

ID=37430802

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP06119250A Active EP1757771B1 (de)	2005-08-23	2006-08-21	Verfahren zur Konsolidierung und Wasserabdichtung des Bodens um einen Tunnel

Country Status (4)

Country	Link
EP (1)	EP1757771B1 (de)
AT (1)	ATE465324T1 (de)
DE (1)	DE602006013757D1 (de)
IT (1)	ITTO20050586A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102010036901A1 (de) *	2010-08-06	2012-02-09	Universale Grund- Und Sonderbau Gmbh	Düsenstrahlsohle
CN106351215A (zh) *	2016-10-12	2017-01-25	青海省公路建设管理局	一种风积沙隧道洞口拱型门框式旋喷桩支护的方法
CN106930769A (zh) *	2017-05-07	2017-07-07	中铁十八局集团有限公司	一种用于大孔隙率巨型岩堆松散体中特定区域定向定位注浆加固方法
CN107013231A (zh) *	2017-05-07	2017-08-04	中铁十八局集团有限公司	一种用于大孔隙率巨型岩堆松散体中控注浆加固范围的施工方法
CN111236951A (zh) *	2020-02-22	2020-06-05	中铁十九局集团第六工程有限公司	风积砂地层隧道洞口段咬合桩加固方法
CN112031706A (zh) *	2020-08-20	2020-12-04	北京大地高科地质勘查有限公司	一种水平井裂隙封堵的高效注浆设备
CN112982371A (zh) *	2021-02-08	2021-06-18	中国电建集团北京勘测设计研究院有限公司	一种大型地下洞室采用超前灌浆封闭的防渗方法
JP2024073143A (ja) *	2022-11-17	2024-05-29	鹿島建設株式会社	シールドトンネルの施工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH10205274A (ja)	1997-01-20	1998-08-04	Maeda Corp	先進導坑からのトンネル地山先行補強工法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS56115415A (en) *	1980-02-19	1981-09-10	Hazama Gumi Ltd	Improvement method for subsoil
US4370077A (en) *	1980-08-04	1983-01-25	Colgate Stirling A	Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength
DE19617196C1 (de) *	1996-04-29	1997-06-26	Carbotech Berg Tunnelbausyst	Verfahren zur Injektion von schnellreagierenden Zweikomponentensystemen, insbesondere Polyurethansystemen, zum Abdichten oder Verfestigen von Gebirge oder Erdreich sowie Vorrichtung zur Durchführung des Verfahrens
CA2315468A1 (en) *	2000-08-10	2002-02-10	Thermax International Corp.	Multi grouting system
BE1015173A5 (nl) *	2002-11-06	2004-10-05	Chiaverotti Bvba	Werkwijze voor het bouwen van een beschoeiing.

2005
- 2005-08-23 IT IT000586A patent/ITTO20050586A1/it unknown
2006
- 2006-08-21 DE DE602006013757T patent/DE602006013757D1/de active Active
- 2006-08-21 EP EP06119250A patent/EP1757771B1/de active Active
- 2006-08-21 AT AT06119250T patent/ATE465324T1/de active

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH10205274A (ja)	1997-01-20	1998-08-04	Maeda Corp	先進導坑からのトンネル地山先行補強工法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102010036901A1 (de) *	2010-08-06	2012-02-09	Universale Grund- Und Sonderbau Gmbh	Düsenstrahlsohle
CN106351215A (zh) *	2016-10-12	2017-01-25	青海省公路建设管理局	一种风积沙隧道洞口拱型门框式旋喷桩支护的方法
CN106930769A (zh) *	2017-05-07	2017-07-07	中铁十八局集团有限公司	一种用于大孔隙率巨型岩堆松散体中特定区域定向定位注浆加固方法
CN107013231A (zh) *	2017-05-07	2017-08-04	中铁十八局集团有限公司	一种用于大孔隙率巨型岩堆松散体中控注浆加固范围的施工方法
CN111236951A (zh) *	2020-02-22	2020-06-05	中铁十九局集团第六工程有限公司	风积砂地层隧道洞口段咬合桩加固方法
CN112031706A (zh) *	2020-08-20	2020-12-04	北京大地高科地质勘查有限公司	一种水平井裂隙封堵的高效注浆设备
CN112031706B (zh) *	2020-08-20	2022-04-29	北京大地高科地质勘查有限公司	一种水平井裂隙封堵的高效注浆设备
CN112982371A (zh) *	2021-02-08	2021-06-18	中国电建集团北京勘测设计研究院有限公司	一种大型地下洞室采用超前灌浆封闭的防渗方法
JP2024073143A (ja) *	2022-11-17	2024-05-29	鹿島建設株式会社	シールドトンネルの施工方法

Also Published As

Publication number	Publication date
ITTO20050586A1 (it)	2007-02-24
ATE465324T1 (de)	2010-05-15
EP1757771B1 (de)	2010-04-21
EP1757771A3 (de)	2007-10-24
DE602006013757D1 (de)	2010-06-02

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