EP0498786B1 - Méthode pour la limitation d'abaissement pendant le creusement des cavités souterraines - Google Patents

Méthode pour la limitation d'abaissement pendant le creusement des cavités souterraines Download PDF

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Publication number
EP0498786B1
EP0498786B1 EP92890013A EP92890013A EP0498786B1 EP 0498786 B1 EP0498786 B1 EP 0498786B1 EP 92890013 A EP92890013 A EP 92890013A EP 92890013 A EP92890013 A EP 92890013A EP 0498786 B1 EP0498786 B1 EP 0498786B1
Authority
EP
European Patent Office
Prior art keywords
areas
tunnel
volume
increase
excavation
Prior art date
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.)
Expired - Lifetime
Application number
EP92890013A
Other languages
German (de)
English (en)
Other versions
EP0498786A3 (en
EP0498786A2 (fr
Inventor
Helmut Dipl.Ing. Liebsch
Manfred Dipl.Ing Pöttinger
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.)
Liebsch Helmut Dipl-Ing
UNIVERSALE-BAU AG
Universale Bau AG
Original Assignee
Liebsch Helmut Dipl-Ing
UNIVERSALE-BAU AG
Universale Bau AG
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.)
Filing date
Publication date
Application filed by Liebsch Helmut Dipl-Ing, UNIVERSALE-BAU AG, Universale Bau AG filed Critical Liebsch Helmut Dipl-Ing
Publication of EP0498786A2 publication Critical patent/EP0498786A2/fr
Publication of EP0498786A3 publication Critical patent/EP0498786A3/de
Application granted granted Critical
Publication of EP0498786B1 publication Critical patent/EP0498786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling

Definitions

  • the invention relates to a method for limiting subsidence on the surface when producing an underground cavity, in particular a tunnel, by excavating material, such as loose rock, soil or the like.
  • the object of the present invention is therefore to provide a method for producing an underground, longitudinally extending cavity, in particular a tunnel, by means of which settlements or tangent inclinations of settlement depressions in the area of the terrain surface are limited to predetermined maximum values.
  • This is achieved according to the invention in that an elevation is brought about in the two lateral areas, the so-called elms, even before the cavity is produced, as a result of which a mountain supporting ring is formed due to stress redistribution. In this way, when the material for cavity production breaks out, subsidence is largely reduced or limited to predetermined maximum values.
  • the increases are preferably brought about by volume increases in elm areas. This can be done by material injection or by high-pressure floor mortar. Alternatively, slots can be milled in the two elm areas, which are subsequently pressed out.
  • the elevation in elm areas is brought about by pretensioning the same in relation to the surface, e.g. by micropiles with foot extension.
  • the planned tunnel 2 is shown below the surface 1, which is subsequently braced by a lining 3.
  • the so-called elms during the excavation of the material, in particular loose rock or soil Outbreak of the material in the areas of the elms 4 increases, which are caused in particular by volume increases 5.
  • a mountain support ring 6 is formed around the future tunnel 2 by means of tension bearings, which is shown schematically.
  • the voids in the floor which are formed in loose floors, by pores, cracks, crevices or fissures, are completely or partially filled with injection material.
  • the material to be injected is introduced into the ground through boreholes in such a way that it largely fills the air or groundwater contained in the cavities, displacing them. This leads to an improvement in the soil properties. By continuing the soil injection and the associated blasting, an increase in volume is achieved in these areas, which leads to the desired stress redistribution.
  • the loose rock is cut out of a water jet or a water / air mixture after a hole has been drilled and released.
  • the loosened soil is mixed with a suspension of cement or bentonite cement in such a way that a homogeneous floor mortar in column or disc form is formed after setting.
  • the soil is also partially replaced by the suspension material, with a backflow via the borehole. Since the cutting jet works at very high pressure, by regulating the pressure level of the return flow through the borehole, lifts can be generated, which likewise causes the desired stress redistribution.
  • slots are made into which the pressed material can be introduced, whereby the desired increase in volume is achieved.
  • FIG. 2 shows the elevation or settlement of the terrain surface during the implementation of the method according to the invention.
  • the first period during which holes or slots are made in the elm areas, there is a slight settlement.
  • the soil is raised in the area of influence of the volume increase.
  • the formation of the desired supporting arch is achieved when there is a direct connection between volume increase and uplift. After the process for lifting the material in the elm areas has ended, additional deposits can occur, which, however, are minor in comparison to the lifting of the soil.
  • FIG. 3 of the drawing illustrates the method according to the invention for producing a longitudinal tunnel 10 and a transverse tunnel 11.
  • deformations are caused in particular in the lateral areas of the connection of the two tunnels 10 and 11.
  • 13 increases are made in these two areas in particular, which are brought about in particular by increasing the volume, as a result of which a mountain support ring 14 is formed over these areas, by means of which settling to predetermined dimensions 15 during and after the outbreak of the material is restricted.
  • the terrain elevations required for the formation of the mountain support ring are shown in the form of isohypses 12.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (5)

  1. Procédé destiné à limiter les tassements de surface (1) lors de la réalisation d'une cavité souterraine, allongée, en particulier d'un tunnel (2, 11, 12), par abattage de matériaux, tels que des roches fracturées, de la terre ou similaires, caractérisé en ce que dès avant l'abattage des matériaux il est formé, par des déplacements de tension, un anneau de support de la couverture (6, 14), et ce grâce au fait que dans les deux zones latérales de la cavité (2, 11, 12) à créer, ou parois de tunnel (4), on provoque des surélévations de matériaux, par exemple par une augmentation de volume.
  2. Procédé selon la revendication 1, caractérisé en ce que l'augmentation de volume (5, 13) est réalisée dans les zones (4), en ce que des matériaux sont injectés dans celles-ci.
  3. Procédé selon la revendication 1, caractérisé en ce que l'augmentation de volume (5, 13) dans les zones (4) est provoquée en ce qu'il est réalisé une stabilisation du sol sous haute pression.
  4. Procédé selon la revendication 1, caractérisé en ce que l'augmentation de volume (5, 13) dans les zones (4) est réalisée en ce que dans celles-ci sont fraisées des fentes qui sont ensuite remplies par injection.
  5. Procédé selon la revendication 1, caractérisé en ce que les surélévations dans les zones (4) sont provoqués par une précontrainte de celles-ci par rapport à la surface (1), par example par des micropieux avec élargissement des pieds.
EP92890013A 1991-02-05 1992-01-16 Méthode pour la limitation d'abaissement pendant le creusement des cavités souterraines Expired - Lifetime EP0498786B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT240/91 1991-02-05
AT24091 1991-02-05

Publications (3)

Publication Number Publication Date
EP0498786A2 EP0498786A2 (fr) 1992-08-12
EP0498786A3 EP0498786A3 (en) 1993-03-31
EP0498786B1 true EP0498786B1 (fr) 1994-12-07

Family

ID=3485280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92890013A Expired - Lifetime EP0498786B1 (fr) 1991-02-05 1992-01-16 Méthode pour la limitation d'abaissement pendant le creusement des cavités souterraines

Country Status (3)

Country Link
EP (1) EP0498786B1 (fr)
AT (1) ATE115233T1 (fr)
DE (1) DE59200866D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110552717A (zh) * 2019-05-27 2019-12-10 中铁十八局集团第四工程有限公司 砂卵石地层盾构隧道地表分层差异沉降空间注浆减沉方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111980716A (zh) * 2020-08-27 2020-11-24 中铁十五局集团有限公司 一种预测并行隧道非同步掘进引起土体沉降的计算方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR322858A (fr) * 1902-07-07 1903-02-17 Berlier Jean Baptiste Procédé pour la construction de galeries souterraines dans des terrains fissurés et perméables
GB1304878A (fr) * 1969-12-22 1973-01-31
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110552717A (zh) * 2019-05-27 2019-12-10 中铁十八局集团第四工程有限公司 砂卵石地层盾构隧道地表分层差异沉降空间注浆减沉方法

Also Published As

Publication number Publication date
DE59200866D1 (de) 1995-01-19
EP0498786A3 (en) 1993-03-31
EP0498786A2 (fr) 1992-08-12
ATE115233T1 (de) 1994-12-15

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